/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-nondet/nondet-loop-bound-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-11 15:57:49,217 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-11 15:57:49,226 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-11 15:57:49,265 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-11 15:57:49,265 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-11 15:57:49,274 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-11 15:57:49,275 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-11 15:57:49,279 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-11 15:57:49,281 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-11 15:57:49,282 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-11 15:57:49,285 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-11 15:57:49,287 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-11 15:57:49,287 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-11 15:57:49,290 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-11 15:57:49,292 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-11 15:57:49,294 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-11 15:57:49,296 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-11 15:57:49,298 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-11 15:57:49,299 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-11 15:57:49,303 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-11 15:57:49,304 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-11 15:57:49,307 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-11 15:57:49,309 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-11 15:57:49,309 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-11 15:57:49,314 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-11 15:57:49,332 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-11 15:57:49,334 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-11 15:57:49,334 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-11 15:57:49,336 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-11 15:57:49,375 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-11 15:57:49,375 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-11 15:57:49,377 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-11 15:57:49,377 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-11 15:57:49,377 INFO L138 SettingsManager]: * Use SBE=true [2020-10-11 15:57:49,378 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-11 15:57:49,378 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-11 15:57:49,378 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-11 15:57:49,378 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-11 15:57:49,378 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-11 15:57:49,379 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-11 15:57:49,379 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-11 15:57:49,380 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-11 15:57:49,380 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-11 15:57:49,380 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-11 15:57:49,380 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-11 15:57:49,381 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-11 15:57:49,381 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-11 15:57:49,381 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-11 15:57:49,381 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-11 15:57:49,381 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-11 15:57:49,381 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 15:57:49,382 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-11 15:57:49,382 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-11 15:57:49,382 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-11 15:57:49,382 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-11 15:57:49,382 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-11 15:57:49,383 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-11 15:57:49,383 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-11 15:57:49,383 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-11 15:57:49,687 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-11 15:57:49,700 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-11 15:57:49,703 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-11 15:57:49,705 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-11 15:57:49,705 INFO L275 PluginConnector]: CDTParser initialized [2020-10-11 15:57:49,706 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-nondet/nondet-loop-bound-1.i [2020-10-11 15:57:49,767 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a9635428/fb5b3a6eb7084d25adddf0887a7b7c4b/FLAG56babed76 [2020-10-11 15:57:50,296 INFO L306 CDTParser]: Found 1 translation units. [2020-10-11 15:57:50,296 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-nondet/nondet-loop-bound-1.i [2020-10-11 15:57:50,311 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a9635428/fb5b3a6eb7084d25adddf0887a7b7c4b/FLAG56babed76 [2020-10-11 15:57:50,546 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a9635428/fb5b3a6eb7084d25adddf0887a7b7c4b [2020-10-11 15:57:50,555 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-11 15:57:50,557 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-11 15:57:50,558 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-11 15:57:50,558 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-11 15:57:50,561 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-11 15:57:50,562 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 03:57:50" (1/1) ... [2020-10-11 15:57:50,565 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1134c48f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:57:50, skipping insertion in model container [2020-10-11 15:57:50,566 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 03:57:50" (1/1) ... [2020-10-11 15:57:50,573 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-11 15:57:50,623 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-11 15:57:51,167 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 15:57:51,178 INFO L203 MainTranslator]: Completed pre-run [2020-10-11 15:57:51,247 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 15:57:51,313 INFO L208 MainTranslator]: Completed translation [2020-10-11 15:57:51,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:57:51 WrapperNode [2020-10-11 15:57:51,313 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-11 15:57:51,314 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-11 15:57:51,314 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-11 15:57:51,315 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-11 15:57:51,323 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:57:51" (1/1) ... [2020-10-11 15:57:51,339 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:57:51" (1/1) ... [2020-10-11 15:57:51,363 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-11 15:57:51,363 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-11 15:57:51,363 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-11 15:57:51,363 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-11 15:57:51,373 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:57:51" (1/1) ... [2020-10-11 15:57:51,373 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:57:51" (1/1) ... [2020-10-11 15:57:51,376 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:57:51" (1/1) ... [2020-10-11 15:57:51,376 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:57:51" (1/1) ... [2020-10-11 15:57:51,382 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:57:51" (1/1) ... [2020-10-11 15:57:51,386 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:57:51" (1/1) ... [2020-10-11 15:57:51,388 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:57:51" (1/1) ... [2020-10-11 15:57:51,391 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-11 15:57:51,392 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-11 15:57:51,392 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-11 15:57:51,392 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-11 15:57:51,393 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:57:51" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 15:57:51,449 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-10-11 15:57:51,450 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-10-11 15:57:51,450 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-11 15:57:51,450 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-11 15:57:51,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-11 15:57:51,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-11 15:57:51,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-11 15:57:51,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-11 15:57:51,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-11 15:57:51,452 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-11 15:57:51,800 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-11 15:57:51,801 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-11 15:57:51,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 03:57:51 BoogieIcfgContainer [2020-10-11 15:57:51,803 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-11 15:57:51,804 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-11 15:57:51,804 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-11 15:57:51,807 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-11 15:57:51,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 03:57:50" (1/3) ... [2020-10-11 15:57:51,808 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@556d66fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 03:57:51, skipping insertion in model container [2020-10-11 15:57:51,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:57:51" (2/3) ... [2020-10-11 15:57:51,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@556d66fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 03:57:51, skipping insertion in model container [2020-10-11 15:57:51,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 03:57:51" (3/3) ... [2020-10-11 15:57:51,811 INFO L111 eAbstractionObserver]: Analyzing ICFG nondet-loop-bound-1.i [2020-10-11 15:57:51,822 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-11 15:57:51,822 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-11 15:57:51,829 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-11 15:57:51,831 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-11 15:57:51,854 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:51,855 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:51,855 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:51,855 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:51,856 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:51,856 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:51,856 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:51,857 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:51,857 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:51,857 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:51,858 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:51,858 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:51,858 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:51,858 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:51,859 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:51,859 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:51,859 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:51,863 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:51,863 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:51,863 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:51,864 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:51,864 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:51,869 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:51,869 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:51,870 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:51,870 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:51,870 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:51,870 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:51,885 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-11 15:57:51,905 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 15:57:51,905 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-11 15:57:51,905 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 15:57:51,906 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 15:57:51,906 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 15:57:51,906 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 15:57:51,906 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 15:57:51,906 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 15:57:51,919 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-11 15:57:51,922 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 58 transitions, 126 flow [2020-10-11 15:57:51,925 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 61 places, 58 transitions, 126 flow [2020-10-11 15:57:51,927 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 58 transitions, 126 flow [2020-10-11 15:57:51,970 INFO L129 PetriNetUnfolder]: 4/68 cut-off events. [2020-10-11 15:57:51,970 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 15:57:51,976 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 68 events. 4/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 84 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 48. Up to 4 conditions per place. [2020-10-11 15:57:51,978 INFO L117 LiptonReduction]: Number of co-enabled transitions 592 [2020-10-11 15:57:53,318 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2020-10-11 15:57:53,543 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2020-10-11 15:57:53,612 INFO L132 LiptonReduction]: Checked pairs total: 576 [2020-10-11 15:57:53,613 INFO L134 LiptonReduction]: Total number of compositions: 54 [2020-10-11 15:57:53,620 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 18 places, 12 transitions, 34 flow [2020-10-11 15:57:53,630 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 44 states. [2020-10-11 15:57:53,633 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-10-11 15:57:53,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-11 15:57:53,639 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:57:53,640 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-11 15:57:53,641 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-11 15:57:53,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:57:53,647 INFO L82 PathProgramCache]: Analyzing trace with hash 229686, now seen corresponding path program 1 times [2020-10-11 15:57:53,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:57:53,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245281378] [2020-10-11 15:57:53,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:57:53,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:57:53,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:57:53,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245281378] [2020-10-11 15:57:53,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:57:53,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-11 15:57:53,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128322794] [2020-10-11 15:57:53,848 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 15:57:53,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:57:53,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 15:57:53,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 15:57:53,867 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 3 states. [2020-10-11 15:57:53,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:57:53,904 INFO L93 Difference]: Finished difference Result 35 states and 59 transitions. [2020-10-11 15:57:53,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 15:57:53,906 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-11 15:57:53,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:57:53,916 INFO L225 Difference]: With dead ends: 35 [2020-10-11 15:57:53,917 INFO L226 Difference]: Without dead ends: 31 [2020-10-11 15:57:53,918 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 15:57:53,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-11 15:57:53,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-11 15:57:53,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-11 15:57:53,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 51 transitions. [2020-10-11 15:57:53,958 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 51 transitions. Word has length 3 [2020-10-11 15:57:53,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:57:53,959 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 51 transitions. [2020-10-11 15:57:53,959 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 15:57:53,959 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 51 transitions. [2020-10-11 15:57:53,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-11 15:57:53,960 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:57:53,960 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:57:53,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-11 15:57:53,961 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-11 15:57:53,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:57:53,961 INFO L82 PathProgramCache]: Analyzing trace with hash 1647647331, now seen corresponding path program 1 times [2020-10-11 15:57:53,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:57:53,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298745434] [2020-10-11 15:57:53,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:57:53,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:57:54,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:57:54,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298745434] [2020-10-11 15:57:54,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:57:54,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-11 15:57:54,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188863070] [2020-10-11 15:57:54,040 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-11 15:57:54,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:57:54,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-11 15:57:54,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-11 15:57:54,041 INFO L87 Difference]: Start difference. First operand 31 states and 51 transitions. Second operand 4 states. [2020-10-11 15:57:54,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:57:54,062 INFO L93 Difference]: Finished difference Result 26 states and 42 transitions. [2020-10-11 15:57:54,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-11 15:57:54,063 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-11 15:57:54,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:57:54,064 INFO L225 Difference]: With dead ends: 26 [2020-10-11 15:57:54,064 INFO L226 Difference]: Without dead ends: 24 [2020-10-11 15:57:54,065 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-11 15:57:54,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-11 15:57:54,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-10-11 15:57:54,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-11 15:57:54,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 39 transitions. [2020-10-11 15:57:54,070 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 39 transitions. Word has length 7 [2020-10-11 15:57:54,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:57:54,071 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 39 transitions. [2020-10-11 15:57:54,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-11 15:57:54,071 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 39 transitions. [2020-10-11 15:57:54,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-11 15:57:54,072 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:57:54,084 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-10-11 15:57:54,085 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-11 15:57:54,085 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-11 15:57:54,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:57:54,085 INFO L82 PathProgramCache]: Analyzing trace with hash -462538936, now seen corresponding path program 1 times [2020-10-11 15:57:54,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:57:54,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383893828] [2020-10-11 15:57:54,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:57:54,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-11 15:57:54,111 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-11 15:57:54,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-11 15:57:54,126 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-11 15:57:54,150 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-11 15:57:54,150 INFO L519 BasicCegarLoop]: Counterexample might be feasible [2020-10-11 15:57:54,150 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-11 15:57:54,151 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-11 15:57:54,152 WARN L371 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-11 15:57:54,152 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-10-11 15:57:54,161 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:54,161 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:54,161 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:54,161 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:54,162 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:54,162 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:54,162 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:54,162 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:54,163 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:54,163 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:54,163 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:54,163 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:54,163 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:54,164 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:54,164 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:54,165 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:54,165 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:54,165 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:54,165 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:54,165 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:54,166 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:54,166 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:54,166 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:54,166 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:54,167 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:54,167 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:54,167 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:54,167 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:54,167 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:54,167 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:54,168 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:54,168 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:54,168 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:54,168 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:54,169 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:54,169 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:54,169 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:54,169 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:54,170 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:54,173 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:54,174 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:54,174 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:54,174 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:54,174 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:54,177 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:54,178 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:54,178 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:54,178 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:54,178 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:54,178 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:54,180 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:54,180 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:54,180 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:54,180 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:54,181 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:54,181 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:54,182 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-11 15:57:54,182 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 15:57:54,183 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-11 15:57:54,183 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 15:57:54,183 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 15:57:54,183 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 15:57:54,183 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 15:57:54,183 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 15:57:54,183 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 15:57:54,186 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-11 15:57:54,186 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 80 places, 74 transitions, 172 flow [2020-10-11 15:57:54,186 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 80 places, 74 transitions, 172 flow [2020-10-11 15:57:54,186 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 80 places, 74 transitions, 172 flow [2020-10-11 15:57:54,206 INFO L129 PetriNetUnfolder]: 5/89 cut-off events. [2020-10-11 15:57:54,207 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-11 15:57:54,208 INFO L80 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 89 events. 5/89 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 120 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 98. Up to 6 conditions per place. [2020-10-11 15:57:54,211 INFO L117 LiptonReduction]: Number of co-enabled transitions 920 [2020-10-11 15:57:55,570 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2020-10-11 15:57:55,709 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-10-11 15:57:55,715 INFO L132 LiptonReduction]: Checked pairs total: 1122 [2020-10-11 15:57:55,715 INFO L134 LiptonReduction]: Total number of compositions: 66 [2020-10-11 15:57:55,716 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 66 flow [2020-10-11 15:57:55,729 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 224 states. [2020-10-11 15:57:55,729 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states. [2020-10-11 15:57:55,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-11 15:57:55,730 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:57:55,730 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-11 15:57:55,730 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:57:55,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:57:55,731 INFO L82 PathProgramCache]: Analyzing trace with hash 384194, now seen corresponding path program 1 times [2020-10-11 15:57:55,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:57:55,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958407489] [2020-10-11 15:57:55,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:57:55,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:57:55,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:57:55,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958407489] [2020-10-11 15:57:55,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:57:55,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-11 15:57:55,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824404260] [2020-10-11 15:57:55,792 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 15:57:55,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:57:55,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 15:57:55,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 15:57:55,797 INFO L87 Difference]: Start difference. First operand 224 states. Second operand 3 states. [2020-10-11 15:57:55,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:57:55,851 INFO L93 Difference]: Finished difference Result 185 states and 459 transitions. [2020-10-11 15:57:55,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 15:57:55,853 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-11 15:57:55,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:57:55,859 INFO L225 Difference]: With dead ends: 185 [2020-10-11 15:57:55,859 INFO L226 Difference]: Without dead ends: 171 [2020-10-11 15:57:55,859 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 15:57:55,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-11 15:57:55,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2020-10-11 15:57:55,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-11 15:57:55,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 418 transitions. [2020-10-11 15:57:55,886 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 418 transitions. Word has length 3 [2020-10-11 15:57:55,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:57:55,886 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 418 transitions. [2020-10-11 15:57:55,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 15:57:55,886 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 418 transitions. [2020-10-11 15:57:55,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-11 15:57:55,887 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:57:55,887 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:57:55,887 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-11 15:57:55,888 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:57:55,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:57:55,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1694917346, now seen corresponding path program 1 times [2020-10-11 15:57:55,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:57:55,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403231156] [2020-10-11 15:57:55,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:57:55,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:57:55,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:57:55,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403231156] [2020-10-11 15:57:55,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:57:55,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 15:57:55,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106273731] [2020-10-11 15:57:55,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-11 15:57:55,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:57:55,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-11 15:57:55,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-11 15:57:55,950 INFO L87 Difference]: Start difference. First operand 171 states and 418 transitions. Second operand 5 states. [2020-10-11 15:57:56,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:57:56,047 INFO L93 Difference]: Finished difference Result 205 states and 460 transitions. [2020-10-11 15:57:56,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-11 15:57:56,050 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-11 15:57:56,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:57:56,053 INFO L225 Difference]: With dead ends: 205 [2020-10-11 15:57:56,053 INFO L226 Difference]: Without dead ends: 201 [2020-10-11 15:57:56,053 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-11 15:57:56,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-10-11 15:57:56,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 162. [2020-10-11 15:57:56,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-11 15:57:56,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 399 transitions. [2020-10-11 15:57:56,073 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 399 transitions. Word has length 9 [2020-10-11 15:57:56,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:57:56,074 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 399 transitions. [2020-10-11 15:57:56,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-11 15:57:56,074 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 399 transitions. [2020-10-11 15:57:56,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 15:57:56,075 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:57:56,075 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:57:56,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-11 15:57:56,076 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:57:56,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:57:56,076 INFO L82 PathProgramCache]: Analyzing trace with hash 1027741454, now seen corresponding path program 1 times [2020-10-11 15:57:56,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:57:56,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019013682] [2020-10-11 15:57:56,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:57:56,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:57:56,130 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-11 15:57:56,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019013682] [2020-10-11 15:57:56,131 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:57:56,131 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 15:57:56,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365002962] [2020-10-11 15:57:56,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-11 15:57:56,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:57:56,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-11 15:57:56,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-11 15:57:56,132 INFO L87 Difference]: Start difference. First operand 162 states and 399 transitions. Second operand 5 states. [2020-10-11 15:57:56,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:57:56,202 INFO L93 Difference]: Finished difference Result 189 states and 423 transitions. [2020-10-11 15:57:56,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-11 15:57:56,202 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-11 15:57:56,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:57:56,204 INFO L225 Difference]: With dead ends: 189 [2020-10-11 15:57:56,205 INFO L226 Difference]: Without dead ends: 185 [2020-10-11 15:57:56,205 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-11 15:57:56,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-11 15:57:56,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 153. [2020-10-11 15:57:56,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-11 15:57:56,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 367 transitions. [2020-10-11 15:57:56,218 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 367 transitions. Word has length 13 [2020-10-11 15:57:56,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:57:56,223 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 367 transitions. [2020-10-11 15:57:56,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-11 15:57:56,223 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 367 transitions. [2020-10-11 15:57:56,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 15:57:56,224 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:57:56,224 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:57:56,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-11 15:57:56,225 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:57:56,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:57:56,225 INFO L82 PathProgramCache]: Analyzing trace with hash 1792799235, now seen corresponding path program 1 times [2020-10-11 15:57:56,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:57:56,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860745661] [2020-10-11 15:57:56,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:57:56,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-11 15:57:56,261 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-11 15:57:56,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-11 15:57:56,285 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-11 15:57:56,298 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-11 15:57:56,298 INFO L519 BasicCegarLoop]: Counterexample might be feasible [2020-10-11 15:57:56,298 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-11 15:57:56,298 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-11 15:57:56,299 WARN L371 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-11 15:57:56,301 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-10-11 15:57:56,315 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,316 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,316 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,317 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,318 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,318 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,318 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,319 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,319 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,319 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,319 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,320 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,320 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,320 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,321 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,321 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,321 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,321 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,321 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,322 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,322 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,322 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,322 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,323 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,323 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,323 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,323 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,323 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,323 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,324 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,324 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,324 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,324 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,324 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,325 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,325 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,325 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,325 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,325 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,325 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,325 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,326 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,326 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,326 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,326 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,326 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,327 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,327 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,327 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,327 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,327 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,328 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,328 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,328 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,328 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,328 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,329 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,329 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,329 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,330 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,330 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,331 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,331 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,331 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,331 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,331 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,333 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,333 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,333 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,333 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,333 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,333 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,336 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,336 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,336 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,336 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,336 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,336 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,338 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,338 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,338 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,338 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,338 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,339 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:56,340 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-11 15:57:56,340 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 15:57:56,340 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-11 15:57:56,340 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 15:57:56,341 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 15:57:56,341 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 15:57:56,341 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 15:57:56,341 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 15:57:56,341 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 15:57:56,342 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-11 15:57:56,343 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 90 transitions, 222 flow [2020-10-11 15:57:56,343 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 99 places, 90 transitions, 222 flow [2020-10-11 15:57:56,343 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 99 places, 90 transitions, 222 flow [2020-10-11 15:57:56,362 INFO L129 PetriNetUnfolder]: 6/110 cut-off events. [2020-10-11 15:57:56,362 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-10-11 15:57:56,363 INFO L80 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 110 events. 6/110 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 163 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 124. Up to 8 conditions per place. [2020-10-11 15:57:56,366 INFO L117 LiptonReduction]: Number of co-enabled transitions 1308 [2020-10-11 15:57:57,669 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2020-10-11 15:57:57,905 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2020-10-11 15:57:58,035 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-10-11 15:57:58,043 INFO L132 LiptonReduction]: Checked pairs total: 1841 [2020-10-11 15:57:58,043 INFO L134 LiptonReduction]: Total number of compositions: 79 [2020-10-11 15:57:58,043 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 27 transitions, 96 flow [2020-10-11 15:57:58,066 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 683 states. [2020-10-11 15:57:58,067 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states. [2020-10-11 15:57:58,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-11 15:57:58,067 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:57:58,067 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-11 15:57:58,067 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:57:58,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:57:58,068 INFO L82 PathProgramCache]: Analyzing trace with hash 567457, now seen corresponding path program 1 times [2020-10-11 15:57:58,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:57:58,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403048432] [2020-10-11 15:57:58,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:57:58,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:57:58,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:57:58,100 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403048432] [2020-10-11 15:57:58,100 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:57:58,100 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-11 15:57:58,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368248871] [2020-10-11 15:57:58,101 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 15:57:58,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:57:58,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 15:57:58,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 15:57:58,102 INFO L87 Difference]: Start difference. First operand 683 states. Second operand 3 states. [2020-10-11 15:57:58,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:57:58,132 INFO L93 Difference]: Finished difference Result 600 states and 1886 transitions. [2020-10-11 15:57:58,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 15:57:58,132 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-11 15:57:58,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:57:58,138 INFO L225 Difference]: With dead ends: 600 [2020-10-11 15:57:58,139 INFO L226 Difference]: Without dead ends: 559 [2020-10-11 15:57:58,139 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 15:57:58,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2020-10-11 15:57:58,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 559. [2020-10-11 15:57:58,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 559 states. [2020-10-11 15:57:58,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 1737 transitions. [2020-10-11 15:57:58,188 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 1737 transitions. Word has length 3 [2020-10-11 15:57:58,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:57:58,188 INFO L481 AbstractCegarLoop]: Abstraction has 559 states and 1737 transitions. [2020-10-11 15:57:58,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 15:57:58,188 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 1737 transitions. [2020-10-11 15:57:58,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-11 15:57:58,189 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:57:58,189 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:57:58,189 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-11 15:57:58,189 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:57:58,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:57:58,190 INFO L82 PathProgramCache]: Analyzing trace with hash 1052273544, now seen corresponding path program 1 times [2020-10-11 15:57:58,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:57:58,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5720052] [2020-10-11 15:57:58,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:57:58,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:57:58,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:57:58,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5720052] [2020-10-11 15:57:58,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:57:58,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 15:57:58,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899705059] [2020-10-11 15:57:58,228 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-11 15:57:58,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:57:58,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-11 15:57:58,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-11 15:57:58,229 INFO L87 Difference]: Start difference. First operand 559 states and 1737 transitions. Second operand 5 states. [2020-10-11 15:57:58,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:57:58,351 INFO L93 Difference]: Finished difference Result 817 states and 2317 transitions. [2020-10-11 15:57:58,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-11 15:57:58,351 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-11 15:57:58,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:57:58,358 INFO L225 Difference]: With dead ends: 817 [2020-10-11 15:57:58,359 INFO L226 Difference]: Without dead ends: 812 [2020-10-11 15:57:58,359 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-11 15:57:58,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2020-10-11 15:57:58,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 585. [2020-10-11 15:57:58,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 585 states. [2020-10-11 15:57:58,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 1832 transitions. [2020-10-11 15:57:58,386 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 1832 transitions. Word has length 9 [2020-10-11 15:57:58,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:57:58,386 INFO L481 AbstractCegarLoop]: Abstraction has 585 states and 1832 transitions. [2020-10-11 15:57:58,386 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-11 15:57:58,386 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 1832 transitions. [2020-10-11 15:57:58,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 15:57:58,387 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:57:58,387 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:57:58,388 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-11 15:57:58,388 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:57:58,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:57:58,388 INFO L82 PathProgramCache]: Analyzing trace with hash 1096280394, now seen corresponding path program 1 times [2020-10-11 15:57:58,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:57:58,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854675851] [2020-10-11 15:57:58,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:57:58,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:57:58,429 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-11 15:57:58,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854675851] [2020-10-11 15:57:58,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:57:58,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 15:57:58,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170901666] [2020-10-11 15:57:58,430 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-11 15:57:58,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:57:58,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-11 15:57:58,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-11 15:57:58,431 INFO L87 Difference]: Start difference. First operand 585 states and 1832 transitions. Second operand 5 states. [2020-10-11 15:57:58,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:57:58,513 INFO L93 Difference]: Finished difference Result 843 states and 2406 transitions. [2020-10-11 15:57:58,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-11 15:57:58,514 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-11 15:57:58,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:57:58,520 INFO L225 Difference]: With dead ends: 843 [2020-10-11 15:57:58,520 INFO L226 Difference]: Without dead ends: 836 [2020-10-11 15:57:58,521 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-11 15:57:58,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2020-10-11 15:57:58,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 611. [2020-10-11 15:57:58,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2020-10-11 15:57:58,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 1906 transitions. [2020-10-11 15:57:58,546 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 1906 transitions. Word has length 13 [2020-10-11 15:57:58,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:57:58,547 INFO L481 AbstractCegarLoop]: Abstraction has 611 states and 1906 transitions. [2020-10-11 15:57:58,547 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-11 15:57:58,547 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 1906 transitions. [2020-10-11 15:57:58,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-11 15:57:58,548 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:57:58,548 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:57:58,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-11 15:57:58,548 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:57:58,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:57:58,549 INFO L82 PathProgramCache]: Analyzing trace with hash 2044985054, now seen corresponding path program 1 times [2020-10-11 15:57:58,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:57:58,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236932074] [2020-10-11 15:57:58,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:57:58,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:57:58,619 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:57:58,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236932074] [2020-10-11 15:57:58,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877913413] [2020-10-11 15:57:58,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 15:57:58,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:57:58,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-11 15:57:58,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 15:57:58,783 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:57:58,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 15:57:58,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-11 15:57:58,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581003169] [2020-10-11 15:57:58,785 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-11 15:57:58,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:57:58,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-11 15:57:58,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-11 15:57:58,785 INFO L87 Difference]: Start difference. First operand 611 states and 1906 transitions. Second operand 12 states. [2020-10-11 15:57:59,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:57:59,063 INFO L93 Difference]: Finished difference Result 1059 states and 2818 transitions. [2020-10-11 15:57:59,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 15:57:59,064 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-11 15:57:59,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:57:59,071 INFO L225 Difference]: With dead ends: 1059 [2020-10-11 15:57:59,071 INFO L226 Difference]: Without dead ends: 1052 [2020-10-11 15:57:59,072 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-10-11 15:57:59,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2020-10-11 15:57:59,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 591. [2020-10-11 15:57:59,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states. [2020-10-11 15:57:59,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 1840 transitions. [2020-10-11 15:57:59,105 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 1840 transitions. Word has length 15 [2020-10-11 15:57:59,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:57:59,106 INFO L481 AbstractCegarLoop]: Abstraction has 591 states and 1840 transitions. [2020-10-11 15:57:59,106 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-11 15:57:59,106 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 1840 transitions. [2020-10-11 15:57:59,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-11 15:57:59,108 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:57:59,109 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:57:59,322 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-10-11 15:57:59,323 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:57:59,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:57:59,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1258473782, now seen corresponding path program 2 times [2020-10-11 15:57:59,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:57:59,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374634353] [2020-10-11 15:57:59,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:57:59,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:57:59,371 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-11 15:57:59,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374634353] [2020-10-11 15:57:59,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:57:59,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-11 15:57:59,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704578718] [2020-10-11 15:57:59,372 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 15:57:59,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:57:59,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 15:57:59,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-11 15:57:59,373 INFO L87 Difference]: Start difference. First operand 591 states and 1840 transitions. Second operand 7 states. [2020-10-11 15:57:59,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:57:59,610 INFO L93 Difference]: Finished difference Result 1053 states and 2807 transitions. [2020-10-11 15:57:59,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 15:57:59,610 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-11 15:57:59,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:57:59,619 INFO L225 Difference]: With dead ends: 1053 [2020-10-11 15:57:59,619 INFO L226 Difference]: Without dead ends: 1045 [2020-10-11 15:57:59,620 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-11 15:57:59,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2020-10-11 15:57:59,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 536. [2020-10-11 15:57:59,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 536 states. [2020-10-11 15:57:59,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 1688 transitions. [2020-10-11 15:57:59,647 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 1688 transitions. Word has length 15 [2020-10-11 15:57:59,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:57:59,647 INFO L481 AbstractCegarLoop]: Abstraction has 536 states and 1688 transitions. [2020-10-11 15:57:59,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 15:57:59,647 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 1688 transitions. [2020-10-11 15:57:59,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-11 15:57:59,648 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:57:59,649 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:57:59,649 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-11 15:57:59,649 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:57:59,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:57:59,649 INFO L82 PathProgramCache]: Analyzing trace with hash 1734594488, now seen corresponding path program 1 times [2020-10-11 15:57:59,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:57:59,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133035893] [2020-10-11 15:57:59,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:57:59,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:57:59,689 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-11 15:57:59,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133035893] [2020-10-11 15:57:59,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:57:59,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 15:57:59,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657392361] [2020-10-11 15:57:59,691 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-11 15:57:59,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:57:59,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-11 15:57:59,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-11 15:57:59,692 INFO L87 Difference]: Start difference. First operand 536 states and 1688 transitions. Second operand 5 states. [2020-10-11 15:57:59,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:57:59,771 INFO L93 Difference]: Finished difference Result 736 states and 2123 transitions. [2020-10-11 15:57:59,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-11 15:57:59,772 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-11 15:57:59,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:57:59,777 INFO L225 Difference]: With dead ends: 736 [2020-10-11 15:57:59,777 INFO L226 Difference]: Without dead ends: 728 [2020-10-11 15:57:59,778 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-11 15:57:59,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2020-10-11 15:57:59,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 549. [2020-10-11 15:57:59,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 549 states. [2020-10-11 15:57:59,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 1684 transitions. [2020-10-11 15:57:59,799 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 1684 transitions. Word has length 17 [2020-10-11 15:57:59,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:57:59,799 INFO L481 AbstractCegarLoop]: Abstraction has 549 states and 1684 transitions. [2020-10-11 15:57:59,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-11 15:57:59,799 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 1684 transitions. [2020-10-11 15:57:59,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-11 15:57:59,800 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:57:59,801 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:57:59,801 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-11 15:57:59,801 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:57:59,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:57:59,801 INFO L82 PathProgramCache]: Analyzing trace with hash -2065233823, now seen corresponding path program 1 times [2020-10-11 15:57:59,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:57:59,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973343145] [2020-10-11 15:57:59,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:57:59,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-11 15:57:59,813 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-11 15:57:59,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-11 15:57:59,821 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-11 15:57:59,828 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-11 15:57:59,828 INFO L519 BasicCegarLoop]: Counterexample might be feasible [2020-10-11 15:57:59,829 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-11 15:57:59,829 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-11 15:57:59,829 WARN L371 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-11 15:57:59,830 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-10-11 15:57:59,842 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,842 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,842 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,842 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,843 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,843 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,843 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,843 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,843 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,843 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,844 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,844 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,844 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,844 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,844 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,845 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,845 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,845 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,845 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,845 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,845 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,846 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,846 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,846 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,846 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,846 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,846 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,846 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,847 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,847 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,847 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,847 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,847 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,847 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,848 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,848 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,848 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,848 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,848 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,848 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,849 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,849 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,849 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,849 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,849 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,849 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,849 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,850 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,850 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,850 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,850 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,850 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,850 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,851 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,851 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,851 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,851 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,851 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,851 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,851 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,852 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,852 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,852 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,852 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,852 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,852 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,852 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,853 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,853 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,853 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,853 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,853 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,854 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,855 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,855 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,855 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,855 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,856 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,857 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,857 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,857 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,857 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,857 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,858 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,859 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,859 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,859 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,859 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,860 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,861 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,861 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,861 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,861 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,861 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,862 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,863 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,863 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,863 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,863 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,864 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,865 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,865 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,865 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,865 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,866 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,866 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,867 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,867 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,867 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,868 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,868 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,868 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:57:59,869 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-11 15:57:59,870 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 15:57:59,870 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-11 15:57:59,870 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 15:57:59,870 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 15:57:59,870 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 15:57:59,870 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 15:57:59,870 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 15:57:59,870 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 15:57:59,872 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-11 15:57:59,872 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 118 places, 106 transitions, 276 flow [2020-10-11 15:57:59,873 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 118 places, 106 transitions, 276 flow [2020-10-11 15:57:59,873 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 118 places, 106 transitions, 276 flow [2020-10-11 15:57:59,897 INFO L129 PetriNetUnfolder]: 7/131 cut-off events. [2020-10-11 15:57:59,897 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-10-11 15:57:59,899 INFO L80 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 131 events. 7/131 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 201 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 151. Up to 10 conditions per place. [2020-10-11 15:57:59,903 INFO L117 LiptonReduction]: Number of co-enabled transitions 1756 [2020-10-11 15:58:01,480 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2020-10-11 15:58:01,750 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2020-10-11 15:58:01,911 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2020-10-11 15:58:01,998 INFO L132 LiptonReduction]: Checked pairs total: 2590 [2020-10-11 15:58:01,998 INFO L134 LiptonReduction]: Total number of compositions: 92 [2020-10-11 15:58:01,998 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 51 places, 33 transitions, 130 flow [2020-10-11 15:58:02,122 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 2060 states. [2020-10-11 15:58:02,122 INFO L276 IsEmpty]: Start isEmpty. Operand 2060 states. [2020-10-11 15:58:02,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-11 15:58:02,122 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:58:02,123 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-11 15:58:02,123 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-11 15:58:02,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:58:02,123 INFO L82 PathProgramCache]: Analyzing trace with hash 779528, now seen corresponding path program 1 times [2020-10-11 15:58:02,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:58:02,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357998917] [2020-10-11 15:58:02,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:58:02,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:58:02,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:58:02,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357998917] [2020-10-11 15:58:02,142 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:58:02,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-11 15:58:02,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071678072] [2020-10-11 15:58:02,143 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 15:58:02,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:58:02,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 15:58:02,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 15:58:02,144 INFO L87 Difference]: Start difference. First operand 2060 states. Second operand 3 states. [2020-10-11 15:58:02,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:58:02,182 INFO L93 Difference]: Finished difference Result 1889 states and 7217 transitions. [2020-10-11 15:58:02,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 15:58:02,183 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-11 15:58:02,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:58:02,198 INFO L225 Difference]: With dead ends: 1889 [2020-10-11 15:58:02,198 INFO L226 Difference]: Without dead ends: 1767 [2020-10-11 15:58:02,199 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 15:58:02,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2020-10-11 15:58:02,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1767. [2020-10-11 15:58:02,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1767 states. [2020-10-11 15:58:02,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1767 states to 1767 states and 6690 transitions. [2020-10-11 15:58:02,277 INFO L78 Accepts]: Start accepts. Automaton has 1767 states and 6690 transitions. Word has length 3 [2020-10-11 15:58:02,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:58:02,278 INFO L481 AbstractCegarLoop]: Abstraction has 1767 states and 6690 transitions. [2020-10-11 15:58:02,278 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 15:58:02,278 INFO L276 IsEmpty]: Start isEmpty. Operand 1767 states and 6690 transitions. [2020-10-11 15:58:02,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-11 15:58:02,278 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:58:02,278 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:58:02,278 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-11 15:58:02,279 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-11 15:58:02,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:58:02,279 INFO L82 PathProgramCache]: Analyzing trace with hash -666106918, now seen corresponding path program 1 times [2020-10-11 15:58:02,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:58:02,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482432852] [2020-10-11 15:58:02,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:58:02,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:58:02,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:58:02,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482432852] [2020-10-11 15:58:02,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:58:02,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 15:58:02,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139921358] [2020-10-11 15:58:02,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-11 15:58:02,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:58:02,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-11 15:58:02,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-11 15:58:02,327 INFO L87 Difference]: Start difference. First operand 1767 states and 6690 transitions. Second operand 5 states. [2020-10-11 15:58:02,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:58:02,429 INFO L93 Difference]: Finished difference Result 2905 states and 10138 transitions. [2020-10-11 15:58:02,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-11 15:58:02,430 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-11 15:58:02,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:58:02,454 INFO L225 Difference]: With dead ends: 2905 [2020-10-11 15:58:02,454 INFO L226 Difference]: Without dead ends: 2899 [2020-10-11 15:58:02,454 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-11 15:58:02,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2899 states. [2020-10-11 15:58:02,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2899 to 1966. [2020-10-11 15:58:02,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1966 states. [2020-10-11 15:58:02,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1966 states to 1966 states and 7503 transitions. [2020-10-11 15:58:02,557 INFO L78 Accepts]: Start accepts. Automaton has 1966 states and 7503 transitions. Word has length 9 [2020-10-11 15:58:02,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:58:02,557 INFO L481 AbstractCegarLoop]: Abstraction has 1966 states and 7503 transitions. [2020-10-11 15:58:02,557 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-11 15:58:02,558 INFO L276 IsEmpty]: Start isEmpty. Operand 1966 states and 7503 transitions. [2020-10-11 15:58:02,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 15:58:02,558 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:58:02,558 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:58:02,558 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-11 15:58:02,559 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-11 15:58:02,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:58:02,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1766896000, now seen corresponding path program 1 times [2020-10-11 15:58:02,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:58:02,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506528515] [2020-10-11 15:58:02,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:58:02,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:58:02,597 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-11 15:58:02,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506528515] [2020-10-11 15:58:02,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:58:02,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 15:58:02,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521094203] [2020-10-11 15:58:02,598 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-11 15:58:02,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:58:02,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-11 15:58:02,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-11 15:58:02,599 INFO L87 Difference]: Start difference. First operand 1966 states and 7503 transitions. Second operand 5 states. [2020-10-11 15:58:02,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:58:02,703 INFO L93 Difference]: Finished difference Result 3204 states and 11312 transitions. [2020-10-11 15:58:02,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-11 15:58:02,704 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-11 15:58:02,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:58:02,730 INFO L225 Difference]: With dead ends: 3204 [2020-10-11 15:58:02,731 INFO L226 Difference]: Without dead ends: 3194 [2020-10-11 15:58:02,731 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-11 15:58:02,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3194 states. [2020-10-11 15:58:02,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3194 to 2200. [2020-10-11 15:58:02,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2200 states. [2020-10-11 15:58:02,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2200 states to 2200 states and 8453 transitions. [2020-10-11 15:58:02,832 INFO L78 Accepts]: Start accepts. Automaton has 2200 states and 8453 transitions. Word has length 13 [2020-10-11 15:58:02,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:58:02,832 INFO L481 AbstractCegarLoop]: Abstraction has 2200 states and 8453 transitions. [2020-10-11 15:58:02,832 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-11 15:58:02,832 INFO L276 IsEmpty]: Start isEmpty. Operand 2200 states and 8453 transitions. [2020-10-11 15:58:02,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-11 15:58:02,833 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:58:02,833 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:58:02,833 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-11 15:58:02,834 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-11 15:58:02,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:58:02,834 INFO L82 PathProgramCache]: Analyzing trace with hash -1022394712, now seen corresponding path program 1 times [2020-10-11 15:58:02,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:58:02,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127898099] [2020-10-11 15:58:02,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:58:02,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:58:02,884 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:58:02,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127898099] [2020-10-11 15:58:02,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854656052] [2020-10-11 15:58:02,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 15:58:02,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:58:02,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-11 15:58:02,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 15:58:03,002 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:58:03,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 15:58:03,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-11 15:58:03,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985328870] [2020-10-11 15:58:03,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-11 15:58:03,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:58:03,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-11 15:58:03,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-11 15:58:03,005 INFO L87 Difference]: Start difference. First operand 2200 states and 8453 transitions. Second operand 12 states. [2020-10-11 15:58:03,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:58:03,355 INFO L93 Difference]: Finished difference Result 4556 states and 14911 transitions. [2020-10-11 15:58:03,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 15:58:03,356 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-11 15:58:03,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:58:03,379 INFO L225 Difference]: With dead ends: 4556 [2020-10-11 15:58:03,379 INFO L226 Difference]: Without dead ends: 4546 [2020-10-11 15:58:03,380 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-11 15:58:03,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4546 states. [2020-10-11 15:58:03,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4546 to 2157. [2020-10-11 15:58:03,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2157 states. [2020-10-11 15:58:03,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2157 states to 2157 states and 8278 transitions. [2020-10-11 15:58:03,543 INFO L78 Accepts]: Start accepts. Automaton has 2157 states and 8278 transitions. Word has length 15 [2020-10-11 15:58:03,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:58:03,543 INFO L481 AbstractCegarLoop]: Abstraction has 2157 states and 8278 transitions. [2020-10-11 15:58:03,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-11 15:58:03,543 INFO L276 IsEmpty]: Start isEmpty. Operand 2157 states and 8278 transitions. [2020-10-11 15:58:03,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-11 15:58:03,544 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:58:03,545 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:58:03,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-11 15:58:03,758 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-11 15:58:03,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:58:03,758 INFO L82 PathProgramCache]: Analyzing trace with hash -1474969304, now seen corresponding path program 2 times [2020-10-11 15:58:03,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:58:03,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385733311] [2020-10-11 15:58:03,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:58:03,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:58:03,810 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-11 15:58:03,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385733311] [2020-10-11 15:58:03,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:58:03,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-11 15:58:03,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714149830] [2020-10-11 15:58:03,812 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 15:58:03,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:58:03,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 15:58:03,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-11 15:58:03,816 INFO L87 Difference]: Start difference. First operand 2157 states and 8278 transitions. Second operand 7 states. [2020-10-11 15:58:04,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:58:04,099 INFO L93 Difference]: Finished difference Result 4612 states and 15111 transitions. [2020-10-11 15:58:04,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 15:58:04,099 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-11 15:58:04,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:58:04,115 INFO L225 Difference]: With dead ends: 4612 [2020-10-11 15:58:04,115 INFO L226 Difference]: Without dead ends: 4601 [2020-10-11 15:58:04,115 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-11 15:58:04,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4601 states. [2020-10-11 15:58:04,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4601 to 2035. [2020-10-11 15:58:04,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2035 states. [2020-10-11 15:58:04,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2035 states to 2035 states and 7845 transitions. [2020-10-11 15:58:04,218 INFO L78 Accepts]: Start accepts. Automaton has 2035 states and 7845 transitions. Word has length 15 [2020-10-11 15:58:04,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:58:04,219 INFO L481 AbstractCegarLoop]: Abstraction has 2035 states and 7845 transitions. [2020-10-11 15:58:04,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 15:58:04,219 INFO L276 IsEmpty]: Start isEmpty. Operand 2035 states and 7845 transitions. [2020-10-11 15:58:04,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-11 15:58:04,220 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:58:04,220 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:58:04,220 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-11 15:58:04,220 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-11 15:58:04,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:58:04,220 INFO L82 PathProgramCache]: Analyzing trace with hash -1278978660, now seen corresponding path program 1 times [2020-10-11 15:58:04,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:58:04,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573076090] [2020-10-11 15:58:04,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:58:04,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:58:04,258 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-11 15:58:04,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573076090] [2020-10-11 15:58:04,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:58:04,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 15:58:04,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802268722] [2020-10-11 15:58:04,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-11 15:58:04,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:58:04,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-11 15:58:04,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-11 15:58:04,260 INFO L87 Difference]: Start difference. First operand 2035 states and 7845 transitions. Second operand 5 states. [2020-10-11 15:58:04,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:58:04,365 INFO L93 Difference]: Finished difference Result 3265 states and 11681 transitions. [2020-10-11 15:58:04,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-11 15:58:04,365 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-11 15:58:04,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:58:04,377 INFO L225 Difference]: With dead ends: 3265 [2020-10-11 15:58:04,377 INFO L226 Difference]: Without dead ends: 3250 [2020-10-11 15:58:04,377 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-11 15:58:04,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3250 states. [2020-10-11 15:58:04,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3250 to 2281. [2020-10-11 15:58:04,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2281 states. [2020-10-11 15:58:04,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2281 states to 2281 states and 8755 transitions. [2020-10-11 15:58:04,467 INFO L78 Accepts]: Start accepts. Automaton has 2281 states and 8755 transitions. Word has length 17 [2020-10-11 15:58:04,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:58:04,467 INFO L481 AbstractCegarLoop]: Abstraction has 2281 states and 8755 transitions. [2020-10-11 15:58:04,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-11 15:58:04,467 INFO L276 IsEmpty]: Start isEmpty. Operand 2281 states and 8755 transitions. [2020-10-11 15:58:04,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-11 15:58:04,469 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:58:04,469 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:58:04,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-11 15:58:04,469 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-11 15:58:04,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:58:04,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1455436228, now seen corresponding path program 1 times [2020-10-11 15:58:04,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:58:04,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141709376] [2020-10-11 15:58:04,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:58:04,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:58:04,533 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-11 15:58:04,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141709376] [2020-10-11 15:58:04,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093910308] [2020-10-11 15:58:04,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 15:58:04,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:58:04,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-11 15:58:04,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 15:58:04,674 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-11 15:58:04,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 15:58:04,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-11 15:58:04,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17138654] [2020-10-11 15:58:04,675 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-11 15:58:04,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:58:04,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-11 15:58:04,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-11 15:58:04,676 INFO L87 Difference]: Start difference. First operand 2281 states and 8755 transitions. Second operand 12 states. [2020-10-11 15:58:05,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:58:05,032 INFO L93 Difference]: Finished difference Result 4825 states and 15986 transitions. [2020-10-11 15:58:05,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 15:58:05,032 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-10-11 15:58:05,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:58:05,106 INFO L225 Difference]: With dead ends: 4825 [2020-10-11 15:58:05,106 INFO L226 Difference]: Without dead ends: 4813 [2020-10-11 15:58:05,107 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-11 15:58:05,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4813 states. [2020-10-11 15:58:05,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4813 to 2305. [2020-10-11 15:58:05,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2305 states. [2020-10-11 15:58:05,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2305 states to 2305 states and 8815 transitions. [2020-10-11 15:58:05,225 INFO L78 Accepts]: Start accepts. Automaton has 2305 states and 8815 transitions. Word has length 19 [2020-10-11 15:58:05,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:58:05,225 INFO L481 AbstractCegarLoop]: Abstraction has 2305 states and 8815 transitions. [2020-10-11 15:58:05,225 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-11 15:58:05,225 INFO L276 IsEmpty]: Start isEmpty. Operand 2305 states and 8815 transitions. [2020-10-11 15:58:05,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-11 15:58:05,227 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:58:05,227 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:58:05,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 15:58:05,441 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-11 15:58:05,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:58:05,442 INFO L82 PathProgramCache]: Analyzing trace with hash -979473248, now seen corresponding path program 1 times [2020-10-11 15:58:05,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:58:05,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248257208] [2020-10-11 15:58:05,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:58:05,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:58:05,493 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-11 15:58:05,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248257208] [2020-10-11 15:58:05,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805516054] [2020-10-11 15:58:05,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 15:58:05,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:58:05,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-11 15:58:05,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 15:58:05,666 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-11 15:58:05,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 15:58:05,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-11 15:58:05,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754700923] [2020-10-11 15:58:05,668 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-11 15:58:05,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:58:05,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-11 15:58:05,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-11 15:58:05,668 INFO L87 Difference]: Start difference. First operand 2305 states and 8815 transitions. Second operand 12 states. [2020-10-11 15:58:06,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:58:06,090 INFO L93 Difference]: Finished difference Result 4942 states and 16410 transitions. [2020-10-11 15:58:06,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 15:58:06,091 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-10-11 15:58:06,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:58:06,106 INFO L225 Difference]: With dead ends: 4942 [2020-10-11 15:58:06,106 INFO L226 Difference]: Without dead ends: 4925 [2020-10-11 15:58:06,107 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-11 15:58:06,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4925 states. [2020-10-11 15:58:06,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4925 to 2299. [2020-10-11 15:58:06,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2299 states. [2020-10-11 15:58:06,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2299 states to 2299 states and 8782 transitions. [2020-10-11 15:58:06,213 INFO L78 Accepts]: Start accepts. Automaton has 2299 states and 8782 transitions. Word has length 19 [2020-10-11 15:58:06,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:58:06,213 INFO L481 AbstractCegarLoop]: Abstraction has 2299 states and 8782 transitions. [2020-10-11 15:58:06,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-11 15:58:06,213 INFO L276 IsEmpty]: Start isEmpty. Operand 2299 states and 8782 transitions. [2020-10-11 15:58:06,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-11 15:58:06,215 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:58:06,215 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:58:06,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 15:58:06,429 INFO L429 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-11 15:58:06,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:58:06,430 INFO L82 PathProgramCache]: Analyzing trace with hash -737855584, now seen corresponding path program 2 times [2020-10-11 15:58:06,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:58:06,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705043632] [2020-10-11 15:58:06,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:58:06,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:58:06,485 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-11 15:58:06,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705043632] [2020-10-11 15:58:06,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:58:06,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-11 15:58:06,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076503580] [2020-10-11 15:58:06,487 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 15:58:06,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:58:06,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 15:58:06,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-11 15:58:06,488 INFO L87 Difference]: Start difference. First operand 2299 states and 8782 transitions. Second operand 7 states. [2020-10-11 15:58:06,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:58:06,784 INFO L93 Difference]: Finished difference Result 4934 states and 16393 transitions. [2020-10-11 15:58:06,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 15:58:06,785 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-11 15:58:06,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:58:06,801 INFO L225 Difference]: With dead ends: 4934 [2020-10-11 15:58:06,801 INFO L226 Difference]: Without dead ends: 4917 [2020-10-11 15:58:06,802 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-11 15:58:06,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4917 states. [2020-10-11 15:58:06,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4917 to 2216. [2020-10-11 15:58:06,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2216 states. [2020-10-11 15:58:06,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2216 states to 2216 states and 8477 transitions. [2020-10-11 15:58:06,893 INFO L78 Accepts]: Start accepts. Automaton has 2216 states and 8477 transitions. Word has length 19 [2020-10-11 15:58:06,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:58:06,893 INFO L481 AbstractCegarLoop]: Abstraction has 2216 states and 8477 transitions. [2020-10-11 15:58:06,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 15:58:06,893 INFO L276 IsEmpty]: Start isEmpty. Operand 2216 states and 8477 transitions. [2020-10-11 15:58:06,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-11 15:58:06,895 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:58:06,895 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:58:06,895 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-11 15:58:06,895 INFO L429 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-11 15:58:06,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:58:06,896 INFO L82 PathProgramCache]: Analyzing trace with hash -737840828, now seen corresponding path program 2 times [2020-10-11 15:58:06,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:58:06,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677144775] [2020-10-11 15:58:06,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:58:06,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:58:06,948 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-11 15:58:06,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677144775] [2020-10-11 15:58:06,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:58:06,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-11 15:58:06,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630919201] [2020-10-11 15:58:06,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 15:58:06,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:58:06,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 15:58:06,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-11 15:58:06,950 INFO L87 Difference]: Start difference. First operand 2216 states and 8477 transitions. Second operand 7 states. [2020-10-11 15:58:07,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:58:07,223 INFO L93 Difference]: Finished difference Result 4774 states and 15828 transitions. [2020-10-11 15:58:07,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 15:58:07,224 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-11 15:58:07,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:58:07,236 INFO L225 Difference]: With dead ends: 4774 [2020-10-11 15:58:07,236 INFO L226 Difference]: Without dead ends: 4757 [2020-10-11 15:58:07,237 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-11 15:58:07,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4757 states. [2020-10-11 15:58:07,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4757 to 2150. [2020-10-11 15:58:07,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2150 states. [2020-10-11 15:58:07,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 8243 transitions. [2020-10-11 15:58:07,412 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 8243 transitions. Word has length 19 [2020-10-11 15:58:07,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:58:07,413 INFO L481 AbstractCegarLoop]: Abstraction has 2150 states and 8243 transitions. [2020-10-11 15:58:07,413 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 15:58:07,413 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 8243 transitions. [2020-10-11 15:58:07,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-11 15:58:07,415 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:58:07,415 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:58:07,416 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-11 15:58:07,416 INFO L429 AbstractCegarLoop]: === Iteration 11 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-11 15:58:07,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:58:07,416 INFO L82 PathProgramCache]: Analyzing trace with hash -1726751032, now seen corresponding path program 1 times [2020-10-11 15:58:07,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:58:07,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808356278] [2020-10-11 15:58:07,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:58:07,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:58:07,511 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:58:07,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808356278] [2020-10-11 15:58:07,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647207370] [2020-10-11 15:58:07,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 15:58:07,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:58:07,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 15:58:07,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 15:58:07,676 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:58:07,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 15:58:07,677 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-11 15:58:07,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429954545] [2020-10-11 15:58:07,677 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-11 15:58:07,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:58:07,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-11 15:58:07,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-11 15:58:07,678 INFO L87 Difference]: Start difference. First operand 2150 states and 8243 transitions. Second operand 16 states. [2020-10-11 15:58:08,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:58:08,485 INFO L93 Difference]: Finished difference Result 6025 states and 18746 transitions. [2020-10-11 15:58:08,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 15:58:08,486 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-11 15:58:08,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:58:08,495 INFO L225 Difference]: With dead ends: 6025 [2020-10-11 15:58:08,495 INFO L226 Difference]: Without dead ends: 6017 [2020-10-11 15:58:08,496 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-11 15:58:08,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6017 states. [2020-10-11 15:58:08,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6017 to 2117. [2020-10-11 15:58:08,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2117 states. [2020-10-11 15:58:08,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2117 states to 2117 states and 8106 transitions. [2020-10-11 15:58:08,581 INFO L78 Accepts]: Start accepts. Automaton has 2117 states and 8106 transitions. Word has length 21 [2020-10-11 15:58:08,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:58:08,581 INFO L481 AbstractCegarLoop]: Abstraction has 2117 states and 8106 transitions. [2020-10-11 15:58:08,581 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-11 15:58:08,581 INFO L276 IsEmpty]: Start isEmpty. Operand 2117 states and 8106 transitions. [2020-10-11 15:58:08,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-11 15:58:08,583 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:58:08,583 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:58:08,794 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-10-11 15:58:08,795 INFO L429 AbstractCegarLoop]: === Iteration 12 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-11 15:58:08,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:58:08,796 INFO L82 PathProgramCache]: Analyzing trace with hash -1485133368, now seen corresponding path program 2 times [2020-10-11 15:58:08,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:58:08,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116374990] [2020-10-11 15:58:08,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:58:08,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:58:08,880 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-11 15:58:08,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116374990] [2020-10-11 15:58:08,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098594762] [2020-10-11 15:58:08,881 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 15:58:08,966 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 15:58:08,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 15:58:08,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 15:58:08,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 15:58:09,098 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-11 15:58:09,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 15:58:09,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-11 15:58:09,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988088442] [2020-10-11 15:58:09,100 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-11 15:58:09,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:58:09,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-11 15:58:09,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-11 15:58:09,101 INFO L87 Difference]: Start difference. First operand 2117 states and 8106 transitions. Second operand 16 states. [2020-10-11 15:58:09,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:58:09,963 INFO L93 Difference]: Finished difference Result 5914 states and 18384 transitions. [2020-10-11 15:58:09,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 15:58:09,963 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-11 15:58:09,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:58:09,975 INFO L225 Difference]: With dead ends: 5914 [2020-10-11 15:58:09,976 INFO L226 Difference]: Without dead ends: 5903 [2020-10-11 15:58:09,976 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-11 15:58:10,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5903 states. [2020-10-11 15:58:10,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5903 to 2085. [2020-10-11 15:58:10,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2085 states. [2020-10-11 15:58:10,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2085 states to 2085 states and 7975 transitions. [2020-10-11 15:58:10,070 INFO L78 Accepts]: Start accepts. Automaton has 2085 states and 7975 transitions. Word has length 21 [2020-10-11 15:58:10,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:58:10,070 INFO L481 AbstractCegarLoop]: Abstraction has 2085 states and 7975 transitions. [2020-10-11 15:58:10,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-11 15:58:10,071 INFO L276 IsEmpty]: Start isEmpty. Operand 2085 states and 7975 transitions. [2020-10-11 15:58:10,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-11 15:58:10,072 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:58:10,072 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:58:10,287 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 15:58:10,288 INFO L429 AbstractCegarLoop]: === Iteration 13 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-11 15:58:10,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:58:10,288 INFO L82 PathProgramCache]: Analyzing trace with hash -268549816, now seen corresponding path program 3 times [2020-10-11 15:58:10,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:58:10,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571170571] [2020-10-11 15:58:10,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:58:10,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:58:10,355 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-11 15:58:10,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571170571] [2020-10-11 15:58:10,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893532823] [2020-10-11 15:58:10,356 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 15:58:10,431 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-11 15:58:10,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 15:58:10,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 15:58:10,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 15:58:10,527 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-11 15:58:10,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 15:58:10,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-11 15:58:10,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693500085] [2020-10-11 15:58:10,528 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-11 15:58:10,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:58:10,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-11 15:58:10,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-11 15:58:10,529 INFO L87 Difference]: Start difference. First operand 2085 states and 7975 transitions. Second operand 16 states. [2020-10-11 15:58:11,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:58:11,327 INFO L93 Difference]: Finished difference Result 5907 states and 18375 transitions. [2020-10-11 15:58:11,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 15:58:11,327 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-11 15:58:11,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:58:11,336 INFO L225 Difference]: With dead ends: 5907 [2020-10-11 15:58:11,336 INFO L226 Difference]: Without dead ends: 5899 [2020-10-11 15:58:11,337 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-11 15:58:11,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5899 states. [2020-10-11 15:58:11,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5899 to 2008. [2020-10-11 15:58:11,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2008 states. [2020-10-11 15:58:11,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2008 states to 2008 states and 7698 transitions. [2020-10-11 15:58:11,417 INFO L78 Accepts]: Start accepts. Automaton has 2008 states and 7698 transitions. Word has length 21 [2020-10-11 15:58:11,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:58:11,418 INFO L481 AbstractCegarLoop]: Abstraction has 2008 states and 7698 transitions. [2020-10-11 15:58:11,418 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-11 15:58:11,418 INFO L276 IsEmpty]: Start isEmpty. Operand 2008 states and 7698 transitions. [2020-10-11 15:58:11,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-11 15:58:11,421 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:58:11,421 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:58:11,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-10-11 15:58:11,634 INFO L429 AbstractCegarLoop]: === Iteration 14 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-11 15:58:11,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:58:11,636 INFO L82 PathProgramCache]: Analyzing trace with hash -675948728, now seen corresponding path program 4 times [2020-10-11 15:58:11,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:58:11,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330737750] [2020-10-11 15:58:11,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:58:11,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:58:11,723 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-11 15:58:11,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330737750] [2020-10-11 15:58:11,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71638866] [2020-10-11 15:58:11,724 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 15:58:11,780 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 15:58:11,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 15:58:11,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 15:58:11,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 15:58:11,881 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-11 15:58:11,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 15:58:11,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-11 15:58:11,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493910303] [2020-10-11 15:58:11,883 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-11 15:58:11,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:58:11,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-11 15:58:11,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-11 15:58:11,885 INFO L87 Difference]: Start difference. First operand 2008 states and 7698 transitions. Second operand 16 states. [2020-10-11 15:58:12,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:58:12,766 INFO L93 Difference]: Finished difference Result 5835 states and 18155 transitions. [2020-10-11 15:58:12,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 15:58:12,766 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-11 15:58:12,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:58:12,775 INFO L225 Difference]: With dead ends: 5835 [2020-10-11 15:58:12,775 INFO L226 Difference]: Without dead ends: 5824 [2020-10-11 15:58:12,776 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-11 15:58:12,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5824 states. [2020-10-11 15:58:12,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5824 to 1976. [2020-10-11 15:58:12,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1976 states. [2020-10-11 15:58:12,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1976 states to 1976 states and 7567 transitions. [2020-10-11 15:58:12,860 INFO L78 Accepts]: Start accepts. Automaton has 1976 states and 7567 transitions. Word has length 21 [2020-10-11 15:58:12,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:58:12,860 INFO L481 AbstractCegarLoop]: Abstraction has 1976 states and 7567 transitions. [2020-10-11 15:58:12,860 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-11 15:58:12,860 INFO L276 IsEmpty]: Start isEmpty. Operand 1976 states and 7567 transitions. [2020-10-11 15:58:12,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-11 15:58:12,863 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:58:12,863 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:58:13,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-10-11 15:58:13,076 INFO L429 AbstractCegarLoop]: === Iteration 15 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-11 15:58:13,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:58:13,077 INFO L82 PathProgramCache]: Analyzing trace with hash -409607608, now seen corresponding path program 5 times [2020-10-11 15:58:13,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:58:13,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532580260] [2020-10-11 15:58:13,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:58:13,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:58:13,163 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-11 15:58:13,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532580260] [2020-10-11 15:58:13,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:58:13,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 15:58:13,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785037914] [2020-10-11 15:58:13,165 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-11 15:58:13,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:58:13,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-11 15:58:13,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-11 15:58:13,166 INFO L87 Difference]: Start difference. First operand 1976 states and 7567 transitions. Second operand 9 states. [2020-10-11 15:58:13,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:58:13,857 INFO L93 Difference]: Finished difference Result 5820 states and 18126 transitions. [2020-10-11 15:58:13,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 15:58:13,857 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-11 15:58:13,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:58:13,866 INFO L225 Difference]: With dead ends: 5820 [2020-10-11 15:58:13,866 INFO L226 Difference]: Without dead ends: 5812 [2020-10-11 15:58:13,867 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-11 15:58:13,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5812 states. [2020-10-11 15:58:13,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5812 to 1907. [2020-10-11 15:58:13,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1907 states. [2020-10-11 15:58:13,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1907 states to 1907 states and 7310 transitions. [2020-10-11 15:58:13,936 INFO L78 Accepts]: Start accepts. Automaton has 1907 states and 7310 transitions. Word has length 21 [2020-10-11 15:58:13,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:58:13,936 INFO L481 AbstractCegarLoop]: Abstraction has 1907 states and 7310 transitions. [2020-10-11 15:58:13,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-11 15:58:13,937 INFO L276 IsEmpty]: Start isEmpty. Operand 1907 states and 7310 transitions. [2020-10-11 15:58:13,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-11 15:58:13,938 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:58:13,938 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:58:13,939 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-11 15:58:13,939 INFO L429 AbstractCegarLoop]: === Iteration 16 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-11 15:58:13,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:58:13,939 INFO L82 PathProgramCache]: Analyzing trace with hash -395441848, now seen corresponding path program 6 times [2020-10-11 15:58:13,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:58:13,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594344799] [2020-10-11 15:58:13,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:58:13,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:58:14,016 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-11 15:58:14,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594344799] [2020-10-11 15:58:14,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:58:14,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 15:58:14,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383841528] [2020-10-11 15:58:14,018 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-11 15:58:14,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:58:14,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-11 15:58:14,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-11 15:58:14,018 INFO L87 Difference]: Start difference. First operand 1907 states and 7310 transitions. Second operand 9 states. [2020-10-11 15:58:14,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:58:14,685 INFO L93 Difference]: Finished difference Result 5717 states and 17784 transitions. [2020-10-11 15:58:14,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 15:58:14,686 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-11 15:58:14,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:58:14,698 INFO L225 Difference]: With dead ends: 5717 [2020-10-11 15:58:14,698 INFO L226 Difference]: Without dead ends: 5705 [2020-10-11 15:58:14,700 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-11 15:58:14,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5705 states. [2020-10-11 15:58:14,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5705 to 1800. [2020-10-11 15:58:14,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1800 states. [2020-10-11 15:58:14,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1800 states to 1800 states and 6961 transitions. [2020-10-11 15:58:14,857 INFO L78 Accepts]: Start accepts. Automaton has 1800 states and 6961 transitions. Word has length 21 [2020-10-11 15:58:14,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:58:14,858 INFO L481 AbstractCegarLoop]: Abstraction has 1800 states and 6961 transitions. [2020-10-11 15:58:14,858 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-11 15:58:14,858 INFO L276 IsEmpty]: Start isEmpty. Operand 1800 states and 6961 transitions. [2020-10-11 15:58:14,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-11 15:58:14,859 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:58:14,860 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:58:14,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-11 15:58:14,860 INFO L429 AbstractCegarLoop]: === Iteration 17 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-11 15:58:14,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:58:14,860 INFO L82 PathProgramCache]: Analyzing trace with hash -334654421, now seen corresponding path program 1 times [2020-10-11 15:58:14,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:58:14,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437090183] [2020-10-11 15:58:14,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:58:14,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:58:14,906 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-11 15:58:14,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437090183] [2020-10-11 15:58:14,906 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:58:14,906 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 15:58:14,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208882069] [2020-10-11 15:58:14,907 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-11 15:58:14,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:58:14,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-11 15:58:14,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-11 15:58:14,907 INFO L87 Difference]: Start difference. First operand 1800 states and 6961 transitions. Second operand 5 states. [2020-10-11 15:58:15,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:58:15,000 INFO L93 Difference]: Finished difference Result 2762 states and 9976 transitions. [2020-10-11 15:58:15,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-11 15:58:15,001 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-11 15:58:15,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:58:15,006 INFO L225 Difference]: With dead ends: 2762 [2020-10-11 15:58:15,006 INFO L226 Difference]: Without dead ends: 2746 [2020-10-11 15:58:15,006 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-11 15:58:15,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2746 states. [2020-10-11 15:58:15,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2746 to 1965. [2020-10-11 15:58:15,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1965 states. [2020-10-11 15:58:15,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1965 states to 1965 states and 7429 transitions. [2020-10-11 15:58:15,061 INFO L78 Accepts]: Start accepts. Automaton has 1965 states and 7429 transitions. Word has length 21 [2020-10-11 15:58:15,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:58:15,061 INFO L481 AbstractCegarLoop]: Abstraction has 1965 states and 7429 transitions. [2020-10-11 15:58:15,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-11 15:58:15,062 INFO L276 IsEmpty]: Start isEmpty. Operand 1965 states and 7429 transitions. [2020-10-11 15:58:15,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-11 15:58:15,064 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:58:15,064 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:58:15,064 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-11 15:58:15,064 INFO L429 AbstractCegarLoop]: === Iteration 18 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-11 15:58:15,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:58:15,065 INFO L82 PathProgramCache]: Analyzing trace with hash -1788555247, now seen corresponding path program 1 times [2020-10-11 15:58:15,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:58:15,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956939874] [2020-10-11 15:58:15,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:58:15,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-11 15:58:15,073 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-11 15:58:15,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-11 15:58:15,080 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-11 15:58:15,087 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-11 15:58:15,087 INFO L519 BasicCegarLoop]: Counterexample might be feasible [2020-10-11 15:58:15,087 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-11 15:58:15,088 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-11 15:58:15,088 WARN L371 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-11 15:58:15,088 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-10-11 15:58:15,101 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,102 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,102 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,102 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,102 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,102 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,102 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,102 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,103 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,103 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,103 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,103 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,103 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,103 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,103 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,105 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,105 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,105 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,105 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,105 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,105 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,106 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,106 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,106 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,106 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,106 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,106 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,107 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,107 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,107 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,107 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,107 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,107 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,107 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,108 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,108 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,108 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,108 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,108 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,108 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,109 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,109 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,109 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,109 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,109 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,109 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,110 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,110 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,110 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,110 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,110 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,110 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,110 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,111 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,111 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,111 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,111 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,111 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,111 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,111 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,112 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,112 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,112 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,112 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,112 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,112 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,113 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,113 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,113 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,113 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,113 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,113 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,113 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,114 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,114 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,114 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,114 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,114 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,114 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,115 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,115 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,115 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,115 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,115 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,115 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,116 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,116 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,117 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,117 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,117 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,122 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,123 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,123 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,123 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,123 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,133 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,133 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,133 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,133 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,134 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,135 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,135 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,135 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,135 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,135 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,136 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,137 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,137 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,137 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,137 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,138 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,138 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,138 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,138 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,139 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,139 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,140 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,140 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,140 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,140 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,140 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,141 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,142 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,142 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,142 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,142 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,142 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,142 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,143 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,144 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,144 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,144 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,144 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,144 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,145 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,145 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,146 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,146 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,146 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,146 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:58:15,147 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-10-11 15:58:15,147 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 15:58:15,147 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-11 15:58:15,148 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 15:58:15,148 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 15:58:15,148 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 15:58:15,148 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 15:58:15,148 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 15:58:15,148 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 15:58:15,151 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-11 15:58:15,151 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 137 places, 122 transitions, 334 flow [2020-10-11 15:58:15,151 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 137 places, 122 transitions, 334 flow [2020-10-11 15:58:15,151 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 137 places, 122 transitions, 334 flow [2020-10-11 15:58:15,194 INFO L129 PetriNetUnfolder]: 8/152 cut-off events. [2020-10-11 15:58:15,194 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-10-11 15:58:15,199 INFO L80 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 152 events. 8/152 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 251 event pairs, 0 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 179. Up to 12 conditions per place. [2020-10-11 15:58:15,204 INFO L117 LiptonReduction]: Number of co-enabled transitions 2264 [2020-10-11 15:58:16,829 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-10-11 15:58:17,063 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 58 [2020-10-11 15:58:17,274 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2020-10-11 15:58:17,346 INFO L132 LiptonReduction]: Checked pairs total: 4038 [2020-10-11 15:58:17,346 INFO L134 LiptonReduction]: Total number of compositions: 111 [2020-10-11 15:58:17,346 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 61 places, 39 transitions, 168 flow [2020-10-11 15:58:17,834 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 6191 states. [2020-10-11 15:58:17,835 INFO L276 IsEmpty]: Start isEmpty. Operand 6191 states. [2020-10-11 15:58:17,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-11 15:58:17,835 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:58:17,835 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-11 15:58:17,835 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:58:17,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:58:17,836 INFO L82 PathProgramCache]: Analyzing trace with hash 1026170, now seen corresponding path program 1 times [2020-10-11 15:58:17,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:58:17,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83336950] [2020-10-11 15:58:17,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:58:17,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:58:17,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:58:17,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83336950] [2020-10-11 15:58:17,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:58:17,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-11 15:58:17,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862302318] [2020-10-11 15:58:17,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 15:58:17,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:58:17,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 15:58:17,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 15:58:17,856 INFO L87 Difference]: Start difference. First operand 6191 states. Second operand 3 states. [2020-10-11 15:58:17,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:58:17,920 INFO L93 Difference]: Finished difference Result 5844 states and 26316 transitions. [2020-10-11 15:58:17,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 15:58:17,921 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-11 15:58:17,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:58:17,939 INFO L225 Difference]: With dead ends: 5844 [2020-10-11 15:58:17,939 INFO L226 Difference]: Without dead ends: 5479 [2020-10-11 15:58:17,940 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 15:58:18,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5479 states. [2020-10-11 15:58:18,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5479 to 5479. [2020-10-11 15:58:18,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5479 states. [2020-10-11 15:58:18,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5479 states to 5479 states and 24493 transitions. [2020-10-11 15:58:18,106 INFO L78 Accepts]: Start accepts. Automaton has 5479 states and 24493 transitions. Word has length 3 [2020-10-11 15:58:18,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:58:18,106 INFO L481 AbstractCegarLoop]: Abstraction has 5479 states and 24493 transitions. [2020-10-11 15:58:18,106 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 15:58:18,106 INFO L276 IsEmpty]: Start isEmpty. Operand 5479 states and 24493 transitions. [2020-10-11 15:58:18,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-11 15:58:18,106 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:58:18,106 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:58:18,106 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-11 15:58:18,107 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:58:18,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:58:18,107 INFO L82 PathProgramCache]: Analyzing trace with hash -1344335463, now seen corresponding path program 1 times [2020-10-11 15:58:18,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:58:18,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425998791] [2020-10-11 15:58:18,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:58:18,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:58:18,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:58:18,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425998791] [2020-10-11 15:58:18,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:58:18,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 15:58:18,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211598300] [2020-10-11 15:58:18,133 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-11 15:58:18,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:58:18,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-11 15:58:18,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-11 15:58:18,134 INFO L87 Difference]: Start difference. First operand 5479 states and 24493 transitions. Second operand 5 states. [2020-10-11 15:58:18,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:58:18,292 INFO L93 Difference]: Finished difference Result 9673 states and 40333 transitions. [2020-10-11 15:58:18,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-11 15:58:18,293 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-11 15:58:18,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:58:18,315 INFO L225 Difference]: With dead ends: 9673 [2020-10-11 15:58:18,315 INFO L226 Difference]: Without dead ends: 9666 [2020-10-11 15:58:18,315 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-11 15:58:18,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9666 states. [2020-10-11 15:58:18,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9666 to 6331. [2020-10-11 15:58:18,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6331 states. [2020-10-11 15:58:18,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6331 states to 6331 states and 28544 transitions. [2020-10-11 15:58:18,533 INFO L78 Accepts]: Start accepts. Automaton has 6331 states and 28544 transitions. Word has length 9 [2020-10-11 15:58:18,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:58:18,533 INFO L481 AbstractCegarLoop]: Abstraction has 6331 states and 28544 transitions. [2020-10-11 15:58:18,533 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-11 15:58:18,533 INFO L276 IsEmpty]: Start isEmpty. Operand 6331 states and 28544 transitions. [2020-10-11 15:58:18,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 15:58:18,533 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:58:18,533 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:58:18,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-11 15:58:18,534 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:58:18,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:58:18,534 INFO L82 PathProgramCache]: Analyzing trace with hash 1513378118, now seen corresponding path program 1 times [2020-10-11 15:58:18,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:58:18,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428880840] [2020-10-11 15:58:18,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:58:18,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:58:18,568 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-11 15:58:18,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428880840] [2020-10-11 15:58:18,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:58:18,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 15:58:18,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284603607] [2020-10-11 15:58:18,569 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-11 15:58:18,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:58:18,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-11 15:58:18,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-11 15:58:18,570 INFO L87 Difference]: Start difference. First operand 6331 states and 28544 transitions. Second operand 5 states. [2020-10-11 15:58:18,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:58:18,712 INFO L93 Difference]: Finished difference Result 11081 states and 46826 transitions. [2020-10-11 15:58:18,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-11 15:58:18,713 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-11 15:58:18,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:58:18,738 INFO L225 Difference]: With dead ends: 11081 [2020-10-11 15:58:18,738 INFO L226 Difference]: Without dead ends: 11068 [2020-10-11 15:58:18,738 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-11 15:58:18,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11068 states. [2020-10-11 15:58:19,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11068 to 7391. [2020-10-11 15:58:19,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7391 states. [2020-10-11 15:58:19,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7391 states to 7391 states and 33694 transitions. [2020-10-11 15:58:19,132 INFO L78 Accepts]: Start accepts. Automaton has 7391 states and 33694 transitions. Word has length 13 [2020-10-11 15:58:19,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:58:19,132 INFO L481 AbstractCegarLoop]: Abstraction has 7391 states and 33694 transitions. [2020-10-11 15:58:19,132 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-11 15:58:19,132 INFO L276 IsEmpty]: Start isEmpty. Operand 7391 states and 33694 transitions. [2020-10-11 15:58:19,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-11 15:58:19,133 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:58:19,133 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:58:19,133 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-11 15:58:19,133 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:58:19,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:58:19,133 INFO L82 PathProgramCache]: Analyzing trace with hash -1678648171, now seen corresponding path program 1 times [2020-10-11 15:58:19,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:58:19,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544200671] [2020-10-11 15:58:19,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:58:19,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:58:19,184 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:58:19,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544200671] [2020-10-11 15:58:19,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059769503] [2020-10-11 15:58:19,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 15:58:19,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:58:19,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-11 15:58:19,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 15:58:19,328 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:58:19,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 15:58:19,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-11 15:58:19,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138198730] [2020-10-11 15:58:19,329 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-11 15:58:19,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:58:19,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-11 15:58:19,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-11 15:58:19,330 INFO L87 Difference]: Start difference. First operand 7391 states and 33694 transitions. Second operand 12 states. [2020-10-11 15:58:19,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:58:19,698 INFO L93 Difference]: Finished difference Result 16749 states and 66010 transitions. [2020-10-11 15:58:19,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 15:58:19,698 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-11 15:58:19,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:58:19,736 INFO L225 Difference]: With dead ends: 16749 [2020-10-11 15:58:19,736 INFO L226 Difference]: Without dead ends: 16736 [2020-10-11 15:58:19,736 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-11 15:58:19,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16736 states. [2020-10-11 15:58:19,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16736 to 7303. [2020-10-11 15:58:19,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7303 states. [2020-10-11 15:58:20,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7303 states to 7303 states and 33260 transitions. [2020-10-11 15:58:20,011 INFO L78 Accepts]: Start accepts. Automaton has 7303 states and 33260 transitions. Word has length 15 [2020-10-11 15:58:20,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:58:20,011 INFO L481 AbstractCegarLoop]: Abstraction has 7303 states and 33260 transitions. [2020-10-11 15:58:20,011 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-11 15:58:20,011 INFO L276 IsEmpty]: Start isEmpty. Operand 7303 states and 33260 transitions. [2020-10-11 15:58:20,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-11 15:58:20,012 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:58:20,012 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:58:20,212 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 15:58:20,213 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:58:20,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:58:20,213 INFO L82 PathProgramCache]: Analyzing trace with hash -1637555113, now seen corresponding path program 2 times [2020-10-11 15:58:20,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:58:20,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302158979] [2020-10-11 15:58:20,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:58:20,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:58:20,258 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-11 15:58:20,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302158979] [2020-10-11 15:58:20,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:58:20,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-11 15:58:20,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195182227] [2020-10-11 15:58:20,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 15:58:20,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:58:20,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 15:58:20,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-11 15:58:20,259 INFO L87 Difference]: Start difference. First operand 7303 states and 33260 transitions. Second operand 7 states. [2020-10-11 15:58:20,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:58:20,594 INFO L93 Difference]: Finished difference Result 17085 states and 67393 transitions. [2020-10-11 15:58:20,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 15:58:20,594 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-11 15:58:20,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:58:20,632 INFO L225 Difference]: With dead ends: 17085 [2020-10-11 15:58:20,632 INFO L226 Difference]: Without dead ends: 17071 [2020-10-11 15:58:20,633 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-11 15:58:20,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17071 states. [2020-10-11 15:58:21,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17071 to 7048. [2020-10-11 15:58:21,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7048 states. [2020-10-11 15:58:21,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7048 states to 7048 states and 32136 transitions. [2020-10-11 15:58:21,096 INFO L78 Accepts]: Start accepts. Automaton has 7048 states and 32136 transitions. Word has length 15 [2020-10-11 15:58:21,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:58:21,096 INFO L481 AbstractCegarLoop]: Abstraction has 7048 states and 32136 transitions. [2020-10-11 15:58:21,096 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 15:58:21,096 INFO L276 IsEmpty]: Start isEmpty. Operand 7048 states and 32136 transitions. [2020-10-11 15:58:21,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-11 15:58:21,097 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:58:21,097 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:58:21,097 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-11 15:58:21,097 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:58:21,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:58:21,098 INFO L82 PathProgramCache]: Analyzing trace with hash -288445665, now seen corresponding path program 1 times [2020-10-11 15:58:21,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:58:21,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890998113] [2020-10-11 15:58:21,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:58:21,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:58:21,139 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-11 15:58:21,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890998113] [2020-10-11 15:58:21,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:58:21,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 15:58:21,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106649599] [2020-10-11 15:58:21,140 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-11 15:58:21,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:58:21,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-11 15:58:21,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-11 15:58:21,141 INFO L87 Difference]: Start difference. First operand 7048 states and 32136 transitions. Second operand 5 states. [2020-10-11 15:58:21,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:58:21,297 INFO L93 Difference]: Finished difference Result 12234 states and 52488 transitions. [2020-10-11 15:58:21,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-11 15:58:21,297 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-11 15:58:21,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:58:21,325 INFO L225 Difference]: With dead ends: 12234 [2020-10-11 15:58:21,325 INFO L226 Difference]: Without dead ends: 12212 [2020-10-11 15:58:21,326 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-11 15:58:21,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12212 states. [2020-10-11 15:58:21,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12212 to 8342. [2020-10-11 15:58:21,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8342 states. [2020-10-11 15:58:21,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8342 states to 8342 states and 38278 transitions. [2020-10-11 15:58:21,561 INFO L78 Accepts]: Start accepts. Automaton has 8342 states and 38278 transitions. Word has length 17 [2020-10-11 15:58:21,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:58:21,561 INFO L481 AbstractCegarLoop]: Abstraction has 8342 states and 38278 transitions. [2020-10-11 15:58:21,561 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-11 15:58:21,562 INFO L276 IsEmpty]: Start isEmpty. Operand 8342 states and 38278 transitions. [2020-10-11 15:58:21,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-11 15:58:21,562 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:58:21,563 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:58:21,563 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-11 15:58:21,563 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:58:21,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:58:21,563 INFO L82 PathProgramCache]: Analyzing trace with hash -1255672082, now seen corresponding path program 1 times [2020-10-11 15:58:21,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:58:21,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619935428] [2020-10-11 15:58:21,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:58:21,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:58:21,609 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-11 15:58:21,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619935428] [2020-10-11 15:58:21,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092055958] [2020-10-11 15:58:21,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 15:58:21,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:58:21,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-11 15:58:21,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 15:58:21,745 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-11 15:58:21,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 15:58:21,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-11 15:58:21,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002795565] [2020-10-11 15:58:21,746 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-11 15:58:21,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:58:21,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-11 15:58:21,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-11 15:58:21,747 INFO L87 Difference]: Start difference. First operand 8342 states and 38278 transitions. Second operand 12 states. [2020-10-11 15:58:22,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:58:22,098 INFO L93 Difference]: Finished difference Result 19016 states and 76191 transitions. [2020-10-11 15:58:22,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 15:58:22,099 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-10-11 15:58:22,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:58:22,142 INFO L225 Difference]: With dead ends: 19016 [2020-10-11 15:58:22,142 INFO L226 Difference]: Without dead ends: 18998 [2020-10-11 15:58:22,142 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-11 15:58:22,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18998 states. [2020-10-11 15:58:23,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18998 to 8452. [2020-10-11 15:58:23,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8452 states. [2020-10-11 15:58:23,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8452 states to 8452 states and 38704 transitions. [2020-10-11 15:58:23,388 INFO L78 Accepts]: Start accepts. Automaton has 8452 states and 38704 transitions. Word has length 19 [2020-10-11 15:58:23,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:58:23,388 INFO L481 AbstractCegarLoop]: Abstraction has 8452 states and 38704 transitions. [2020-10-11 15:58:23,388 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-11 15:58:23,388 INFO L276 IsEmpty]: Start isEmpty. Operand 8452 states and 38704 transitions. [2020-10-11 15:58:23,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-11 15:58:23,390 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:58:23,390 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:58:23,603 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-10-11 15:58:23,604 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:58:23,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:58:23,604 INFO L82 PathProgramCache]: Analyzing trace with hash 402059005, now seen corresponding path program 1 times [2020-10-11 15:58:23,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:58:23,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396257943] [2020-10-11 15:58:23,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:58:23,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:58:23,650 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-11 15:58:23,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396257943] [2020-10-11 15:58:23,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252741535] [2020-10-11 15:58:23,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 15:58:23,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:58:23,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-11 15:58:23,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 15:58:23,786 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-11 15:58:23,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 15:58:23,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-11 15:58:23,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806237378] [2020-10-11 15:58:23,787 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-11 15:58:23,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:58:23,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-11 15:58:23,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-11 15:58:23,787 INFO L87 Difference]: Start difference. First operand 8452 states and 38704 transitions. Second operand 12 states. [2020-10-11 15:58:24,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:58:24,213 INFO L93 Difference]: Finished difference Result 19670 states and 79028 transitions. [2020-10-11 15:58:24,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 15:58:24,216 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-10-11 15:58:24,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:58:24,296 INFO L225 Difference]: With dead ends: 19670 [2020-10-11 15:58:24,296 INFO L226 Difference]: Without dead ends: 19645 [2020-10-11 15:58:24,297 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-11 15:58:24,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19645 states. [2020-10-11 15:58:24,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19645 to 8480. [2020-10-11 15:58:24,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8480 states. [2020-10-11 15:58:24,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8480 states to 8480 states and 38825 transitions. [2020-10-11 15:58:24,663 INFO L78 Accepts]: Start accepts. Automaton has 8480 states and 38825 transitions. Word has length 19 [2020-10-11 15:58:24,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:58:24,663 INFO L481 AbstractCegarLoop]: Abstraction has 8480 states and 38825 transitions. [2020-10-11 15:58:24,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-11 15:58:24,663 INFO L276 IsEmpty]: Start isEmpty. Operand 8480 states and 38825 transitions. [2020-10-11 15:58:24,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-11 15:58:24,664 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:58:24,664 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:58:24,877 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-10-11 15:58:24,878 INFO L429 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:58:24,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:58:24,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1976597437, now seen corresponding path program 2 times [2020-10-11 15:58:24,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:58:24,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580822683] [2020-10-11 15:58:24,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:58:24,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:58:24,926 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-11 15:58:24,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580822683] [2020-10-11 15:58:24,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:58:24,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-11 15:58:24,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605400189] [2020-10-11 15:58:24,927 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 15:58:24,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:58:24,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 15:58:24,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-11 15:58:24,927 INFO L87 Difference]: Start difference. First operand 8480 states and 38825 transitions. Second operand 7 states. [2020-10-11 15:58:25,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:58:25,371 INFO L93 Difference]: Finished difference Result 19852 states and 79846 transitions. [2020-10-11 15:58:25,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 15:58:25,371 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-11 15:58:25,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:58:25,439 INFO L225 Difference]: With dead ends: 19852 [2020-10-11 15:58:25,440 INFO L226 Difference]: Without dead ends: 19827 [2020-10-11 15:58:25,441 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-11 15:58:25,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19827 states. [2020-10-11 15:58:25,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19827 to 8379. [2020-10-11 15:58:25,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8379 states. [2020-10-11 15:58:26,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8379 states to 8379 states and 38406 transitions. [2020-10-11 15:58:26,188 INFO L78 Accepts]: Start accepts. Automaton has 8379 states and 38406 transitions. Word has length 19 [2020-10-11 15:58:26,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:58:26,188 INFO L481 AbstractCegarLoop]: Abstraction has 8379 states and 38406 transitions. [2020-10-11 15:58:26,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 15:58:26,188 INFO L276 IsEmpty]: Start isEmpty. Operand 8379 states and 38406 transitions. [2020-10-11 15:58:26,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-11 15:58:26,190 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:58:26,190 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:58:26,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-11 15:58:26,191 INFO L429 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:58:26,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:58:26,191 INFO L82 PathProgramCache]: Analyzing trace with hash 1976577008, now seen corresponding path program 2 times [2020-10-11 15:58:26,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:58:26,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023061880] [2020-10-11 15:58:26,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:58:26,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:58:26,249 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-11 15:58:26,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023061880] [2020-10-11 15:58:26,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:58:26,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-11 15:58:26,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485360634] [2020-10-11 15:58:26,250 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 15:58:26,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:58:26,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 15:58:26,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-11 15:58:26,251 INFO L87 Difference]: Start difference. First operand 8379 states and 38406 transitions. Second operand 7 states. [2020-10-11 15:58:26,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:58:26,595 INFO L93 Difference]: Finished difference Result 19555 states and 78564 transitions. [2020-10-11 15:58:26,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 15:58:26,595 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-11 15:58:26,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:58:26,639 INFO L225 Difference]: With dead ends: 19555 [2020-10-11 15:58:26,639 INFO L226 Difference]: Without dead ends: 19530 [2020-10-11 15:58:26,639 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-11 15:58:26,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19530 states. [2020-10-11 15:58:26,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19530 to 8317. [2020-10-11 15:58:26,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8317 states. [2020-10-11 15:58:26,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8317 states to 8317 states and 38184 transitions. [2020-10-11 15:58:26,956 INFO L78 Accepts]: Start accepts. Automaton has 8317 states and 38184 transitions. Word has length 19 [2020-10-11 15:58:26,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:58:26,957 INFO L481 AbstractCegarLoop]: Abstraction has 8317 states and 38184 transitions. [2020-10-11 15:58:26,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 15:58:26,957 INFO L276 IsEmpty]: Start isEmpty. Operand 8317 states and 38184 transitions. [2020-10-11 15:58:26,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-11 15:58:26,958 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:58:26,958 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:58:26,958 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-11 15:58:26,958 INFO L429 AbstractCegarLoop]: === Iteration 11 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:58:26,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:58:26,959 INFO L82 PathProgramCache]: Analyzing trace with hash -1389591796, now seen corresponding path program 1 times [2020-10-11 15:58:26,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:58:26,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395184974] [2020-10-11 15:58:26,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:58:26,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:58:27,022 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:58:27,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395184974] [2020-10-11 15:58:27,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628208793] [2020-10-11 15:58:27,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 15:58:27,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:58:27,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 15:58:27,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 15:58:27,241 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:58:27,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 15:58:27,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-11 15:58:27,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328815352] [2020-10-11 15:58:27,242 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-11 15:58:27,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:58:27,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-11 15:58:27,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-11 15:58:27,245 INFO L87 Difference]: Start difference. First operand 8317 states and 38184 transitions. Second operand 16 states. [2020-10-11 15:58:28,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:58:28,200 INFO L93 Difference]: Finished difference Result 26969 states and 101544 transitions. [2020-10-11 15:58:28,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 15:58:28,200 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-11 15:58:28,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:58:28,260 INFO L225 Difference]: With dead ends: 26969 [2020-10-11 15:58:28,260 INFO L226 Difference]: Without dead ends: 26957 [2020-10-11 15:58:28,261 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-11 15:58:28,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26957 states. [2020-10-11 15:58:28,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26957 to 8204. [2020-10-11 15:58:28,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8204 states. [2020-10-11 15:58:28,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8204 states to 8204 states and 37628 transitions. [2020-10-11 15:58:28,820 INFO L78 Accepts]: Start accepts. Automaton has 8204 states and 37628 transitions. Word has length 21 [2020-10-11 15:58:28,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:58:28,821 INFO L481 AbstractCegarLoop]: Abstraction has 8204 states and 37628 transitions. [2020-10-11 15:58:28,821 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-11 15:58:28,821 INFO L276 IsEmpty]: Start isEmpty. Operand 8204 states and 37628 transitions. [2020-10-11 15:58:28,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-11 15:58:28,822 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:58:28,822 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:58:29,022 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 15:58:29,022 INFO L429 AbstractCegarLoop]: === Iteration 12 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:58:29,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:58:29,023 INFO L82 PathProgramCache]: Analyzing trace with hash 184946636, now seen corresponding path program 2 times [2020-10-11 15:58:29,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:58:29,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964995082] [2020-10-11 15:58:29,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:58:29,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:58:29,093 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-11 15:58:29,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964995082] [2020-10-11 15:58:29,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524570130] [2020-10-11 15:58:29,094 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 15:58:29,168 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 15:58:29,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 15:58:29,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 15:58:29,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 15:58:29,272 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-11 15:58:29,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 15:58:29,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-11 15:58:29,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595191100] [2020-10-11 15:58:29,273 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-11 15:58:29,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:58:29,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-11 15:58:29,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-11 15:58:29,274 INFO L87 Difference]: Start difference. First operand 8204 states and 37628 transitions. Second operand 16 states. [2020-10-11 15:58:30,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:58:30,205 INFO L93 Difference]: Finished difference Result 26661 states and 100277 transitions. [2020-10-11 15:58:30,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 15:58:30,205 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-11 15:58:30,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:58:30,264 INFO L225 Difference]: With dead ends: 26661 [2020-10-11 15:58:30,264 INFO L226 Difference]: Without dead ends: 26645 [2020-10-11 15:58:30,265 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-11 15:58:30,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26645 states. [2020-10-11 15:58:30,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26645 to 8091. [2020-10-11 15:58:30,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8091 states. [2020-10-11 15:58:30,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8091 states to 8091 states and 37076 transitions. [2020-10-11 15:58:30,632 INFO L78 Accepts]: Start accepts. Automaton has 8091 states and 37076 transitions. Word has length 21 [2020-10-11 15:58:30,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:58:30,632 INFO L481 AbstractCegarLoop]: Abstraction has 8091 states and 37076 transitions. [2020-10-11 15:58:30,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-11 15:58:30,633 INFO L276 IsEmpty]: Start isEmpty. Operand 8091 states and 37076 transitions. [2020-10-11 15:58:30,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-11 15:58:30,634 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:58:30,634 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:58:30,834 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2020-10-11 15:58:30,834 INFO L429 AbstractCegarLoop]: === Iteration 13 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:58:30,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:58:30,835 INFO L82 PathProgramCache]: Analyzing trace with hash -231570740, now seen corresponding path program 3 times [2020-10-11 15:58:30,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:58:30,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598236414] [2020-10-11 15:58:30,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:58:30,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:58:30,892 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-11 15:58:30,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598236414] [2020-10-11 15:58:30,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209663183] [2020-10-11 15:58:30,892 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 15:58:30,978 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-11 15:58:30,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 15:58:30,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 15:58:30,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 15:58:31,111 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-11 15:58:31,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 15:58:31,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-11 15:58:31,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699014708] [2020-10-11 15:58:31,112 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-11 15:58:31,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:58:31,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-11 15:58:31,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-11 15:58:31,113 INFO L87 Difference]: Start difference. First operand 8091 states and 37076 transitions. Second operand 16 states. [2020-10-11 15:58:32,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:58:32,207 INFO L93 Difference]: Finished difference Result 26686 states and 100402 transitions. [2020-10-11 15:58:32,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 15:58:32,207 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-11 15:58:32,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:58:32,274 INFO L225 Difference]: With dead ends: 26686 [2020-10-11 15:58:32,274 INFO L226 Difference]: Without dead ends: 26674 [2020-10-11 15:58:32,275 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-11 15:58:32,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26674 states. [2020-10-11 15:58:32,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26674 to 7861. [2020-10-11 15:58:32,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7861 states. [2020-10-11 15:58:32,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7861 states to 7861 states and 36066 transitions. [2020-10-11 15:58:32,630 INFO L78 Accepts]: Start accepts. Automaton has 7861 states and 36066 transitions. Word has length 21 [2020-10-11 15:58:32,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:58:32,630 INFO L481 AbstractCegarLoop]: Abstraction has 7861 states and 36066 transitions. [2020-10-11 15:58:32,630 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-11 15:58:32,630 INFO L276 IsEmpty]: Start isEmpty. Operand 7861 states and 36066 transitions. [2020-10-11 15:58:32,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-11 15:58:32,631 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:58:32,631 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:58:32,832 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 15:58:32,832 INFO L429 AbstractCegarLoop]: === Iteration 14 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:58:32,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:58:32,833 INFO L82 PathProgramCache]: Analyzing trace with hash -168366002, now seen corresponding path program 4 times [2020-10-11 15:58:32,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:58:32,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211719716] [2020-10-11 15:58:32,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:58:32,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:58:32,904 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-11 15:58:32,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211719716] [2020-10-11 15:58:32,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881734946] [2020-10-11 15:58:32,905 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 15:58:32,975 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 15:58:32,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 15:58:32,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 15:58:32,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 15:58:33,086 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-11 15:58:33,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 15:58:33,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-11 15:58:33,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814828996] [2020-10-11 15:58:33,087 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-11 15:58:33,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:58:33,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-11 15:58:33,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-11 15:58:33,088 INFO L87 Difference]: Start difference. First operand 7861 states and 36066 transitions. Second operand 16 states. [2020-10-11 15:58:34,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:58:34,081 INFO L93 Difference]: Finished difference Result 26489 states and 99650 transitions. [2020-10-11 15:58:34,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 15:58:34,082 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-11 15:58:34,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:58:34,149 INFO L225 Difference]: With dead ends: 26489 [2020-10-11 15:58:34,149 INFO L226 Difference]: Without dead ends: 26473 [2020-10-11 15:58:34,150 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-11 15:58:34,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26473 states. [2020-10-11 15:58:34,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26473 to 7748. [2020-10-11 15:58:34,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7748 states. [2020-10-11 15:58:34,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7748 states to 7748 states and 35514 transitions. [2020-10-11 15:58:34,512 INFO L78 Accepts]: Start accepts. Automaton has 7748 states and 35514 transitions. Word has length 21 [2020-10-11 15:58:34,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:58:34,512 INFO L481 AbstractCegarLoop]: Abstraction has 7748 states and 35514 transitions. [2020-10-11 15:58:34,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-11 15:58:34,513 INFO L276 IsEmpty]: Start isEmpty. Operand 7748 states and 35514 transitions. [2020-10-11 15:58:34,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-11 15:58:34,514 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:58:34,514 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:58:34,714 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2020-10-11 15:58:34,715 INFO L429 AbstractCegarLoop]: === Iteration 15 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:58:34,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:58:34,715 INFO L82 PathProgramCache]: Analyzing trace with hash 210203517, now seen corresponding path program 1 times [2020-10-11 15:58:34,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:58:34,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188384375] [2020-10-11 15:58:34,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:58:34,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:58:34,766 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-11 15:58:34,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188384375] [2020-10-11 15:58:34,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:58:34,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 15:58:34,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363635444] [2020-10-11 15:58:34,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-11 15:58:34,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:58:34,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-11 15:58:34,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-11 15:58:34,768 INFO L87 Difference]: Start difference. First operand 7748 states and 35514 transitions. Second operand 5 states. [2020-10-11 15:58:34,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:58:34,946 INFO L93 Difference]: Finished difference Result 13251 states and 57501 transitions. [2020-10-11 15:58:34,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-11 15:58:34,946 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-11 15:58:34,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:58:34,992 INFO L225 Difference]: With dead ends: 13251 [2020-10-11 15:58:34,993 INFO L226 Difference]: Without dead ends: 13220 [2020-10-11 15:58:34,994 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-11 15:58:35,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13220 states. [2020-10-11 15:58:35,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13220 to 9255. [2020-10-11 15:58:35,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9255 states. [2020-10-11 15:58:35,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9255 states to 9255 states and 42368 transitions. [2020-10-11 15:58:35,595 INFO L78 Accepts]: Start accepts. Automaton has 9255 states and 42368 transitions. Word has length 21 [2020-10-11 15:58:35,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:58:35,596 INFO L481 AbstractCegarLoop]: Abstraction has 9255 states and 42368 transitions. [2020-10-11 15:58:35,596 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-11 15:58:35,596 INFO L276 IsEmpty]: Start isEmpty. Operand 9255 states and 42368 transitions. [2020-10-11 15:58:35,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-11 15:58:35,597 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:58:35,597 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:58:35,597 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-11 15:58:35,598 INFO L429 AbstractCegarLoop]: === Iteration 16 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:58:35,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:58:35,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1134578958, now seen corresponding path program 5 times [2020-10-11 15:58:35,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:58:35,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378279227] [2020-10-11 15:58:35,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:58:35,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:58:35,678 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-11 15:58:35,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378279227] [2020-10-11 15:58:35,679 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:58:35,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 15:58:35,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119627283] [2020-10-11 15:58:35,679 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-11 15:58:35,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:58:35,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-11 15:58:35,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-11 15:58:35,680 INFO L87 Difference]: Start difference. First operand 9255 states and 42368 transitions. Second operand 9 states. [2020-10-11 15:58:36,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:58:36,491 INFO L93 Difference]: Finished difference Result 29788 states and 113841 transitions. [2020-10-11 15:58:36,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 15:58:36,492 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-11 15:58:36,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:58:36,556 INFO L225 Difference]: With dead ends: 29788 [2020-10-11 15:58:36,556 INFO L226 Difference]: Without dead ends: 29770 [2020-10-11 15:58:36,557 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-11 15:58:36,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29770 states. [2020-10-11 15:58:36,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29770 to 8964. [2020-10-11 15:58:36,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8964 states. [2020-10-11 15:58:36,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8964 states to 8964 states and 41031 transitions. [2020-10-11 15:58:36,981 INFO L78 Accepts]: Start accepts. Automaton has 8964 states and 41031 transitions. Word has length 21 [2020-10-11 15:58:36,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:58:36,982 INFO L481 AbstractCegarLoop]: Abstraction has 8964 states and 41031 transitions. [2020-10-11 15:58:36,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-11 15:58:36,982 INFO L276 IsEmpty]: Start isEmpty. Operand 8964 states and 41031 transitions. [2020-10-11 15:58:36,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-11 15:58:36,983 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:58:36,983 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:58:36,984 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-11 15:58:36,984 INFO L429 AbstractCegarLoop]: === Iteration 17 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:58:36,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:58:36,984 INFO L82 PathProgramCache]: Analyzing trace with hash 1114967118, now seen corresponding path program 6 times [2020-10-11 15:58:36,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:58:36,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387255668] [2020-10-11 15:58:36,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:58:36,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:58:37,053 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-11 15:58:37,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387255668] [2020-10-11 15:58:37,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:58:37,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 15:58:37,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993385519] [2020-10-11 15:58:37,054 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-11 15:58:37,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:58:37,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-11 15:58:37,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-11 15:58:37,055 INFO L87 Difference]: Start difference. First operand 8964 states and 41031 transitions. Second operand 9 states. [2020-10-11 15:58:37,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:58:37,944 INFO L93 Difference]: Finished difference Result 29379 states and 112099 transitions. [2020-10-11 15:58:37,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 15:58:37,945 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-11 15:58:37,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:58:38,011 INFO L225 Difference]: With dead ends: 29379 [2020-10-11 15:58:38,011 INFO L226 Difference]: Without dead ends: 29356 [2020-10-11 15:58:38,012 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-11 15:58:38,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29356 states. [2020-10-11 15:58:38,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29356 to 8573. [2020-10-11 15:58:38,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8573 states. [2020-10-11 15:58:38,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8573 states to 8573 states and 39353 transitions. [2020-10-11 15:58:38,451 INFO L78 Accepts]: Start accepts. Automaton has 8573 states and 39353 transitions. Word has length 21 [2020-10-11 15:58:38,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:58:38,451 INFO L481 AbstractCegarLoop]: Abstraction has 8573 states and 39353 transitions. [2020-10-11 15:58:38,451 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-11 15:58:38,451 INFO L276 IsEmpty]: Start isEmpty. Operand 8573 states and 39353 transitions. [2020-10-11 15:58:38,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-11 15:58:38,453 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:58:38,453 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:58:38,453 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-11 15:58:38,453 INFO L429 AbstractCegarLoop]: === Iteration 18 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:58:38,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:58:38,454 INFO L82 PathProgramCache]: Analyzing trace with hash 715669452, now seen corresponding path program 1 times [2020-10-11 15:58:38,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:58:38,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145250059] [2020-10-11 15:58:38,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:58:38,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:58:38,508 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-11 15:58:38,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145250059] [2020-10-11 15:58:38,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254575247] [2020-10-11 15:58:38,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 15:58:38,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:58:38,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-11 15:58:38,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 15:58:38,645 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-11 15:58:38,645 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 15:58:38,645 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-11 15:58:38,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659078029] [2020-10-11 15:58:38,646 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-11 15:58:38,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:58:38,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-11 15:58:38,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-11 15:58:38,646 INFO L87 Difference]: Start difference. First operand 8573 states and 39353 transitions. Second operand 12 states. [2020-10-11 15:58:39,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:58:39,120 INFO L93 Difference]: Finished difference Result 19727 states and 80274 transitions. [2020-10-11 15:58:39,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 15:58:39,121 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-10-11 15:58:39,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:58:39,164 INFO L225 Difference]: With dead ends: 19727 [2020-10-11 15:58:39,164 INFO L226 Difference]: Without dead ends: 19703 [2020-10-11 15:58:39,164 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-11 15:58:39,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19703 states. [2020-10-11 15:58:39,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19703 to 8847. [2020-10-11 15:58:39,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8847 states. [2020-10-11 15:58:39,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8847 states to 8847 states and 40495 transitions. [2020-10-11 15:58:39,477 INFO L78 Accepts]: Start accepts. Automaton has 8847 states and 40495 transitions. Word has length 23 [2020-10-11 15:58:39,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:58:39,477 INFO L481 AbstractCegarLoop]: Abstraction has 8847 states and 40495 transitions. [2020-10-11 15:58:39,477 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-11 15:58:39,477 INFO L276 IsEmpty]: Start isEmpty. Operand 8847 states and 40495 transitions. [2020-10-11 15:58:39,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-11 15:58:39,479 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:58:39,479 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:58:39,684 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2020-10-11 15:58:39,685 INFO L429 AbstractCegarLoop]: === Iteration 19 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:58:39,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:58:39,685 INFO L82 PathProgramCache]: Analyzing trace with hash 504272987, now seen corresponding path program 1 times [2020-10-11 15:58:39,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:58:39,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972021164] [2020-10-11 15:58:39,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:58:39,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:58:39,731 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-11 15:58:39,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972021164] [2020-10-11 15:58:39,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892660751] [2020-10-11 15:58:39,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 15:58:39,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:58:39,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-11 15:58:39,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 15:58:39,882 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-11 15:58:39,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 15:58:39,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-11 15:58:39,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876262932] [2020-10-11 15:58:39,883 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-11 15:58:39,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:58:39,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-11 15:58:39,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-11 15:58:39,883 INFO L87 Difference]: Start difference. First operand 8847 states and 40495 transitions. Second operand 12 states. [2020-10-11 15:58:40,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:58:40,310 INFO L93 Difference]: Finished difference Result 20694 states and 84261 transitions. [2020-10-11 15:58:40,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 15:58:40,311 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-10-11 15:58:40,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:58:40,363 INFO L225 Difference]: With dead ends: 20694 [2020-10-11 15:58:40,364 INFO L226 Difference]: Without dead ends: 20666 [2020-10-11 15:58:40,364 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-11 15:58:40,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20666 states. [2020-10-11 15:58:40,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20666 to 9115. [2020-10-11 15:58:40,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9115 states. [2020-10-11 15:58:40,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9115 states to 9115 states and 41679 transitions. [2020-10-11 15:58:40,709 INFO L78 Accepts]: Start accepts. Automaton has 9115 states and 41679 transitions. Word has length 23 [2020-10-11 15:58:40,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:58:40,709 INFO L481 AbstractCegarLoop]: Abstraction has 9115 states and 41679 transitions. [2020-10-11 15:58:40,709 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-11 15:58:40,709 INFO L276 IsEmpty]: Start isEmpty. Operand 9115 states and 41679 transitions. [2020-10-11 15:58:40,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-11 15:58:40,712 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:58:40,712 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:58:40,921 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 15:58:40,922 INFO L429 AbstractCegarLoop]: === Iteration 20 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:58:40,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:58:40,922 INFO L82 PathProgramCache]: Analyzing trace with hash 591685125, now seen corresponding path program 1 times [2020-10-11 15:58:40,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:58:40,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675796578] [2020-10-11 15:58:40,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:58:40,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:58:40,966 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-11 15:58:40,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675796578] [2020-10-11 15:58:40,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531192968] [2020-10-11 15:58:40,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 15:58:41,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:58:41,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-11 15:58:41,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 15:58:41,126 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-11 15:58:41,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 15:58:41,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-11 15:58:41,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785380424] [2020-10-11 15:58:41,127 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-11 15:58:41,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:58:41,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-11 15:58:41,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-11 15:58:41,127 INFO L87 Difference]: Start difference. First operand 9115 states and 41679 transitions. Second operand 12 states. [2020-10-11 15:58:41,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:58:41,549 INFO L93 Difference]: Finished difference Result 21396 states and 87360 transitions. [2020-10-11 15:58:41,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 15:58:41,550 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-10-11 15:58:41,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:58:41,597 INFO L225 Difference]: With dead ends: 21396 [2020-10-11 15:58:41,598 INFO L226 Difference]: Without dead ends: 21359 [2020-10-11 15:58:41,598 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-11 15:58:41,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21359 states. [2020-10-11 15:58:41,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21359 to 9320. [2020-10-11 15:58:41,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9320 states. [2020-10-11 15:58:41,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9320 states to 9320 states and 42648 transitions. [2020-10-11 15:58:41,934 INFO L78 Accepts]: Start accepts. Automaton has 9320 states and 42648 transitions. Word has length 23 [2020-10-11 15:58:41,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:58:41,934 INFO L481 AbstractCegarLoop]: Abstraction has 9320 states and 42648 transitions. [2020-10-11 15:58:41,934 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-11 15:58:41,934 INFO L276 IsEmpty]: Start isEmpty. Operand 9320 states and 42648 transitions. [2020-10-11 15:58:41,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-11 15:58:41,936 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:58:41,936 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:58:42,137 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2020-10-11 15:58:42,137 INFO L429 AbstractCegarLoop]: === Iteration 21 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:58:42,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:58:42,138 INFO L82 PathProgramCache]: Analyzing trace with hash 142124187, now seen corresponding path program 2 times [2020-10-11 15:58:42,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:58:42,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838317952] [2020-10-11 15:58:42,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:58:42,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:58:42,192 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-11 15:58:42,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838317952] [2020-10-11 15:58:42,192 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:58:42,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-11 15:58:42,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944944538] [2020-10-11 15:58:42,193 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 15:58:42,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:58:42,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 15:58:42,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-11 15:58:42,194 INFO L87 Difference]: Start difference. First operand 9320 states and 42648 transitions. Second operand 7 states. [2020-10-11 15:58:42,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:58:42,714 INFO L93 Difference]: Finished difference Result 21489 states and 87752 transitions. [2020-10-11 15:58:42,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 15:58:42,714 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-11 15:58:42,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:58:42,763 INFO L225 Difference]: With dead ends: 21489 [2020-10-11 15:58:42,763 INFO L226 Difference]: Without dead ends: 21452 [2020-10-11 15:58:42,763 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-11 15:58:42,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21452 states. [2020-10-11 15:58:43,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21452 to 9401. [2020-10-11 15:58:43,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9401 states. [2020-10-11 15:58:43,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9401 states to 9401 states and 43010 transitions. [2020-10-11 15:58:43,098 INFO L78 Accepts]: Start accepts. Automaton has 9401 states and 43010 transitions. Word has length 23 [2020-10-11 15:58:43,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:58:43,099 INFO L481 AbstractCegarLoop]: Abstraction has 9401 states and 43010 transitions. [2020-10-11 15:58:43,099 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 15:58:43,099 INFO L276 IsEmpty]: Start isEmpty. Operand 9401 states and 43010 transitions. [2020-10-11 15:58:43,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-11 15:58:43,101 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:58:43,101 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:58:43,101 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-11 15:58:43,101 INFO L429 AbstractCegarLoop]: === Iteration 22 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:58:43,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:58:43,102 INFO L82 PathProgramCache]: Analyzing trace with hash 142117429, now seen corresponding path program 2 times [2020-10-11 15:58:43,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:58:43,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026016258] [2020-10-11 15:58:43,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:58:43,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:58:43,147 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-11 15:58:43,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026016258] [2020-10-11 15:58:43,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:58:43,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-11 15:58:43,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446071059] [2020-10-11 15:58:43,148 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 15:58:43,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:58:43,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 15:58:43,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-11 15:58:43,149 INFO L87 Difference]: Start difference. First operand 9401 states and 43010 transitions. Second operand 7 states. [2020-10-11 15:58:43,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:58:43,533 INFO L93 Difference]: Finished difference Result 21198 states and 86437 transitions. [2020-10-11 15:58:43,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 15:58:43,534 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-11 15:58:43,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:58:43,581 INFO L225 Difference]: With dead ends: 21198 [2020-10-11 15:58:43,581 INFO L226 Difference]: Without dead ends: 21161 [2020-10-11 15:58:43,581 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-11 15:58:43,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21161 states. [2020-10-11 15:58:43,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21161 to 9396. [2020-10-11 15:58:43,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9396 states. [2020-10-11 15:58:43,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9396 states to 9396 states and 42985 transitions. [2020-10-11 15:58:43,919 INFO L78 Accepts]: Start accepts. Automaton has 9396 states and 42985 transitions. Word has length 23 [2020-10-11 15:58:43,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:58:43,919 INFO L481 AbstractCegarLoop]: Abstraction has 9396 states and 42985 transitions. [2020-10-11 15:58:43,920 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 15:58:43,920 INFO L276 IsEmpty]: Start isEmpty. Operand 9396 states and 42985 transitions. [2020-10-11 15:58:43,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-11 15:58:43,922 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:58:43,923 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:58:43,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-11 15:58:43,923 INFO L429 AbstractCegarLoop]: === Iteration 23 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:58:43,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:58:43,923 INFO L82 PathProgramCache]: Analyzing trace with hash 142103758, now seen corresponding path program 2 times [2020-10-11 15:58:43,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:58:43,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977669027] [2020-10-11 15:58:43,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:58:43,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:58:43,975 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-11 15:58:43,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977669027] [2020-10-11 15:58:43,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:58:43,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-11 15:58:43,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359499872] [2020-10-11 15:58:43,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 15:58:43,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:58:43,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 15:58:43,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-11 15:58:43,977 INFO L87 Difference]: Start difference. First operand 9396 states and 42985 transitions. Second operand 7 states. [2020-10-11 15:58:44,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:58:44,343 INFO L93 Difference]: Finished difference Result 21067 states and 85734 transitions. [2020-10-11 15:58:44,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 15:58:44,343 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-11 15:58:44,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:58:44,390 INFO L225 Difference]: With dead ends: 21067 [2020-10-11 15:58:44,390 INFO L226 Difference]: Without dead ends: 21030 [2020-10-11 15:58:44,391 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-11 15:58:44,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21030 states. [2020-10-11 15:58:44,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21030 to 9426. [2020-10-11 15:58:44,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9426 states. [2020-10-11 15:58:44,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9426 states to 9426 states and 43057 transitions. [2020-10-11 15:58:44,723 INFO L78 Accepts]: Start accepts. Automaton has 9426 states and 43057 transitions. Word has length 23 [2020-10-11 15:58:44,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:58:44,724 INFO L481 AbstractCegarLoop]: Abstraction has 9426 states and 43057 transitions. [2020-10-11 15:58:44,724 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 15:58:44,724 INFO L276 IsEmpty]: Start isEmpty. Operand 9426 states and 43057 transitions. [2020-10-11 15:58:44,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-11 15:58:44,727 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:58:44,727 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:58:44,727 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-11 15:58:44,727 INFO L429 AbstractCegarLoop]: === Iteration 24 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:58:44,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:58:44,727 INFO L82 PathProgramCache]: Analyzing trace with hash 925732074, now seen corresponding path program 1 times [2020-10-11 15:58:44,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:58:44,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058561906] [2020-10-11 15:58:44,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:58:44,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:58:44,801 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-11 15:58:44,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058561906] [2020-10-11 15:58:44,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758139481] [2020-10-11 15:58:44,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 15:58:44,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:58:44,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 15:58:44,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 15:58:44,981 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-11 15:58:44,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 15:58:44,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-11 15:58:44,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448396639] [2020-10-11 15:58:44,983 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-11 15:58:44,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:58:44,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-11 15:58:44,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-11 15:58:44,983 INFO L87 Difference]: Start difference. First operand 9426 states and 43057 transitions. Second operand 16 states. [2020-10-11 15:58:46,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:58:46,064 INFO L93 Difference]: Finished difference Result 30145 states and 115754 transitions. [2020-10-11 15:58:46,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 15:58:46,065 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-11 15:58:46,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:58:46,141 INFO L225 Difference]: With dead ends: 30145 [2020-10-11 15:58:46,141 INFO L226 Difference]: Without dead ends: 30125 [2020-10-11 15:58:46,142 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-11 15:58:46,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30125 states. [2020-10-11 15:58:46,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30125 to 9338. [2020-10-11 15:58:46,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9338 states. [2020-10-11 15:58:46,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9338 states to 9338 states and 42582 transitions. [2020-10-11 15:58:46,771 INFO L78 Accepts]: Start accepts. Automaton has 9338 states and 42582 transitions. Word has length 25 [2020-10-11 15:58:46,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:58:46,772 INFO L481 AbstractCegarLoop]: Abstraction has 9338 states and 42582 transitions. [2020-10-11 15:58:46,772 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-11 15:58:46,772 INFO L276 IsEmpty]: Start isEmpty. Operand 9338 states and 42582 transitions. [2020-10-11 15:58:46,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-11 15:58:46,774 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:58:46,775 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:58:46,975 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2020-10-11 15:58:46,975 INFO L429 AbstractCegarLoop]: === Iteration 25 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:58:46,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:58:46,976 INFO L82 PathProgramCache]: Analyzing trace with hash 1013144212, now seen corresponding path program 1 times [2020-10-11 15:58:46,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:58:46,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364413791] [2020-10-11 15:58:46,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:58:46,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:58:47,045 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-11 15:58:47,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364413791] [2020-10-11 15:58:47,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357863405] [2020-10-11 15:58:47,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 15:58:47,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:58:47,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 15:58:47,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 15:58:47,250 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-11 15:58:47,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 15:58:47,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-11 15:58:47,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777386684] [2020-10-11 15:58:47,252 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-11 15:58:47,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:58:47,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-11 15:58:47,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-11 15:58:47,253 INFO L87 Difference]: Start difference. First operand 9338 states and 42582 transitions. Second operand 16 states. [2020-10-11 15:58:48,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:58:48,184 INFO L93 Difference]: Finished difference Result 29696 states and 113916 transitions. [2020-10-11 15:58:48,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 15:58:48,184 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-11 15:58:48,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:58:48,249 INFO L225 Difference]: With dead ends: 29696 [2020-10-11 15:58:48,249 INFO L226 Difference]: Without dead ends: 29676 [2020-10-11 15:58:48,250 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-11 15:58:48,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29676 states. [2020-10-11 15:58:48,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29676 to 9291. [2020-10-11 15:58:48,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9291 states. [2020-10-11 15:58:48,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9291 states to 9291 states and 42295 transitions. [2020-10-11 15:58:48,670 INFO L78 Accepts]: Start accepts. Automaton has 9291 states and 42295 transitions. Word has length 25 [2020-10-11 15:58:48,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:58:48,671 INFO L481 AbstractCegarLoop]: Abstraction has 9291 states and 42295 transitions. [2020-10-11 15:58:48,671 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-11 15:58:48,671 INFO L276 IsEmpty]: Start isEmpty. Operand 9291 states and 42295 transitions. [2020-10-11 15:58:48,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-11 15:58:48,674 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:58:48,674 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:58:48,874 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2020-10-11 15:58:48,875 INFO L429 AbstractCegarLoop]: === Iteration 26 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:58:48,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:58:48,875 INFO L82 PathProgramCache]: Analyzing trace with hash 563583274, now seen corresponding path program 2 times [2020-10-11 15:58:48,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:58:48,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704367449] [2020-10-11 15:58:48,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:58:48,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:58:48,946 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-11 15:58:48,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704367449] [2020-10-11 15:58:48,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309800506] [2020-10-11 15:58:48,947 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 15:58:49,019 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 15:58:49,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 15:58:49,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 15:58:49,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 15:58:49,125 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-11 15:58:49,125 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 15:58:49,125 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-11 15:58:49,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213452744] [2020-10-11 15:58:49,126 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-11 15:58:49,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:58:49,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-11 15:58:49,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-11 15:58:49,127 INFO L87 Difference]: Start difference. First operand 9291 states and 42295 transitions. Second operand 16 states. [2020-10-11 15:58:50,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:58:50,087 INFO L93 Difference]: Finished difference Result 29267 states and 112142 transitions. [2020-10-11 15:58:50,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 15:58:50,087 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-11 15:58:50,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:58:50,152 INFO L225 Difference]: With dead ends: 29267 [2020-10-11 15:58:50,152 INFO L226 Difference]: Without dead ends: 29245 [2020-10-11 15:58:50,152 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-11 15:58:50,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29245 states. [2020-10-11 15:58:50,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29245 to 9288. [2020-10-11 15:58:50,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9288 states. [2020-10-11 15:58:50,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9288 states to 9288 states and 42242 transitions. [2020-10-11 15:58:50,567 INFO L78 Accepts]: Start accepts. Automaton has 9288 states and 42242 transitions. Word has length 25 [2020-10-11 15:58:50,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:58:50,567 INFO L481 AbstractCegarLoop]: Abstraction has 9288 states and 42242 transitions. [2020-10-11 15:58:50,567 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-11 15:58:50,567 INFO L276 IsEmpty]: Start isEmpty. Operand 9288 states and 42242 transitions. [2020-10-11 15:58:50,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-11 15:58:50,570 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:58:50,570 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:58:50,771 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2020-10-11 15:58:50,771 INFO L429 AbstractCegarLoop]: === Iteration 27 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:58:50,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:58:50,772 INFO L82 PathProgramCache]: Analyzing trace with hash 563576516, now seen corresponding path program 2 times [2020-10-11 15:58:50,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:58:50,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456647643] [2020-10-11 15:58:50,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:58:50,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:58:50,835 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-11 15:58:50,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456647643] [2020-10-11 15:58:50,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768978478] [2020-10-11 15:58:50,835 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 15:58:50,928 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 15:58:50,929 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 15:58:50,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 15:58:50,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 15:58:51,022 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-11 15:58:51,023 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 15:58:51,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-11 15:58:51,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765466968] [2020-10-11 15:58:51,023 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-11 15:58:51,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:58:51,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-11 15:58:51,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-11 15:58:51,024 INFO L87 Difference]: Start difference. First operand 9288 states and 42242 transitions. Second operand 16 states. [2020-10-11 15:58:52,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:58:52,188 INFO L93 Difference]: Finished difference Result 28920 states and 110796 transitions. [2020-10-11 15:58:52,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 15:58:52,188 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-11 15:58:52,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:58:52,252 INFO L225 Difference]: With dead ends: 28920 [2020-10-11 15:58:52,252 INFO L226 Difference]: Without dead ends: 28898 [2020-10-11 15:58:52,252 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-11 15:58:52,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28898 states. [2020-10-11 15:58:52,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28898 to 9176. [2020-10-11 15:58:52,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9176 states. [2020-10-11 15:58:52,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9176 states to 9176 states and 41695 transitions. [2020-10-11 15:58:52,662 INFO L78 Accepts]: Start accepts. Automaton has 9176 states and 41695 transitions. Word has length 25 [2020-10-11 15:58:52,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:58:52,662 INFO L481 AbstractCegarLoop]: Abstraction has 9176 states and 41695 transitions. [2020-10-11 15:58:52,662 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-11 15:58:52,662 INFO L276 IsEmpty]: Start isEmpty. Operand 9176 states and 41695 transitions. [2020-10-11 15:58:52,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-11 15:58:52,665 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:58:52,665 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:58:52,866 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 15:58:52,866 INFO L429 AbstractCegarLoop]: === Iteration 28 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:58:52,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:58:52,867 INFO L82 PathProgramCache]: Analyzing trace with hash -2052215638, now seen corresponding path program 3 times [2020-10-11 15:58:52,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:58:52,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312339826] [2020-10-11 15:58:52,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:58:52,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:58:52,932 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-11 15:58:52,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312339826] [2020-10-11 15:58:52,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769609738] [2020-10-11 15:58:52,933 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 15:58:53,006 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-11 15:58:53,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 15:58:53,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 15:58:53,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 15:58:53,105 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-11 15:58:53,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 15:58:53,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-11 15:58:53,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469112555] [2020-10-11 15:58:53,106 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-11 15:58:53,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:58:53,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-11 15:58:53,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-11 15:58:53,107 INFO L87 Difference]: Start difference. First operand 9176 states and 41695 transitions. Second operand 16 states. [2020-10-11 15:58:54,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:58:54,036 INFO L93 Difference]: Finished difference Result 29038 states and 111216 transitions. [2020-10-11 15:58:54,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 15:58:54,037 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-11 15:58:54,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:58:54,100 INFO L225 Difference]: With dead ends: 29038 [2020-10-11 15:58:54,100 INFO L226 Difference]: Without dead ends: 29018 [2020-10-11 15:58:54,101 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-11 15:58:54,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29018 states. [2020-10-11 15:58:54,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29018 to 9000. [2020-10-11 15:58:54,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9000 states. [2020-10-11 15:58:54,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9000 states to 9000 states and 40897 transitions. [2020-10-11 15:58:54,509 INFO L78 Accepts]: Start accepts. Automaton has 9000 states and 40897 transitions. Word has length 25 [2020-10-11 15:58:54,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:58:54,509 INFO L481 AbstractCegarLoop]: Abstraction has 9000 states and 40897 transitions. [2020-10-11 15:58:54,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-11 15:58:54,509 INFO L276 IsEmpty]: Start isEmpty. Operand 9000 states and 40897 transitions. [2020-10-11 15:58:54,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-11 15:58:54,512 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:58:54,512 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:58:54,712 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2020-10-11 15:58:54,713 INFO L429 AbstractCegarLoop]: === Iteration 29 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:58:54,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:58:54,713 INFO L82 PathProgramCache]: Analyzing trace with hash -275395741, now seen corresponding path program 1 times [2020-10-11 15:58:54,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:58:54,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641524585] [2020-10-11 15:58:54,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:58:54,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:58:54,777 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-11 15:58:54,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641524585] [2020-10-11 15:58:54,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756644985] [2020-10-11 15:58:54,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 15:58:54,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:58:54,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 15:58:54,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 15:58:54,955 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-11 15:58:54,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 15:58:54,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-11 15:58:54,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767741611] [2020-10-11 15:58:54,956 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-11 15:58:54,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:58:54,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-11 15:58:54,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-11 15:58:54,957 INFO L87 Difference]: Start difference. First operand 9000 states and 40897 transitions. Second operand 16 states. [2020-10-11 15:58:56,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:58:56,036 INFO L93 Difference]: Finished difference Result 29417 states and 113034 transitions. [2020-10-11 15:58:56,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 15:58:56,037 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-11 15:58:56,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:58:56,101 INFO L225 Difference]: With dead ends: 29417 [2020-10-11 15:58:56,101 INFO L226 Difference]: Without dead ends: 29397 [2020-10-11 15:58:56,102 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-11 15:58:56,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29397 states. [2020-10-11 15:58:56,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29397 to 8990. [2020-10-11 15:58:56,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8990 states. [2020-10-11 15:58:56,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8990 states to 8990 states and 40786 transitions. [2020-10-11 15:58:56,539 INFO L78 Accepts]: Start accepts. Automaton has 8990 states and 40786 transitions. Word has length 25 [2020-10-11 15:58:56,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:58:56,539 INFO L481 AbstractCegarLoop]: Abstraction has 8990 states and 40786 transitions. [2020-10-11 15:58:56,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-11 15:58:56,540 INFO L276 IsEmpty]: Start isEmpty. Operand 8990 states and 40786 transitions. [2020-10-11 15:58:56,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-11 15:58:56,542 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:58:56,542 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:58:56,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 15:58:56,743 INFO L429 AbstractCegarLoop]: === Iteration 30 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:58:56,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:58:56,744 INFO L82 PathProgramCache]: Analyzing trace with hash -724963437, now seen corresponding path program 2 times [2020-10-11 15:58:56,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:58:56,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085404692] [2020-10-11 15:58:56,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:58:56,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:58:56,802 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-11 15:58:56,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085404692] [2020-10-11 15:58:56,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855793591] [2020-10-11 15:58:56,803 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 15:58:57,022 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 15:58:57,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 15:58:57,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 15:58:57,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 15:58:57,173 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-11 15:58:57,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 15:58:57,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-11 15:58:57,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060526777] [2020-10-11 15:58:57,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-11 15:58:57,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:58:57,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-11 15:58:57,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-11 15:58:57,175 INFO L87 Difference]: Start difference. First operand 8990 states and 40786 transitions. Second operand 16 states. [2020-10-11 15:58:58,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:58:58,253 INFO L93 Difference]: Finished difference Result 29064 states and 111552 transitions. [2020-10-11 15:58:58,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 15:58:58,253 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-11 15:58:58,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:58:58,317 INFO L225 Difference]: With dead ends: 29064 [2020-10-11 15:58:58,317 INFO L226 Difference]: Without dead ends: 29037 [2020-10-11 15:58:58,317 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-11 15:58:58,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29037 states. [2020-10-11 15:58:58,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29037 to 8953. [2020-10-11 15:58:58,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8953 states. [2020-10-11 15:58:58,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8953 states to 8953 states and 40609 transitions. [2020-10-11 15:58:58,727 INFO L78 Accepts]: Start accepts. Automaton has 8953 states and 40609 transitions. Word has length 25 [2020-10-11 15:58:58,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:58:58,727 INFO L481 AbstractCegarLoop]: Abstraction has 8953 states and 40609 transitions. [2020-10-11 15:58:58,728 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-11 15:58:58,728 INFO L276 IsEmpty]: Start isEmpty. Operand 8953 states and 40609 transitions. [2020-10-11 15:58:58,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-11 15:58:58,731 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:58:58,731 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:58:58,931 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2020-10-11 15:58:58,932 INFO L429 AbstractCegarLoop]: === Iteration 31 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:58:58,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:58:58,932 INFO L82 PathProgramCache]: Analyzing trace with hash -724977108, now seen corresponding path program 4 times [2020-10-11 15:58:58,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:58:58,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152136284] [2020-10-11 15:58:58,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:58:58,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:58:58,997 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-11 15:58:58,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152136284] [2020-10-11 15:58:58,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529946058] [2020-10-11 15:58:58,997 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 15:58:59,067 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 15:58:59,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 15:58:59,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 15:58:59,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 15:58:59,171 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-11 15:58:59,171 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 15:58:59,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-11 15:58:59,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147155350] [2020-10-11 15:58:59,172 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-11 15:58:59,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:58:59,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-11 15:58:59,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-11 15:58:59,173 INFO L87 Difference]: Start difference. First operand 8953 states and 40609 transitions. Second operand 16 states. [2020-10-11 15:59:00,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:59:00,123 INFO L93 Difference]: Finished difference Result 28523 states and 109227 transitions. [2020-10-11 15:59:00,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 15:59:00,123 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-11 15:59:00,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:59:00,186 INFO L225 Difference]: With dead ends: 28523 [2020-10-11 15:59:00,186 INFO L226 Difference]: Without dead ends: 28501 [2020-10-11 15:59:00,186 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-11 15:59:00,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28501 states. [2020-10-11 15:59:00,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28501 to 8841. [2020-10-11 15:59:00,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8841 states. [2020-10-11 15:59:00,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8841 states to 8841 states and 40062 transitions. [2020-10-11 15:59:00,587 INFO L78 Accepts]: Start accepts. Automaton has 8841 states and 40062 transitions. Word has length 25 [2020-10-11 15:59:00,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:59:00,588 INFO L481 AbstractCegarLoop]: Abstraction has 8841 states and 40062 transitions. [2020-10-11 15:59:00,588 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-11 15:59:00,588 INFO L276 IsEmpty]: Start isEmpty. Operand 8841 states and 40062 transitions. [2020-10-11 15:59:00,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-11 15:59:00,592 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:59:00,592 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:59:00,792 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 15:59:00,793 INFO L429 AbstractCegarLoop]: === Iteration 32 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:59:00,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:59:00,793 INFO L82 PathProgramCache]: Analyzing trace with hash -1969402905, now seen corresponding path program 3 times [2020-10-11 15:59:00,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:59:00,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423078184] [2020-10-11 15:59:00,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:59:00,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:59:00,852 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-11 15:59:00,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423078184] [2020-10-11 15:59:00,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357403122] [2020-10-11 15:59:00,853 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 15:59:00,922 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-11 15:59:00,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 15:59:00,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 15:59:00,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 15:59:01,027 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-11 15:59:01,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 15:59:01,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-11 15:59:01,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708867947] [2020-10-11 15:59:01,028 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-11 15:59:01,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:59:01,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-11 15:59:01,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-11 15:59:01,029 INFO L87 Difference]: Start difference. First operand 8841 states and 40062 transitions. Second operand 16 states. [2020-10-11 15:59:01,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:59:01,927 INFO L93 Difference]: Finished difference Result 28636 states and 109852 transitions. [2020-10-11 15:59:01,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 15:59:01,927 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-11 15:59:01,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:59:01,990 INFO L225 Difference]: With dead ends: 28636 [2020-10-11 15:59:01,990 INFO L226 Difference]: Without dead ends: 28616 [2020-10-11 15:59:01,990 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-11 15:59:02,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28616 states. [2020-10-11 15:59:02,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28616 to 8702. [2020-10-11 15:59:02,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8702 states. [2020-10-11 15:59:02,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8702 states to 8702 states and 39438 transitions. [2020-10-11 15:59:02,378 INFO L78 Accepts]: Start accepts. Automaton has 8702 states and 39438 transitions. Word has length 25 [2020-10-11 15:59:02,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:59:02,379 INFO L481 AbstractCegarLoop]: Abstraction has 8702 states and 39438 transitions. [2020-10-11 15:59:02,379 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-11 15:59:02,379 INFO L276 IsEmpty]: Start isEmpty. Operand 8702 states and 39438 transitions. [2020-10-11 15:59:02,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-11 15:59:02,381 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:59:02,382 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:59:02,587 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2020-10-11 15:59:02,588 INFO L429 AbstractCegarLoop]: === Iteration 33 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:59:02,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:59:02,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1576190868, now seen corresponding path program 3 times [2020-10-11 15:59:02,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:59:02,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184702215] [2020-10-11 15:59:02,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:59:02,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:59:02,791 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-11 15:59:02,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184702215] [2020-10-11 15:59:02,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568098170] [2020-10-11 15:59:02,792 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 15:59:02,903 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-11 15:59:02,903 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 15:59:02,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 15:59:02,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 15:59:03,029 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-11 15:59:03,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 15:59:03,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-11 15:59:03,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995783206] [2020-10-11 15:59:03,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-11 15:59:03,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:59:03,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-11 15:59:03,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-11 15:59:03,031 INFO L87 Difference]: Start difference. First operand 8702 states and 39438 transitions. Second operand 16 states. [2020-10-11 15:59:03,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:59:03,990 INFO L93 Difference]: Finished difference Result 28297 states and 108461 transitions. [2020-10-11 15:59:03,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 15:59:03,991 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-11 15:59:03,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:59:04,052 INFO L225 Difference]: With dead ends: 28297 [2020-10-11 15:59:04,052 INFO L226 Difference]: Without dead ends: 28277 [2020-10-11 15:59:04,052 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-11 15:59:04,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28277 states. [2020-10-11 15:59:04,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28277 to 8596. [2020-10-11 15:59:04,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8596 states. [2020-10-11 15:59:04,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8596 states to 8596 states and 38978 transitions. [2020-10-11 15:59:04,440 INFO L78 Accepts]: Start accepts. Automaton has 8596 states and 38978 transitions. Word has length 25 [2020-10-11 15:59:04,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:59:04,440 INFO L481 AbstractCegarLoop]: Abstraction has 8596 states and 38978 transitions. [2020-10-11 15:59:04,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-11 15:59:04,441 INFO L276 IsEmpty]: Start isEmpty. Operand 8596 states and 38978 transitions. [2020-10-11 15:59:04,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-11 15:59:04,443 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:59:04,443 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:59:04,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 15:59:04,644 INFO L429 AbstractCegarLoop]: === Iteration 34 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:59:04,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:59:04,645 INFO L82 PathProgramCache]: Analyzing trace with hash 1673729315, now seen corresponding path program 4 times [2020-10-11 15:59:04,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:59:04,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608306066] [2020-10-11 15:59:04,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:59:04,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:59:04,707 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-11 15:59:04,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608306066] [2020-10-11 15:59:04,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668326498] [2020-10-11 15:59:04,708 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 15:59:04,779 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 15:59:04,779 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 15:59:04,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 15:59:04,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 15:59:04,882 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-11 15:59:04,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 15:59:04,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-11 15:59:04,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320915479] [2020-10-11 15:59:04,883 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-11 15:59:04,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:59:04,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-11 15:59:04,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-11 15:59:04,883 INFO L87 Difference]: Start difference. First operand 8596 states and 38978 transitions. Second operand 16 states. [2020-10-11 15:59:05,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:59:05,976 INFO L93 Difference]: Finished difference Result 28565 states and 109596 transitions. [2020-10-11 15:59:05,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 15:59:05,977 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-11 15:59:05,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:59:06,039 INFO L225 Difference]: With dead ends: 28565 [2020-10-11 15:59:06,039 INFO L226 Difference]: Without dead ends: 28538 [2020-10-11 15:59:06,039 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-11 15:59:06,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28538 states. [2020-10-11 15:59:06,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28538 to 8563. [2020-10-11 15:59:06,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8563 states. [2020-10-11 15:59:06,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8563 states to 8563 states and 38809 transitions. [2020-10-11 15:59:06,433 INFO L78 Accepts]: Start accepts. Automaton has 8563 states and 38809 transitions. Word has length 25 [2020-10-11 15:59:06,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:59:06,433 INFO L481 AbstractCegarLoop]: Abstraction has 8563 states and 38809 transitions. [2020-10-11 15:59:06,433 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-11 15:59:06,433 INFO L276 IsEmpty]: Start isEmpty. Operand 8563 states and 38809 transitions. [2020-10-11 15:59:06,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-11 15:59:06,436 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:59:06,436 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:59:06,637 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2020-10-11 15:59:06,637 INFO L429 AbstractCegarLoop]: === Iteration 35 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:59:06,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:59:06,638 INFO L82 PathProgramCache]: Analyzing trace with hash 1673708886, now seen corresponding path program 4 times [2020-10-11 15:59:06,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:59:06,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915984089] [2020-10-11 15:59:06,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:59:06,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:59:06,707 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-11 15:59:06,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915984089] [2020-10-11 15:59:06,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165382542] [2020-10-11 15:59:06,708 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 15:59:06,785 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 15:59:06,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 15:59:06,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 15:59:06,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 15:59:06,934 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-11 15:59:06,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 15:59:06,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-11 15:59:06,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822192833] [2020-10-11 15:59:06,935 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-11 15:59:06,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:59:06,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-11 15:59:06,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-11 15:59:06,936 INFO L87 Difference]: Start difference. First operand 8563 states and 38809 transitions. Second operand 16 states. [2020-10-11 15:59:08,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:59:08,219 INFO L93 Difference]: Finished difference Result 28213 states and 108237 transitions. [2020-10-11 15:59:08,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 15:59:08,220 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-11 15:59:08,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:59:08,281 INFO L225 Difference]: With dead ends: 28213 [2020-10-11 15:59:08,281 INFO L226 Difference]: Without dead ends: 28186 [2020-10-11 15:59:08,281 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-11 15:59:08,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28186 states. [2020-10-11 15:59:08,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28186 to 8421. [2020-10-11 15:59:08,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8421 states. [2020-10-11 15:59:08,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8421 states to 8421 states and 38146 transitions. [2020-10-11 15:59:08,664 INFO L78 Accepts]: Start accepts. Automaton has 8421 states and 38146 transitions. Word has length 25 [2020-10-11 15:59:08,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:59:08,664 INFO L481 AbstractCegarLoop]: Abstraction has 8421 states and 38146 transitions. [2020-10-11 15:59:08,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-11 15:59:08,664 INFO L276 IsEmpty]: Start isEmpty. Operand 8421 states and 38146 transitions. [2020-10-11 15:59:08,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-11 15:59:08,667 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:59:08,667 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:59:08,867 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 15:59:08,868 INFO L429 AbstractCegarLoop]: === Iteration 36 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:59:08,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:59:08,868 INFO L82 PathProgramCache]: Analyzing trace with hash -857609261, now seen corresponding path program 5 times [2020-10-11 15:59:08,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:59:08,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993810737] [2020-10-11 15:59:08,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:59:08,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:59:08,933 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-11 15:59:08,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993810737] [2020-10-11 15:59:08,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:59:08,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 15:59:08,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447156733] [2020-10-11 15:59:08,934 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-11 15:59:08,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:59:08,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-11 15:59:08,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-11 15:59:08,935 INFO L87 Difference]: Start difference. First operand 8421 states and 38146 transitions. Second operand 9 states. [2020-10-11 15:59:09,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:59:09,932 INFO L93 Difference]: Finished difference Result 28226 states and 108274 transitions. [2020-10-11 15:59:09,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 15:59:09,933 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-11 15:59:09,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:59:10,141 INFO L225 Difference]: With dead ends: 28226 [2020-10-11 15:59:10,142 INFO L226 Difference]: Without dead ends: 28206 [2020-10-11 15:59:10,142 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-11 15:59:10,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28206 states. [2020-10-11 15:59:10,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28206 to 8277. [2020-10-11 15:59:10,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8277 states. [2020-10-11 15:59:10,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8277 states to 8277 states and 37487 transitions. [2020-10-11 15:59:10,505 INFO L78 Accepts]: Start accepts. Automaton has 8277 states and 37487 transitions. Word has length 25 [2020-10-11 15:59:10,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:59:10,506 INFO L481 AbstractCegarLoop]: Abstraction has 8277 states and 37487 transitions. [2020-10-11 15:59:10,506 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-11 15:59:10,506 INFO L276 IsEmpty]: Start isEmpty. Operand 8277 states and 37487 transitions. [2020-10-11 15:59:10,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-11 15:59:10,509 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:59:10,509 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:59:10,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2020-10-11 15:59:10,509 INFO L429 AbstractCegarLoop]: === Iteration 37 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:59:10,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:59:10,510 INFO L82 PathProgramCache]: Analyzing trace with hash -857622932, now seen corresponding path program 5 times [2020-10-11 15:59:10,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:59:10,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327800328] [2020-10-11 15:59:10,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:59:10,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:59:10,583 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-11 15:59:10,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327800328] [2020-10-11 15:59:10,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:59:10,584 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 15:59:10,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448261699] [2020-10-11 15:59:10,585 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-11 15:59:10,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:59:10,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-11 15:59:10,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-11 15:59:10,585 INFO L87 Difference]: Start difference. First operand 8277 states and 37487 transitions. Second operand 9 states. [2020-10-11 15:59:11,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:59:11,453 INFO L93 Difference]: Finished difference Result 27801 states and 106552 transitions. [2020-10-11 15:59:11,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 15:59:11,454 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-11 15:59:11,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:59:11,514 INFO L225 Difference]: With dead ends: 27801 [2020-10-11 15:59:11,514 INFO L226 Difference]: Without dead ends: 27781 [2020-10-11 15:59:11,514 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-11 15:59:11,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27781 states. [2020-10-11 15:59:11,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27781 to 8127. [2020-10-11 15:59:11,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8127 states. [2020-10-11 15:59:11,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8127 states to 8127 states and 36806 transitions. [2020-10-11 15:59:11,893 INFO L78 Accepts]: Start accepts. Automaton has 8127 states and 36806 transitions. Word has length 25 [2020-10-11 15:59:11,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:59:11,893 INFO L481 AbstractCegarLoop]: Abstraction has 8127 states and 36806 transitions. [2020-10-11 15:59:11,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-11 15:59:11,893 INFO L276 IsEmpty]: Start isEmpty. Operand 8127 states and 36806 transitions. [2020-10-11 15:59:11,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-11 15:59:11,896 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:59:11,896 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:59:11,897 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2020-10-11 15:59:11,897 INFO L429 AbstractCegarLoop]: === Iteration 38 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:59:11,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:59:11,897 INFO L82 PathProgramCache]: Analyzing trace with hash -864096941, now seen corresponding path program 6 times [2020-10-11 15:59:11,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:59:11,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340610022] [2020-10-11 15:59:11,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:59:11,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:59:11,968 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-11 15:59:11,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340610022] [2020-10-11 15:59:11,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:59:11,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 15:59:11,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492778084] [2020-10-11 15:59:11,969 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-11 15:59:11,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:59:11,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-11 15:59:11,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-11 15:59:11,970 INFO L87 Difference]: Start difference. First operand 8127 states and 36806 transitions. Second operand 9 states. [2020-10-11 15:59:12,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:59:12,868 INFO L93 Difference]: Finished difference Result 27548 states and 105447 transitions. [2020-10-11 15:59:12,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 15:59:12,869 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-11 15:59:12,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:59:12,929 INFO L225 Difference]: With dead ends: 27548 [2020-10-11 15:59:12,929 INFO L226 Difference]: Without dead ends: 27521 [2020-10-11 15:59:12,929 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-11 15:59:13,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27521 states. [2020-10-11 15:59:13,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27521 to 7841. [2020-10-11 15:59:13,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7841 states. [2020-10-11 15:59:13,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7841 states to 7841 states and 35578 transitions. [2020-10-11 15:59:13,300 INFO L78 Accepts]: Start accepts. Automaton has 7841 states and 35578 transitions. Word has length 25 [2020-10-11 15:59:13,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:59:13,300 INFO L481 AbstractCegarLoop]: Abstraction has 7841 states and 35578 transitions. [2020-10-11 15:59:13,300 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-11 15:59:13,300 INFO L276 IsEmpty]: Start isEmpty. Operand 7841 states and 35578 transitions. [2020-10-11 15:59:13,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-11 15:59:13,303 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:59:13,303 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:59:13,303 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2020-10-11 15:59:13,304 INFO L429 AbstractCegarLoop]: === Iteration 39 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:59:13,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:59:13,304 INFO L82 PathProgramCache]: Analyzing trace with hash -864117370, now seen corresponding path program 5 times [2020-10-11 15:59:13,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:59:13,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009806917] [2020-10-11 15:59:13,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:59:13,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:59:13,374 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-11 15:59:13,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009806917] [2020-10-11 15:59:13,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:59:13,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 15:59:13,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658116271] [2020-10-11 15:59:13,375 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-11 15:59:13,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:59:13,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-11 15:59:13,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-11 15:59:13,376 INFO L87 Difference]: Start difference. First operand 7841 states and 35578 transitions. Second operand 9 states. [2020-10-11 15:59:14,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:59:14,252 INFO L93 Difference]: Finished difference Result 27167 states and 103966 transitions. [2020-10-11 15:59:14,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 15:59:14,252 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-11 15:59:14,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:59:14,311 INFO L225 Difference]: With dead ends: 27167 [2020-10-11 15:59:14,311 INFO L226 Difference]: Without dead ends: 27147 [2020-10-11 15:59:14,311 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-11 15:59:14,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27147 states. [2020-10-11 15:59:14,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27147 to 7743. [2020-10-11 15:59:14,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7743 states. [2020-10-11 15:59:14,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7743 states to 7743 states and 35142 transitions. [2020-10-11 15:59:14,675 INFO L78 Accepts]: Start accepts. Automaton has 7743 states and 35142 transitions. Word has length 25 [2020-10-11 15:59:14,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:59:14,675 INFO L481 AbstractCegarLoop]: Abstraction has 7743 states and 35142 transitions. [2020-10-11 15:59:14,675 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-11 15:59:14,675 INFO L276 IsEmpty]: Start isEmpty. Operand 7743 states and 35142 transitions. [2020-10-11 15:59:14,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-11 15:59:14,678 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:59:14,678 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:59:14,678 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2020-10-11 15:59:14,678 INFO L429 AbstractCegarLoop]: === Iteration 40 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:59:14,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:59:14,678 INFO L82 PathProgramCache]: Analyzing trace with hash -877234772, now seen corresponding path program 6 times [2020-10-11 15:59:14,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:59:14,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866789204] [2020-10-11 15:59:14,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:59:14,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:59:14,755 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-11 15:59:14,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866789204] [2020-10-11 15:59:14,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:59:14,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 15:59:14,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358547371] [2020-10-11 15:59:14,756 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-11 15:59:14,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:59:14,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-11 15:59:14,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-11 15:59:14,757 INFO L87 Difference]: Start difference. First operand 7743 states and 35142 transitions. Second operand 9 states. [2020-10-11 15:59:15,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:59:15,686 INFO L93 Difference]: Finished difference Result 26955 states and 103085 transitions. [2020-10-11 15:59:15,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 15:59:15,687 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-11 15:59:15,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:59:15,745 INFO L225 Difference]: With dead ends: 26955 [2020-10-11 15:59:15,745 INFO L226 Difference]: Without dead ends: 26928 [2020-10-11 15:59:15,745 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-11 15:59:15,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26928 states. [2020-10-11 15:59:16,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26928 to 7532. [2020-10-11 15:59:16,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7532 states. [2020-10-11 15:59:16,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7532 states to 7532 states and 34256 transitions. [2020-10-11 15:59:16,233 INFO L78 Accepts]: Start accepts. Automaton has 7532 states and 34256 transitions. Word has length 25 [2020-10-11 15:59:16,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:59:16,234 INFO L481 AbstractCegarLoop]: Abstraction has 7532 states and 34256 transitions. [2020-10-11 15:59:16,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-11 15:59:16,234 INFO L276 IsEmpty]: Start isEmpty. Operand 7532 states and 34256 transitions. [2020-10-11 15:59:16,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-11 15:59:16,237 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:59:16,238 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:59:16,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2020-10-11 15:59:16,238 INFO L429 AbstractCegarLoop]: === Iteration 41 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:59:16,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:59:16,238 INFO L82 PathProgramCache]: Analyzing trace with hash -877241530, now seen corresponding path program 6 times [2020-10-11 15:59:16,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:59:16,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450683990] [2020-10-11 15:59:16,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:59:16,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:59:16,308 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-11 15:59:16,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450683990] [2020-10-11 15:59:16,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:59:16,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 15:59:16,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645686193] [2020-10-11 15:59:16,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-11 15:59:16,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:59:16,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-11 15:59:16,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-11 15:59:16,309 INFO L87 Difference]: Start difference. First operand 7532 states and 34256 transitions. Second operand 9 states. [2020-10-11 15:59:17,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:59:17,301 INFO L93 Difference]: Finished difference Result 26632 states and 101828 transitions. [2020-10-11 15:59:17,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 15:59:17,302 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-11 15:59:17,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:59:17,359 INFO L225 Difference]: With dead ends: 26632 [2020-10-11 15:59:17,359 INFO L226 Difference]: Without dead ends: 26605 [2020-10-11 15:59:17,359 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-11 15:59:17,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26605 states. [2020-10-11 15:59:17,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26605 to 7269. [2020-10-11 15:59:17,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7269 states. [2020-10-11 15:59:17,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7269 states to 7269 states and 33154 transitions. [2020-10-11 15:59:17,708 INFO L78 Accepts]: Start accepts. Automaton has 7269 states and 33154 transitions. Word has length 25 [2020-10-11 15:59:17,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:59:17,708 INFO L481 AbstractCegarLoop]: Abstraction has 7269 states and 33154 transitions. [2020-10-11 15:59:17,708 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-11 15:59:17,708 INFO L276 IsEmpty]: Start isEmpty. Operand 7269 states and 33154 transitions. [2020-10-11 15:59:17,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-11 15:59:17,711 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:59:17,711 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:59:17,711 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2020-10-11 15:59:17,711 INFO L429 AbstractCegarLoop]: === Iteration 42 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:59:17,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:59:17,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1311164244, now seen corresponding path program 1 times [2020-10-11 15:59:17,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:59:17,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740107965] [2020-10-11 15:59:17,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:59:17,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:59:17,746 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-11 15:59:17,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740107965] [2020-10-11 15:59:17,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:59:17,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 15:59:17,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729064733] [2020-10-11 15:59:17,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-11 15:59:17,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:59:17,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-11 15:59:17,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-11 15:59:17,748 INFO L87 Difference]: Start difference. First operand 7269 states and 33154 transitions. Second operand 5 states. [2020-10-11 15:59:17,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:59:17,904 INFO L93 Difference]: Finished difference Result 11919 states and 51979 transitions. [2020-10-11 15:59:17,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-11 15:59:17,904 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-10-11 15:59:17,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:59:17,930 INFO L225 Difference]: With dead ends: 11919 [2020-10-11 15:59:17,931 INFO L226 Difference]: Without dead ends: 11887 [2020-10-11 15:59:17,931 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-11 15:59:18,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11887 states. [2020-10-11 15:59:18,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11887 to 8560. [2020-10-11 15:59:18,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8560 states. [2020-10-11 15:59:18,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8560 states to 8560 states and 38495 transitions. [2020-10-11 15:59:18,161 INFO L78 Accepts]: Start accepts. Automaton has 8560 states and 38495 transitions. Word has length 25 [2020-10-11 15:59:18,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:59:18,161 INFO L481 AbstractCegarLoop]: Abstraction has 8560 states and 38495 transitions. [2020-10-11 15:59:18,161 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-11 15:59:18,161 INFO L276 IsEmpty]: Start isEmpty. Operand 8560 states and 38495 transitions. [2020-10-11 15:59:18,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-11 15:59:18,165 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:59:18,165 INFO L421 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:59:18,165 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2020-10-11 15:59:18,165 INFO L429 AbstractCegarLoop]: === Iteration 43 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:59:18,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:59:18,165 INFO L82 PathProgramCache]: Analyzing trace with hash 1986416772, now seen corresponding path program 1 times [2020-10-11 15:59:18,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:59:18,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146689574] [2020-10-11 15:59:18,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:59:18,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-11 15:59:18,172 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-11 15:59:18,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-11 15:59:18,177 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-11 15:59:18,184 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-11 15:59:18,184 INFO L519 BasicCegarLoop]: Counterexample might be feasible [2020-10-11 15:59:18,184 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2020-10-11 15:59:18,185 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-11 15:59:18,185 WARN L371 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-11 15:59:18,185 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2020-10-11 15:59:18,212 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,212 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,212 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,212 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,213 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,213 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,213 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,213 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,213 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,213 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,213 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,213 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,214 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,214 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,214 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,214 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,214 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,214 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,214 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,214 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,215 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,215 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,215 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,215 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,215 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,215 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,216 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,216 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,216 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,216 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,216 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,216 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,216 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,216 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,216 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,217 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,217 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,217 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,217 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,217 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,217 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,217 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,218 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,218 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,218 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,218 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,218 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,218 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,218 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,218 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,218 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,218 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,218 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,219 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,219 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,219 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,219 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,219 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,219 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,219 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,219 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,219 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,219 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,220 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,220 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,220 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,220 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,220 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,220 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,220 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,221 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,221 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,221 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,221 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,221 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,221 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,221 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,222 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,222 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,222 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,222 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,222 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,222 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,222 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,222 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,223 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,223 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,223 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,223 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,223 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,223 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,223 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,224 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,224 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,224 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,224 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,224 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,224 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,224 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,224 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,225 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,225 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,225 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,225 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,225 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,226 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,226 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,227 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,227 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,227 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,227 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,227 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,229 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,229 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,230 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,230 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,230 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,231 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,231 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,231 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,231 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,231 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,232 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,232 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,232 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,232 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,232 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,233 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,234 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,234 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,234 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,234 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,235 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,235 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,235 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,235 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,236 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,236 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,236 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,236 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,237 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,237 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,237 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,237 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,238 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,238 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,238 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,238 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,239 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,239 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,240 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,240 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,240 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,240 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,241 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,241 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,241 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,241 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,242 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,242 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,242 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,242 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,242 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,243 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,243 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,243 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,243 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,243 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:59:18,244 INFO L253 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-10-11 15:59:18,244 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 15:59:18,244 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-11 15:59:18,244 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 15:59:18,244 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 15:59:18,244 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 15:59:18,245 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 15:59:18,245 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 15:59:18,245 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 15:59:18,247 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-11 15:59:18,247 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 156 places, 138 transitions, 396 flow [2020-10-11 15:59:18,247 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 156 places, 138 transitions, 396 flow [2020-10-11 15:59:18,247 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 156 places, 138 transitions, 396 flow [2020-10-11 15:59:18,265 INFO L129 PetriNetUnfolder]: 9/173 cut-off events. [2020-10-11 15:59:18,266 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-10-11 15:59:18,267 INFO L80 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 173 events. 9/173 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 284 event pairs, 0 based on Foata normal form. 0/156 useless extension candidates. Maximal degree in co-relation 208. Up to 14 conditions per place. [2020-10-11 15:59:18,272 INFO L117 LiptonReduction]: Number of co-enabled transitions 2832 [2020-10-11 15:59:20,281 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 61 [2020-10-11 15:59:20,600 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2020-10-11 15:59:20,750 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-10-11 15:59:20,766 INFO L132 LiptonReduction]: Checked pairs total: 4694 [2020-10-11 15:59:20,766 INFO L134 LiptonReduction]: Total number of compositions: 121 [2020-10-11 15:59:20,766 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 71 places, 45 transitions, 210 flow [2020-10-11 15:59:22,335 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 18584 states. [2020-10-11 15:59:22,335 INFO L276 IsEmpty]: Start isEmpty. Operand 18584 states. [2020-10-11 15:59:22,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-11 15:59:22,335 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:59:22,335 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-11 15:59:22,335 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:59:22,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:59:22,336 INFO L82 PathProgramCache]: Analyzing trace with hash 1298891, now seen corresponding path program 1 times [2020-10-11 15:59:22,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:59:22,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856259691] [2020-10-11 15:59:22,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:59:22,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:59:22,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:59:22,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856259691] [2020-10-11 15:59:22,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:59:22,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-11 15:59:22,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573768879] [2020-10-11 15:59:22,352 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 15:59:22,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:59:22,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 15:59:22,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 15:59:22,353 INFO L87 Difference]: Start difference. First operand 18584 states. Second operand 3 states. [2020-10-11 15:59:22,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:59:22,494 INFO L93 Difference]: Finished difference Result 17885 states and 92755 transitions. [2020-10-11 15:59:22,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 15:59:22,495 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-11 15:59:22,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:59:22,543 INFO L225 Difference]: With dead ends: 17885 [2020-10-11 15:59:22,543 INFO L226 Difference]: Without dead ends: 16791 [2020-10-11 15:59:22,543 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 15:59:23,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16791 states. [2020-10-11 15:59:23,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16791 to 16791. [2020-10-11 15:59:23,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16791 states. [2020-10-11 15:59:23,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16791 states to 16791 states and 86558 transitions. [2020-10-11 15:59:23,561 INFO L78 Accepts]: Start accepts. Automaton has 16791 states and 86558 transitions. Word has length 3 [2020-10-11 15:59:23,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:59:23,561 INFO L481 AbstractCegarLoop]: Abstraction has 16791 states and 86558 transitions. [2020-10-11 15:59:23,561 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 15:59:23,561 INFO L276 IsEmpty]: Start isEmpty. Operand 16791 states and 86558 transitions. [2020-10-11 15:59:23,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-11 15:59:23,562 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:59:23,562 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:59:23,562 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2020-10-11 15:59:23,562 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:59:23,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:59:23,562 INFO L82 PathProgramCache]: Analyzing trace with hash 1091574945, now seen corresponding path program 1 times [2020-10-11 15:59:23,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:59:23,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790939686] [2020-10-11 15:59:23,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:59:23,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:59:23,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:59:23,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790939686] [2020-10-11 15:59:23,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:59:23,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 15:59:23,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612126137] [2020-10-11 15:59:23,589 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-11 15:59:23,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:59:23,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-11 15:59:23,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-11 15:59:23,590 INFO L87 Difference]: Start difference. First operand 16791 states and 86558 transitions. Second operand 5 states. [2020-10-11 15:59:23,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:59:23,853 INFO L93 Difference]: Finished difference Result 30985 states and 150574 transitions. [2020-10-11 15:59:23,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-11 15:59:23,854 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-11 15:59:23,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:59:23,940 INFO L225 Difference]: With dead ends: 30985 [2020-10-11 15:59:23,940 INFO L226 Difference]: Without dead ends: 30977 [2020-10-11 15:59:23,940 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-11 15:59:24,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30977 states. [2020-10-11 15:59:24,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30977 to 19868. [2020-10-11 15:59:24,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19868 states. [2020-10-11 15:59:24,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19868 states to 19868 states and 103363 transitions. [2020-10-11 15:59:24,936 INFO L78 Accepts]: Start accepts. Automaton has 19868 states and 103363 transitions. Word has length 9 [2020-10-11 15:59:24,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:59:24,936 INFO L481 AbstractCegarLoop]: Abstraction has 19868 states and 103363 transitions. [2020-10-11 15:59:24,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-11 15:59:24,936 INFO L276 IsEmpty]: Start isEmpty. Operand 19868 states and 103363 transitions. [2020-10-11 15:59:24,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 15:59:24,937 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:59:24,937 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:59:24,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2020-10-11 15:59:24,937 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:59:24,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:59:24,937 INFO L82 PathProgramCache]: Analyzing trace with hash -231509072, now seen corresponding path program 1 times [2020-10-11 15:59:24,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:59:24,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099819729] [2020-10-11 15:59:24,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:59:24,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:59:24,966 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-11 15:59:24,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099819729] [2020-10-11 15:59:24,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:59:24,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 15:59:24,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142272785] [2020-10-11 15:59:24,967 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-11 15:59:24,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:59:24,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-11 15:59:24,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-11 15:59:24,968 INFO L87 Difference]: Start difference. First operand 19868 states and 103363 transitions. Second operand 5 states. [2020-10-11 15:59:25,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:59:25,256 INFO L93 Difference]: Finished difference Result 36296 states and 178836 transitions. [2020-10-11 15:59:25,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-11 15:59:25,257 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-11 15:59:25,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:59:25,360 INFO L225 Difference]: With dead ends: 36296 [2020-10-11 15:59:25,360 INFO L226 Difference]: Without dead ends: 36280 [2020-10-11 15:59:25,360 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-11 15:59:25,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36280 states. [2020-10-11 15:59:26,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36280 to 23806. [2020-10-11 15:59:26,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23806 states. [2020-10-11 15:59:26,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23806 states to 23806 states and 125455 transitions. [2020-10-11 15:59:26,503 INFO L78 Accepts]: Start accepts. Automaton has 23806 states and 125455 transitions. Word has length 13 [2020-10-11 15:59:26,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:59:26,503 INFO L481 AbstractCegarLoop]: Abstraction has 23806 states and 125455 transitions. [2020-10-11 15:59:26,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-11 15:59:26,504 INFO L276 IsEmpty]: Start isEmpty. Operand 23806 states and 125455 transitions. [2020-10-11 15:59:26,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-11 15:59:26,504 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:59:26,504 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:59:26,504 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2020-10-11 15:59:26,504 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:59:26,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:59:26,504 INFO L82 PathProgramCache]: Analyzing trace with hash -588793474, now seen corresponding path program 1 times [2020-10-11 15:59:26,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:59:26,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906957120] [2020-10-11 15:59:26,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:59:26,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:59:26,544 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:59:26,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906957120] [2020-10-11 15:59:26,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361322105] [2020-10-11 15:59:26,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 15:59:26,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:59:26,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-11 15:59:26,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 15:59:26,698 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:59:26,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 15:59:26,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-11 15:59:26,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265421542] [2020-10-11 15:59:26,699 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-11 15:59:26,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:59:26,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-11 15:59:26,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-11 15:59:26,700 INFO L87 Difference]: Start difference. First operand 23806 states and 125455 transitions. Second operand 12 states. [2020-10-11 15:59:27,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:59:27,669 INFO L93 Difference]: Finished difference Result 56720 states and 262685 transitions. [2020-10-11 15:59:27,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 15:59:27,670 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-11 15:59:27,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:59:27,830 INFO L225 Difference]: With dead ends: 56720 [2020-10-11 15:59:27,830 INFO L226 Difference]: Without dead ends: 56704 [2020-10-11 15:59:27,830 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-11 15:59:28,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56704 states. [2020-10-11 15:59:29,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56704 to 23629. [2020-10-11 15:59:29,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23629 states. [2020-10-11 15:59:29,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23629 states to 23629 states and 124418 transitions. [2020-10-11 15:59:29,240 INFO L78 Accepts]: Start accepts. Automaton has 23629 states and 124418 transitions. Word has length 15 [2020-10-11 15:59:29,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:59:29,240 INFO L481 AbstractCegarLoop]: Abstraction has 23629 states and 124418 transitions. [2020-10-11 15:59:29,241 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-11 15:59:29,241 INFO L276 IsEmpty]: Start isEmpty. Operand 23629 states and 124418 transitions. [2020-10-11 15:59:29,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-11 15:59:29,241 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:59:29,241 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:59:29,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2020-10-11 15:59:29,442 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:59:29,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:59:29,442 INFO L82 PathProgramCache]: Analyzing trace with hash 858081470, now seen corresponding path program 2 times [2020-10-11 15:59:29,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:59:29,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453485015] [2020-10-11 15:59:29,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:59:29,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:59:29,484 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-11 15:59:29,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453485015] [2020-10-11 15:59:29,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:59:29,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-11 15:59:29,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584403462] [2020-10-11 15:59:29,486 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 15:59:29,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:59:29,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 15:59:29,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-11 15:59:29,486 INFO L87 Difference]: Start difference. First operand 23629 states and 124418 transitions. Second operand 7 states. [2020-10-11 15:59:30,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:59:30,104 INFO L93 Difference]: Finished difference Result 58078 states and 269185 transitions. [2020-10-11 15:59:30,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 15:59:30,104 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-11 15:59:30,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:59:30,268 INFO L225 Difference]: With dead ends: 58078 [2020-10-11 15:59:30,268 INFO L226 Difference]: Without dead ends: 58061 [2020-10-11 15:59:30,269 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-11 15:59:30,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58061 states. [2020-10-11 15:59:34,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58061 to 23109. [2020-10-11 15:59:34,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23109 states. [2020-10-11 15:59:34,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23109 states to 23109 states and 121651 transitions. [2020-10-11 15:59:34,364 INFO L78 Accepts]: Start accepts. Automaton has 23109 states and 121651 transitions. Word has length 15 [2020-10-11 15:59:34,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:59:34,364 INFO L481 AbstractCegarLoop]: Abstraction has 23109 states and 121651 transitions. [2020-10-11 15:59:34,364 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 15:59:34,364 INFO L276 IsEmpty]: Start isEmpty. Operand 23109 states and 121651 transitions. [2020-10-11 15:59:34,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-11 15:59:34,365 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:59:34,365 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:59:34,365 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2020-10-11 15:59:34,365 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:59:34,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:59:34,365 INFO L82 PathProgramCache]: Analyzing trace with hash 704376303, now seen corresponding path program 1 times [2020-10-11 15:59:34,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:59:34,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614254971] [2020-10-11 15:59:34,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:59:34,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:59:34,407 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-11 15:59:34,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614254971] [2020-10-11 15:59:34,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:59:34,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 15:59:34,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423190236] [2020-10-11 15:59:34,408 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-11 15:59:34,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:59:34,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-11 15:59:34,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-11 15:59:34,408 INFO L87 Difference]: Start difference. First operand 23109 states and 121651 transitions. Second operand 5 states. [2020-10-11 15:59:34,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:59:34,744 INFO L93 Difference]: Finished difference Result 41885 states and 209629 transitions. [2020-10-11 15:59:34,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-11 15:59:34,745 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-11 15:59:34,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:59:34,867 INFO L225 Difference]: With dead ends: 41885 [2020-10-11 15:59:34,867 INFO L226 Difference]: Without dead ends: 41856 [2020-10-11 15:59:34,867 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-11 15:59:35,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41856 states. [2020-10-11 15:59:36,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41856 to 28237. [2020-10-11 15:59:36,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28237 states. [2020-10-11 15:59:36,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28237 states to 28237 states and 150261 transitions. [2020-10-11 15:59:36,139 INFO L78 Accepts]: Start accepts. Automaton has 28237 states and 150261 transitions. Word has length 17 [2020-10-11 15:59:36,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:59:36,139 INFO L481 AbstractCegarLoop]: Abstraction has 28237 states and 150261 transitions. [2020-10-11 15:59:36,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-11 15:59:36,140 INFO L276 IsEmpty]: Start isEmpty. Operand 28237 states and 150261 transitions. [2020-10-11 15:59:36,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-11 15:59:36,140 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:59:36,140 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:59:36,140 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2020-10-11 15:59:36,141 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:59:36,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:59:36,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1918672061, now seen corresponding path program 1 times [2020-10-11 15:59:36,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:59:36,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496576850] [2020-10-11 15:59:36,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:59:36,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:59:36,180 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-11 15:59:36,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496576850] [2020-10-11 15:59:36,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500367076] [2020-10-11 15:59:36,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 15:59:36,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:59:36,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-11 15:59:36,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 15:59:36,337 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-11 15:59:36,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 15:59:36,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-11 15:59:36,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837747190] [2020-10-11 15:59:36,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-11 15:59:36,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:59:36,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-11 15:59:36,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-11 15:59:36,339 INFO L87 Difference]: Start difference. First operand 28237 states and 150261 transitions. Second operand 12 states. [2020-10-11 15:59:36,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:59:36,995 INFO L93 Difference]: Finished difference Result 66831 states and 314874 transitions. [2020-10-11 15:59:36,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 15:59:36,995 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-10-11 15:59:36,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:59:37,191 INFO L225 Difference]: With dead ends: 66831 [2020-10-11 15:59:37,191 INFO L226 Difference]: Without dead ends: 66807 [2020-10-11 15:59:37,191 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-11 15:59:38,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66807 states. [2020-10-11 15:59:39,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66807 to 28673. [2020-10-11 15:59:39,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28673 states. [2020-10-11 15:59:39,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28673 states to 28673 states and 152375 transitions. [2020-10-11 15:59:39,498 INFO L78 Accepts]: Start accepts. Automaton has 28673 states and 152375 transitions. Word has length 19 [2020-10-11 15:59:39,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:59:39,498 INFO L481 AbstractCegarLoop]: Abstraction has 28673 states and 152375 transitions. [2020-10-11 15:59:39,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-11 15:59:39,499 INFO L276 IsEmpty]: Start isEmpty. Operand 28673 states and 152375 transitions. [2020-10-11 15:59:39,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-11 15:59:39,504 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:59:39,504 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:59:39,715 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable81 [2020-10-11 15:59:39,716 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:59:39,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:59:39,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1064014108, now seen corresponding path program 1 times [2020-10-11 15:59:39,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:59:39,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721105986] [2020-10-11 15:59:39,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:59:39,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:59:39,759 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-11 15:59:39,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721105986] [2020-10-11 15:59:39,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623154496] [2020-10-11 15:59:39,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 15:59:39,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:59:39,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-11 15:59:39,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 15:59:39,907 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-11 15:59:39,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 15:59:39,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-11 15:59:39,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575233003] [2020-10-11 15:59:39,908 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-11 15:59:39,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:59:39,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-11 15:59:39,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-11 15:59:39,909 INFO L87 Difference]: Start difference. First operand 28673 states and 152375 transitions. Second operand 12 states. [2020-10-11 15:59:40,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:59:40,619 INFO L93 Difference]: Finished difference Result 69484 states and 328264 transitions. [2020-10-11 15:59:40,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 15:59:40,620 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-10-11 15:59:40,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:59:40,825 INFO L225 Difference]: With dead ends: 69484 [2020-10-11 15:59:40,825 INFO L226 Difference]: Without dead ends: 69451 [2020-10-11 15:59:40,825 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-11 15:59:41,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69451 states. [2020-10-11 15:59:42,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69451 to 28873. [2020-10-11 15:59:42,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28873 states. [2020-10-11 15:59:42,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28873 states to 28873 states and 153454 transitions. [2020-10-11 15:59:42,535 INFO L78 Accepts]: Start accepts. Automaton has 28873 states and 153454 transitions. Word has length 19 [2020-10-11 15:59:42,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:59:42,535 INFO L481 AbstractCegarLoop]: Abstraction has 28873 states and 153454 transitions. [2020-10-11 15:59:42,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-11 15:59:42,535 INFO L276 IsEmpty]: Start isEmpty. Operand 28873 states and 153454 transitions. [2020-10-11 15:59:42,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-11 15:59:42,536 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:59:42,536 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:59:42,736 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 15:59:42,737 INFO L429 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:59:42,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:59:42,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1699177508, now seen corresponding path program 2 times [2020-10-11 15:59:42,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:59:42,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271513749] [2020-10-11 15:59:42,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:59:42,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:59:42,780 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-11 15:59:42,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271513749] [2020-10-11 15:59:42,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:59:42,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-11 15:59:42,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933190905] [2020-10-11 15:59:42,782 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 15:59:42,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:59:42,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 15:59:42,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-11 15:59:42,783 INFO L87 Difference]: Start difference. First operand 28873 states and 153454 transitions. Second operand 7 states. [2020-10-11 15:59:43,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:59:43,452 INFO L93 Difference]: Finished difference Result 70510 states and 333491 transitions. [2020-10-11 15:59:43,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 15:59:43,453 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-11 15:59:43,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:59:43,660 INFO L225 Difference]: With dead ends: 70510 [2020-10-11 15:59:43,660 INFO L226 Difference]: Without dead ends: 70477 [2020-10-11 15:59:43,660 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-11 15:59:44,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70477 states. [2020-10-11 15:59:45,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70477 to 28942. [2020-10-11 15:59:45,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28942 states. [2020-10-11 15:59:46,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28942 states to 28942 states and 153921 transitions. [2020-10-11 15:59:46,011 INFO L78 Accepts]: Start accepts. Automaton has 28942 states and 153921 transitions. Word has length 19 [2020-10-11 15:59:46,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:59:46,011 INFO L481 AbstractCegarLoop]: Abstraction has 28942 states and 153921 transitions. [2020-10-11 15:59:46,011 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 15:59:46,011 INFO L276 IsEmpty]: Start isEmpty. Operand 28942 states and 153921 transitions. [2020-10-11 15:59:46,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-11 15:59:46,012 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:59:46,012 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:59:46,012 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2020-10-11 15:59:46,012 INFO L429 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:59:46,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:59:46,012 INFO L82 PathProgramCache]: Analyzing trace with hash -1699205315, now seen corresponding path program 2 times [2020-10-11 15:59:46,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:59:46,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861786512] [2020-10-11 15:59:46,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:59:46,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:59:46,060 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-11 15:59:46,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861786512] [2020-10-11 15:59:46,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:59:46,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-11 15:59:46,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522610138] [2020-10-11 15:59:46,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 15:59:46,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:59:46,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 15:59:46,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-11 15:59:46,062 INFO L87 Difference]: Start difference. First operand 28942 states and 153921 transitions. Second operand 7 states. [2020-10-11 15:59:46,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:59:46,714 INFO L93 Difference]: Finished difference Result 70096 states and 331298 transitions. [2020-10-11 15:59:46,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 15:59:46,715 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-11 15:59:46,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:59:46,919 INFO L225 Difference]: With dead ends: 70096 [2020-10-11 15:59:46,919 INFO L226 Difference]: Without dead ends: 70063 [2020-10-11 15:59:46,919 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-11 15:59:47,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70063 states. [2020-10-11 15:59:48,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70063 to 29094. [2020-10-11 15:59:48,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29094 states. [2020-10-11 15:59:48,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29094 states to 29094 states and 154883 transitions. [2020-10-11 15:59:48,642 INFO L78 Accepts]: Start accepts. Automaton has 29094 states and 154883 transitions. Word has length 19 [2020-10-11 15:59:48,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:59:48,642 INFO L481 AbstractCegarLoop]: Abstraction has 29094 states and 154883 transitions. [2020-10-11 15:59:48,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 15:59:48,642 INFO L276 IsEmpty]: Start isEmpty. Operand 29094 states and 154883 transitions. [2020-10-11 15:59:48,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-11 15:59:48,643 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:59:48,643 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:59:48,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2020-10-11 15:59:48,644 INFO L429 AbstractCegarLoop]: === Iteration 11 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:59:48,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:59:48,644 INFO L82 PathProgramCache]: Analyzing trace with hash -228866966, now seen corresponding path program 1 times [2020-10-11 15:59:48,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:59:48,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077192428] [2020-10-11 15:59:48,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:59:48,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:59:48,722 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:59:48,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077192428] [2020-10-11 15:59:48,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305137942] [2020-10-11 15:59:48,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 15:59:48,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:59:48,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 15:59:48,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 15:59:48,904 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:59:48,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 15:59:48,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-11 15:59:48,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918161496] [2020-10-11 15:59:48,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-11 15:59:48,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:59:48,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-11 15:59:48,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-11 15:59:48,905 INFO L87 Difference]: Start difference. First operand 29094 states and 154883 transitions. Second operand 16 states. [2020-10-11 15:59:50,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:59:50,303 INFO L93 Difference]: Finished difference Result 100731 states and 448596 transitions. [2020-10-11 15:59:50,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 15:59:50,304 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-11 15:59:50,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:59:50,586 INFO L225 Difference]: With dead ends: 100731 [2020-10-11 15:59:50,586 INFO L226 Difference]: Without dead ends: 100715 [2020-10-11 15:59:50,586 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-11 15:59:52,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100715 states. [2020-10-11 15:59:53,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100715 to 28719. [2020-10-11 15:59:53,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28719 states. [2020-10-11 15:59:53,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28719 states to 28719 states and 152760 transitions. [2020-10-11 15:59:53,242 INFO L78 Accepts]: Start accepts. Automaton has 28719 states and 152760 transitions. Word has length 21 [2020-10-11 15:59:53,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:59:53,242 INFO L481 AbstractCegarLoop]: Abstraction has 28719 states and 152760 transitions. [2020-10-11 15:59:53,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-11 15:59:53,242 INFO L276 IsEmpty]: Start isEmpty. Operand 28719 states and 152760 transitions. [2020-10-11 15:59:53,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-11 15:59:53,243 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:59:53,243 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:59:53,444 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable85 [2020-10-11 15:59:53,444 INFO L429 AbstractCegarLoop]: === Iteration 12 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:59:53,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:59:53,445 INFO L82 PathProgramCache]: Analyzing trace with hash 1302908714, now seen corresponding path program 2 times [2020-10-11 15:59:53,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:59:53,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419261991] [2020-10-11 15:59:53,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:59:53,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:59:53,509 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-11 15:59:53,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419261991] [2020-10-11 15:59:53,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714338954] [2020-10-11 15:59:53,510 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 15:59:53,599 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 15:59:53,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 15:59:53,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 15:59:53,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 15:59:53,699 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-11 15:59:53,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 15:59:53,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-11 15:59:53,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723425136] [2020-10-11 15:59:53,700 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-11 15:59:53,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:59:53,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-11 15:59:53,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-11 15:59:53,701 INFO L87 Difference]: Start difference. First operand 28719 states and 152760 transitions. Second operand 16 states. [2020-10-11 15:59:55,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:59:55,158 INFO L93 Difference]: Finished difference Result 99876 states and 444348 transitions. [2020-10-11 15:59:55,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 15:59:55,158 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-11 15:59:55,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:59:55,439 INFO L225 Difference]: With dead ends: 99876 [2020-10-11 15:59:55,440 INFO L226 Difference]: Without dead ends: 99855 [2020-10-11 15:59:55,440 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-11 15:59:56,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99855 states. [2020-10-11 15:59:57,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99855 to 28343. [2020-10-11 15:59:57,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28343 states. [2020-10-11 15:59:58,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28343 states to 28343 states and 150639 transitions. [2020-10-11 15:59:58,412 INFO L78 Accepts]: Start accepts. Automaton has 28343 states and 150639 transitions. Word has length 21 [2020-10-11 15:59:58,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:59:58,412 INFO L481 AbstractCegarLoop]: Abstraction has 28343 states and 150639 transitions. [2020-10-11 15:59:58,413 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-11 15:59:58,413 INFO L276 IsEmpty]: Start isEmpty. Operand 28343 states and 150639 transitions. [2020-10-11 15:59:58,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-11 15:59:58,414 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:59:58,414 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:59:58,614 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 15:59:58,614 INFO L429 AbstractCegarLoop]: === Iteration 13 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:59:58,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:59:58,615 INFO L82 PathProgramCache]: Analyzing trace with hash -1149181014, now seen corresponding path program 3 times [2020-10-11 15:59:58,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:59:58,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025812883] [2020-10-11 15:59:58,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:59:58,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:59:58,679 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-11 15:59:58,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025812883] [2020-10-11 15:59:58,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693924196] [2020-10-11 15:59:58,680 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 15:59:58,760 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-11 15:59:58,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 15:59:58,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 15:59:58,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 15:59:58,863 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-11 15:59:58,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 15:59:58,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-11 15:59:58,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794230374] [2020-10-11 15:59:58,864 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-11 15:59:58,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:59:58,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-11 15:59:58,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-11 15:59:58,865 INFO L87 Difference]: Start difference. First operand 28343 states and 150639 transitions. Second operand 16 states. [2020-10-11 16:00:00,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:00:00,336 INFO L93 Difference]: Finished difference Result 100071 states and 445291 transitions. [2020-10-11 16:00:00,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 16:00:00,336 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-11 16:00:00,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:00:00,618 INFO L225 Difference]: With dead ends: 100071 [2020-10-11 16:00:00,618 INFO L226 Difference]: Without dead ends: 100055 [2020-10-11 16:00:00,618 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-11 16:00:01,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100055 states. [2020-10-11 16:00:02,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100055 to 27654. [2020-10-11 16:00:02,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27654 states. [2020-10-11 16:00:02,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27654 states to 27654 states and 147080 transitions. [2020-10-11 16:00:02,770 INFO L78 Accepts]: Start accepts. Automaton has 27654 states and 147080 transitions. Word has length 21 [2020-10-11 16:00:02,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:00:02,771 INFO L481 AbstractCegarLoop]: Abstraction has 27654 states and 147080 transitions. [2020-10-11 16:00:02,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-11 16:00:02,771 INFO L276 IsEmpty]: Start isEmpty. Operand 27654 states and 147080 transitions. [2020-10-11 16:00:02,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-11 16:00:02,772 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:00:02,772 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:00:02,982 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2020-10-11 16:00:02,984 INFO L429 AbstractCegarLoop]: === Iteration 14 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:00:02,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:00:02,984 INFO L82 PathProgramCache]: Analyzing trace with hash 315341610, now seen corresponding path program 4 times [2020-10-11 16:00:02,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:00:02,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506148456] [2020-10-11 16:00:02,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:00:02,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:00:03,055 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-11 16:00:03,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506148456] [2020-10-11 16:00:03,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983754323] [2020-10-11 16:00:03,056 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:00:03,155 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 16:00:03,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 16:00:03,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 16:00:03,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:00:03,258 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-11 16:00:03,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:00:03,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-11 16:00:03,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137615730] [2020-10-11 16:00:03,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-11 16:00:03,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:00:03,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-11 16:00:03,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-11 16:00:03,260 INFO L87 Difference]: Start difference. First operand 27654 states and 147080 transitions. Second operand 16 states. [2020-10-11 16:00:04,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:00:04,627 INFO L93 Difference]: Finished difference Result 99523 states and 442763 transitions. [2020-10-11 16:00:04,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 16:00:04,628 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-11 16:00:04,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:00:04,907 INFO L225 Difference]: With dead ends: 99523 [2020-10-11 16:00:04,907 INFO L226 Difference]: Without dead ends: 99502 [2020-10-11 16:00:04,907 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-11 16:00:06,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99502 states. [2020-10-11 16:00:07,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99502 to 27278. [2020-10-11 16:00:07,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27278 states. [2020-10-11 16:00:07,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27278 states to 27278 states and 144959 transitions. [2020-10-11 16:00:07,479 INFO L78 Accepts]: Start accepts. Automaton has 27278 states and 144959 transitions. Word has length 21 [2020-10-11 16:00:07,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:00:07,479 INFO L481 AbstractCegarLoop]: Abstraction has 27278 states and 144959 transitions. [2020-10-11 16:00:07,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-11 16:00:07,479 INFO L276 IsEmpty]: Start isEmpty. Operand 27278 states and 144959 transitions. [2020-10-11 16:00:07,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-11 16:00:07,480 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:00:07,480 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:00:07,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2020-10-11 16:00:07,681 INFO L429 AbstractCegarLoop]: === Iteration 15 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:00:07,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:00:07,682 INFO L82 PathProgramCache]: Analyzing trace with hash -822012438, now seen corresponding path program 5 times [2020-10-11 16:00:07,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:00:07,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755583078] [2020-10-11 16:00:07,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:00:07,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:00:07,752 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-11 16:00:07,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755583078] [2020-10-11 16:00:07,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:00:07,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 16:00:07,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875975255] [2020-10-11 16:00:07,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-11 16:00:07,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:00:07,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-11 16:00:07,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-11 16:00:07,753 INFO L87 Difference]: Start difference. First operand 27278 states and 144959 transitions. Second operand 9 states. [2020-10-11 16:00:09,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:00:09,165 INFO L93 Difference]: Finished difference Result 99710 states and 443686 transitions. [2020-10-11 16:00:09,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 16:00:09,166 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-11 16:00:09,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:00:09,447 INFO L225 Difference]: With dead ends: 99710 [2020-10-11 16:00:09,447 INFO L226 Difference]: Without dead ends: 99694 [2020-10-11 16:00:09,447 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-11 16:00:10,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99694 states. [2020-10-11 16:00:11,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99694 to 26597. [2020-10-11 16:00:11,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26597 states. [2020-10-11 16:00:11,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26597 states to 26597 states and 141420 transitions. [2020-10-11 16:00:11,570 INFO L78 Accepts]: Start accepts. Automaton has 26597 states and 141420 transitions. Word has length 21 [2020-10-11 16:00:11,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:00:11,571 INFO L481 AbstractCegarLoop]: Abstraction has 26597 states and 141420 transitions. [2020-10-11 16:00:11,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-11 16:00:11,571 INFO L276 IsEmpty]: Start isEmpty. Operand 26597 states and 141420 transitions. [2020-10-11 16:00:11,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-11 16:00:11,572 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:00:11,572 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:00:11,572 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2020-10-11 16:00:11,572 INFO L429 AbstractCegarLoop]: === Iteration 16 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:00:11,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:00:11,572 INFO L82 PathProgramCache]: Analyzing trace with hash -848707158, now seen corresponding path program 6 times [2020-10-11 16:00:11,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:00:11,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459190939] [2020-10-11 16:00:11,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:00:11,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:00:11,639 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-11 16:00:11,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459190939] [2020-10-11 16:00:11,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:00:11,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 16:00:11,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996797440] [2020-10-11 16:00:11,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-11 16:00:11,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:00:11,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-11 16:00:11,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-11 16:00:11,642 INFO L87 Difference]: Start difference. First operand 26597 states and 141420 transitions. Second operand 9 states. [2020-10-11 16:00:13,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:00:13,013 INFO L93 Difference]: Finished difference Result 98863 states and 439458 transitions. [2020-10-11 16:00:13,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 16:00:13,014 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-11 16:00:13,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:00:13,291 INFO L225 Difference]: With dead ends: 98863 [2020-10-11 16:00:13,291 INFO L226 Difference]: Without dead ends: 98841 [2020-10-11 16:00:13,291 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-11 16:00:14,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98841 states. [2020-10-11 16:00:15,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98841 to 25744. [2020-10-11 16:00:15,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25744 states. [2020-10-11 16:00:15,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25744 states to 25744 states and 137181 transitions. [2020-10-11 16:00:15,781 INFO L78 Accepts]: Start accepts. Automaton has 25744 states and 137181 transitions. Word has length 21 [2020-10-11 16:00:15,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:00:15,782 INFO L481 AbstractCegarLoop]: Abstraction has 25744 states and 137181 transitions. [2020-10-11 16:00:15,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-11 16:00:15,782 INFO L276 IsEmpty]: Start isEmpty. Operand 25744 states and 137181 transitions. [2020-10-11 16:00:15,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-11 16:00:15,783 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:00:15,783 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:00:15,783 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2020-10-11 16:00:15,783 INFO L429 AbstractCegarLoop]: === Iteration 17 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:00:15,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:00:15,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1818695965, now seen corresponding path program 1 times [2020-10-11 16:00:15,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:00:15,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095794231] [2020-10-11 16:00:15,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:00:15,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:00:15,810 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-11 16:00:15,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095794231] [2020-10-11 16:00:15,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:00:15,810 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 16:00:15,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891305405] [2020-10-11 16:00:15,810 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-11 16:00:15,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:00:15,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-11 16:00:15,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-11 16:00:15,811 INFO L87 Difference]: Start difference. First operand 25744 states and 137181 transitions. Second operand 5 states. [2020-10-11 16:00:16,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:00:16,162 INFO L93 Difference]: Finished difference Result 46463 states and 236107 transitions. [2020-10-11 16:00:16,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-11 16:00:16,163 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-11 16:00:16,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:00:16,300 INFO L225 Difference]: With dead ends: 46463 [2020-10-11 16:00:16,301 INFO L226 Difference]: Without dead ends: 46417 [2020-10-11 16:00:16,301 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-11 16:00:16,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46417 states. [2020-10-11 16:00:17,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46417 to 31960. [2020-10-11 16:00:17,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31960 states. [2020-10-11 16:00:17,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31960 states to 31960 states and 171209 transitions. [2020-10-11 16:00:17,690 INFO L78 Accepts]: Start accepts. Automaton has 31960 states and 171209 transitions. Word has length 21 [2020-10-11 16:00:17,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:00:17,690 INFO L481 AbstractCegarLoop]: Abstraction has 31960 states and 171209 transitions. [2020-10-11 16:00:17,690 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-11 16:00:17,690 INFO L276 IsEmpty]: Start isEmpty. Operand 31960 states and 171209 transitions. [2020-10-11 16:00:17,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-11 16:00:17,692 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:00:17,692 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:00:17,692 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2020-10-11 16:00:17,692 INFO L429 AbstractCegarLoop]: === Iteration 18 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:00:17,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:00:17,692 INFO L82 PathProgramCache]: Analyzing trace with hash 605532395, now seen corresponding path program 1 times [2020-10-11 16:00:17,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:00:17,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528375947] [2020-10-11 16:00:17,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:00:17,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:00:17,737 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-11 16:00:17,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528375947] [2020-10-11 16:00:17,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471030364] [2020-10-11 16:00:17,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:00:17,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:00:17,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-11 16:00:17,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:00:17,887 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-11 16:00:17,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:00:17,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-11 16:00:17,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624531855] [2020-10-11 16:00:17,888 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-11 16:00:17,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:00:17,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-11 16:00:17,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-11 16:00:17,889 INFO L87 Difference]: Start difference. First operand 31960 states and 171209 transitions. Second operand 12 states. [2020-10-11 16:00:18,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:00:18,726 INFO L93 Difference]: Finished difference Result 75380 states and 361389 transitions. [2020-10-11 16:00:18,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 16:00:18,726 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-10-11 16:00:18,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:00:18,949 INFO L225 Difference]: With dead ends: 75380 [2020-10-11 16:00:18,949 INFO L226 Difference]: Without dead ends: 75344 [2020-10-11 16:00:18,949 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-11 16:00:19,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75344 states. [2020-10-11 16:00:20,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75344 to 32974. [2020-10-11 16:00:20,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32974 states. [2020-10-11 16:00:20,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32974 states to 32974 states and 176363 transitions. [2020-10-11 16:00:20,818 INFO L78 Accepts]: Start accepts. Automaton has 32974 states and 176363 transitions. Word has length 23 [2020-10-11 16:00:20,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:00:20,818 INFO L481 AbstractCegarLoop]: Abstraction has 32974 states and 176363 transitions. [2020-10-11 16:00:20,818 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-11 16:00:20,818 INFO L276 IsEmpty]: Start isEmpty. Operand 32974 states and 176363 transitions. [2020-10-11 16:00:20,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-11 16:00:20,820 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:00:20,820 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:00:21,020 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:00:21,020 INFO L429 AbstractCegarLoop]: === Iteration 19 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:00:21,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:00:21,021 INFO L82 PathProgramCache]: Analyzing trace with hash 768040394, now seen corresponding path program 1 times [2020-10-11 16:00:21,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:00:21,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885790348] [2020-10-11 16:00:21,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:00:21,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:00:21,065 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-11 16:00:21,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885790348] [2020-10-11 16:00:21,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385671131] [2020-10-11 16:00:21,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:00:21,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:00:21,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-11 16:00:21,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:00:21,217 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-11 16:00:21,217 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:00:21,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-11 16:00:21,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676956087] [2020-10-11 16:00:21,218 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-11 16:00:21,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:00:21,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-11 16:00:21,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-11 16:00:21,219 INFO L87 Difference]: Start difference. First operand 32974 states and 176363 transitions. Second operand 12 states. [2020-10-11 16:00:22,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:00:22,244 INFO L93 Difference]: Finished difference Result 79487 states and 381757 transitions. [2020-10-11 16:00:22,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 16:00:22,245 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-10-11 16:00:22,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:00:22,483 INFO L225 Difference]: With dead ends: 79487 [2020-10-11 16:00:22,483 INFO L226 Difference]: Without dead ends: 79445 [2020-10-11 16:00:22,484 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-11 16:00:23,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79445 states. [2020-10-11 16:00:24,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79445 to 33981. [2020-10-11 16:00:24,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33981 states. [2020-10-11 16:00:24,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33981 states to 33981 states and 181710 transitions. [2020-10-11 16:00:24,419 INFO L78 Accepts]: Start accepts. Automaton has 33981 states and 181710 transitions. Word has length 23 [2020-10-11 16:00:24,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:00:24,419 INFO L481 AbstractCegarLoop]: Abstraction has 33981 states and 181710 transitions. [2020-10-11 16:00:24,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-11 16:00:24,419 INFO L276 IsEmpty]: Start isEmpty. Operand 33981 states and 181710 transitions. [2020-10-11 16:00:24,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-11 16:00:24,421 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:00:24,421 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:00:24,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:00:24,622 INFO L429 AbstractCegarLoop]: === Iteration 20 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:00:24,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:00:24,622 INFO L82 PathProgramCache]: Analyzing trace with hash 1041867770, now seen corresponding path program 1 times [2020-10-11 16:00:24,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:00:24,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446473655] [2020-10-11 16:00:24,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:00:24,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:00:24,672 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-11 16:00:24,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446473655] [2020-10-11 16:00:24,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410247609] [2020-10-11 16:00:24,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:00:24,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:00:24,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-11 16:00:24,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:00:24,819 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-11 16:00:24,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:00:24,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-11 16:00:24,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727298987] [2020-10-11 16:00:24,820 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-11 16:00:24,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:00:24,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-11 16:00:24,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-11 16:00:24,820 INFO L87 Difference]: Start difference. First operand 33981 states and 181710 transitions. Second operand 12 states. [2020-10-11 16:00:25,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:00:25,590 INFO L93 Difference]: Finished difference Result 82728 states and 398553 transitions. [2020-10-11 16:00:25,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 16:00:25,591 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-10-11 16:00:25,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:00:25,858 INFO L225 Difference]: With dead ends: 82728 [2020-10-11 16:00:25,859 INFO L226 Difference]: Without dead ends: 82673 [2020-10-11 16:00:25,859 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-11 16:00:26,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82673 states. [2020-10-11 16:00:27,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82673 to 34821. [2020-10-11 16:00:27,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34821 states. [2020-10-11 16:00:27,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34821 states to 34821 states and 186422 transitions. [2020-10-11 16:00:27,867 INFO L78 Accepts]: Start accepts. Automaton has 34821 states and 186422 transitions. Word has length 23 [2020-10-11 16:00:27,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:00:27,867 INFO L481 AbstractCegarLoop]: Abstraction has 34821 states and 186422 transitions. [2020-10-11 16:00:27,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-11 16:00:27,867 INFO L276 IsEmpty]: Start isEmpty. Operand 34821 states and 186422 transitions. [2020-10-11 16:00:27,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-11 16:00:27,869 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:00:27,869 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:00:28,069 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:00:28,070 INFO L429 AbstractCegarLoop]: === Iteration 21 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:00:28,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:00:28,070 INFO L82 PathProgramCache]: Analyzing trace with hash -284839030, now seen corresponding path program 2 times [2020-10-11 16:00:28,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:00:28,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856497390] [2020-10-11 16:00:28,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:00:28,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:00:28,116 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-11 16:00:28,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856497390] [2020-10-11 16:00:28,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:00:28,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-11 16:00:28,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562901549] [2020-10-11 16:00:28,117 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 16:00:28,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:00:28,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 16:00:28,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-11 16:00:28,118 INFO L87 Difference]: Start difference. First operand 34821 states and 186422 transitions. Second operand 7 states. [2020-10-11 16:00:28,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:00:28,849 INFO L93 Difference]: Finished difference Result 83507 states and 402693 transitions. [2020-10-11 16:00:28,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 16:00:28,850 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-11 16:00:28,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:00:29,103 INFO L225 Difference]: With dead ends: 83507 [2020-10-11 16:00:29,104 INFO L226 Difference]: Without dead ends: 83452 [2020-10-11 16:00:29,104 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-11 16:00:30,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83452 states. [2020-10-11 16:00:31,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83452 to 35694. [2020-10-11 16:00:31,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35694 states. [2020-10-11 16:00:31,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35694 states to 35694 states and 191145 transitions. [2020-10-11 16:00:31,755 INFO L78 Accepts]: Start accepts. Automaton has 35694 states and 191145 transitions. Word has length 23 [2020-10-11 16:00:31,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:00:31,755 INFO L481 AbstractCegarLoop]: Abstraction has 35694 states and 191145 transitions. [2020-10-11 16:00:31,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 16:00:31,755 INFO L276 IsEmpty]: Start isEmpty. Operand 35694 states and 191145 transitions. [2020-10-11 16:00:31,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-11 16:00:31,757 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:00:31,757 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:00:31,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2020-10-11 16:00:31,757 INFO L429 AbstractCegarLoop]: === Iteration 22 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:00:31,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:00:31,758 INFO L82 PathProgramCache]: Analyzing trace with hash -284850438, now seen corresponding path program 2 times [2020-10-11 16:00:31,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:00:31,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441178732] [2020-10-11 16:00:31,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:00:31,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:00:31,801 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-11 16:00:31,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441178732] [2020-10-11 16:00:31,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:00:31,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-11 16:00:31,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435362208] [2020-10-11 16:00:31,802 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 16:00:31,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:00:31,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 16:00:31,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-11 16:00:31,803 INFO L87 Difference]: Start difference. First operand 35694 states and 191145 transitions. Second operand 7 states. [2020-10-11 16:00:32,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:00:32,598 INFO L93 Difference]: Finished difference Result 83523 states and 402462 transitions. [2020-10-11 16:00:32,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 16:00:32,598 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-11 16:00:32,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:00:32,853 INFO L225 Difference]: With dead ends: 83523 [2020-10-11 16:00:32,853 INFO L226 Difference]: Without dead ends: 83468 [2020-10-11 16:00:32,854 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-11 16:00:33,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83468 states. [2020-10-11 16:00:34,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83468 to 36306. [2020-10-11 16:00:34,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36306 states. [2020-10-11 16:00:34,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36306 states to 36306 states and 194552 transitions. [2020-10-11 16:00:34,881 INFO L78 Accepts]: Start accepts. Automaton has 36306 states and 194552 transitions. Word has length 23 [2020-10-11 16:00:34,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:00:34,881 INFO L481 AbstractCegarLoop]: Abstraction has 36306 states and 194552 transitions. [2020-10-11 16:00:34,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 16:00:34,881 INFO L276 IsEmpty]: Start isEmpty. Operand 36306 states and 194552 transitions. [2020-10-11 16:00:34,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-11 16:00:34,883 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:00:34,883 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:00:34,884 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2020-10-11 16:00:34,884 INFO L429 AbstractCegarLoop]: === Iteration 23 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:00:34,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:00:34,884 INFO L82 PathProgramCache]: Analyzing trace with hash -284866837, now seen corresponding path program 2 times [2020-10-11 16:00:34,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:00:34,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442427655] [2020-10-11 16:00:34,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:00:34,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:00:34,929 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-11 16:00:34,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442427655] [2020-10-11 16:00:34,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:00:34,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-11 16:00:34,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194455512] [2020-10-11 16:00:34,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 16:00:34,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:00:34,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 16:00:34,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-11 16:00:34,931 INFO L87 Difference]: Start difference. First operand 36306 states and 194552 transitions. Second operand 7 states. [2020-10-11 16:00:35,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:00:35,672 INFO L93 Difference]: Finished difference Result 83918 states and 404136 transitions. [2020-10-11 16:00:35,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 16:00:35,672 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-11 16:00:35,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:00:35,928 INFO L225 Difference]: With dead ends: 83918 [2020-10-11 16:00:35,928 INFO L226 Difference]: Without dead ends: 83863 [2020-10-11 16:00:35,928 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-11 16:00:36,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83863 states. [2020-10-11 16:00:37,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83863 to 37062. [2020-10-11 16:00:37,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37062 states. [2020-10-11 16:00:37,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37062 states to 37062 states and 198528 transitions. [2020-10-11 16:00:37,944 INFO L78 Accepts]: Start accepts. Automaton has 37062 states and 198528 transitions. Word has length 23 [2020-10-11 16:00:37,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:00:37,945 INFO L481 AbstractCegarLoop]: Abstraction has 37062 states and 198528 transitions. [2020-10-11 16:00:37,945 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 16:00:37,945 INFO L276 IsEmpty]: Start isEmpty. Operand 37062 states and 198528 transitions. [2020-10-11 16:00:37,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-11 16:00:37,947 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:00:37,948 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:00:37,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2020-10-11 16:00:37,948 INFO L429 AbstractCegarLoop]: === Iteration 24 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:00:37,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:00:37,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1146013160, now seen corresponding path program 1 times [2020-10-11 16:00:37,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:00:37,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591085441] [2020-10-11 16:00:37,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:00:37,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:00:38,017 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-11 16:00:38,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591085441] [2020-10-11 16:00:38,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108708660] [2020-10-11 16:00:38,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:00:38,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:00:38,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 16:00:38,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:00:38,211 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-11 16:00:38,211 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:00:38,211 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-11 16:00:38,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755151987] [2020-10-11 16:00:38,212 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-11 16:00:38,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:00:38,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-11 16:00:38,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-11 16:00:38,212 INFO L87 Difference]: Start difference. First operand 37062 states and 198528 transitions. Second operand 16 states. [2020-10-11 16:00:40,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:00:40,467 INFO L93 Difference]: Finished difference Result 122892 states and 561130 transitions. [2020-10-11 16:00:40,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 16:00:40,468 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-11 16:00:40,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:00:40,833 INFO L225 Difference]: With dead ends: 122892 [2020-10-11 16:00:40,833 INFO L226 Difference]: Without dead ends: 122862 [2020-10-11 16:00:40,835 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-11 16:00:42,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122862 states. [2020-10-11 16:00:43,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122862 to 36727. [2020-10-11 16:00:43,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36727 states. [2020-10-11 16:00:43,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36727 states to 36727 states and 196466 transitions. [2020-10-11 16:00:43,470 INFO L78 Accepts]: Start accepts. Automaton has 36727 states and 196466 transitions. Word has length 25 [2020-10-11 16:00:43,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:00:43,471 INFO L481 AbstractCegarLoop]: Abstraction has 36727 states and 196466 transitions. [2020-10-11 16:00:43,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-11 16:00:43,471 INFO L276 IsEmpty]: Start isEmpty. Operand 36727 states and 196466 transitions. [2020-10-11 16:00:43,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-11 16:00:43,473 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:00:43,474 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:00:43,674 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2020-10-11 16:00:43,674 INFO L429 AbstractCegarLoop]: === Iteration 25 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:00:43,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:00:43,675 INFO L82 PathProgramCache]: Analyzing trace with hash -872185784, now seen corresponding path program 1 times [2020-10-11 16:00:43,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:00:43,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266195572] [2020-10-11 16:00:43,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:00:43,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:00:43,744 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-11 16:00:43,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266195572] [2020-10-11 16:00:43,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504282026] [2020-10-11 16:00:43,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:00:43,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:00:43,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 16:00:43,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:00:43,936 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-11 16:00:43,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:00:43,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-11 16:00:43,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479440951] [2020-10-11 16:00:43,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-11 16:00:43,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:00:43,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-11 16:00:43,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-11 16:00:43,937 INFO L87 Difference]: Start difference. First operand 36727 states and 196466 transitions. Second operand 16 states. [2020-10-11 16:00:45,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:00:45,685 INFO L93 Difference]: Finished difference Result 121590 states and 554657 transitions. [2020-10-11 16:00:45,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 16:00:45,686 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-11 16:00:45,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:00:46,038 INFO L225 Difference]: With dead ends: 121590 [2020-10-11 16:00:46,038 INFO L226 Difference]: Without dead ends: 121560 [2020-10-11 16:00:46,038 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-11 16:00:47,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121560 states. [2020-10-11 16:00:48,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121560 to 36513. [2020-10-11 16:00:48,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36513 states. [2020-10-11 16:00:48,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36513 states to 36513 states and 195090 transitions. [2020-10-11 16:00:48,687 INFO L78 Accepts]: Start accepts. Automaton has 36513 states and 195090 transitions. Word has length 25 [2020-10-11 16:00:48,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:00:48,687 INFO L481 AbstractCegarLoop]: Abstraction has 36513 states and 195090 transitions. [2020-10-11 16:00:48,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-11 16:00:48,687 INFO L276 IsEmpty]: Start isEmpty. Operand 36513 states and 195090 transitions. [2020-10-11 16:00:48,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-11 16:00:48,691 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:00:48,691 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:00:48,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:00:48,897 INFO L429 AbstractCegarLoop]: === Iteration 26 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:00:48,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:00:48,897 INFO L82 PathProgramCache]: Analyzing trace with hash 2096074712, now seen corresponding path program 2 times [2020-10-11 16:00:48,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:00:48,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955613287] [2020-10-11 16:00:48,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:00:48,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:00:48,963 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-11 16:00:48,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955613287] [2020-10-11 16:00:48,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131877110] [2020-10-11 16:00:48,963 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:00:49,050 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 16:00:49,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 16:00:49,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 16:00:49,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:00:49,155 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-11 16:00:49,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:00:49,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-11 16:00:49,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516740938] [2020-10-11 16:00:49,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-11 16:00:49,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:00:49,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-11 16:00:49,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-11 16:00:49,157 INFO L87 Difference]: Start difference. First operand 36513 states and 195090 transitions. Second operand 16 states. [2020-10-11 16:00:50,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:00:50,996 INFO L93 Difference]: Finished difference Result 120395 states and 548664 transitions. [2020-10-11 16:00:50,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 16:00:50,997 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-11 16:00:50,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:00:51,351 INFO L225 Difference]: With dead ends: 120395 [2020-10-11 16:00:51,352 INFO L226 Difference]: Without dead ends: 120362 [2020-10-11 16:00:51,352 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-11 16:00:52,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120362 states. [2020-10-11 16:00:53,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120362 to 36444. [2020-10-11 16:00:53,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36444 states. [2020-10-11 16:00:53,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36444 states to 36444 states and 194571 transitions. [2020-10-11 16:00:53,964 INFO L78 Accepts]: Start accepts. Automaton has 36444 states and 194571 transitions. Word has length 25 [2020-10-11 16:00:53,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:00:53,964 INFO L481 AbstractCegarLoop]: Abstraction has 36444 states and 194571 transitions. [2020-10-11 16:00:53,964 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-11 16:00:53,965 INFO L276 IsEmpty]: Start isEmpty. Operand 36444 states and 194571 transitions. [2020-10-11 16:00:53,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-11 16:00:53,967 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:00:53,967 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:00:54,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2020-10-11 16:00:54,168 INFO L429 AbstractCegarLoop]: === Iteration 27 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:00:54,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:00:54,168 INFO L82 PathProgramCache]: Analyzing trace with hash 2096063304, now seen corresponding path program 2 times [2020-10-11 16:00:54,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:00:54,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505326700] [2020-10-11 16:00:54,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:00:54,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:00:54,234 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-11 16:00:54,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505326700] [2020-10-11 16:00:54,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404412215] [2020-10-11 16:00:54,234 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:00:54,320 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 16:00:54,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 16:00:54,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 16:00:54,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:00:54,426 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-11 16:00:54,427 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:00:54,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-11 16:00:54,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806249180] [2020-10-11 16:00:54,428 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-11 16:00:54,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:00:54,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-11 16:00:54,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-11 16:00:54,429 INFO L87 Difference]: Start difference. First operand 36444 states and 194571 transitions. Second operand 16 states. [2020-10-11 16:00:56,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:00:56,054 INFO L93 Difference]: Finished difference Result 119346 states and 543724 transitions. [2020-10-11 16:00:56,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 16:00:56,055 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-11 16:00:56,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:00:56,406 INFO L225 Difference]: With dead ends: 119346 [2020-10-11 16:00:56,406 INFO L226 Difference]: Without dead ends: 119313 [2020-10-11 16:00:56,406 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-11 16:00:57,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119313 states. [2020-10-11 16:00:58,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119313 to 36040. [2020-10-11 16:00:58,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36040 states. [2020-10-11 16:00:58,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36040 states to 36040 states and 192287 transitions. [2020-10-11 16:00:58,963 INFO L78 Accepts]: Start accepts. Automaton has 36040 states and 192287 transitions. Word has length 25 [2020-10-11 16:00:58,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:00:58,963 INFO L481 AbstractCegarLoop]: Abstraction has 36040 states and 192287 transitions. [2020-10-11 16:00:58,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-11 16:00:58,964 INFO L276 IsEmpty]: Start isEmpty. Operand 36040 states and 192287 transitions. [2020-10-11 16:00:58,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-11 16:00:58,966 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:00:58,966 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:00:59,166 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2020-10-11 16:00:59,167 INFO L429 AbstractCegarLoop]: === Iteration 28 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:00:59,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:00:59,167 INFO L82 PathProgramCache]: Analyzing trace with hash 582269272, now seen corresponding path program 3 times [2020-10-11 16:00:59,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:00:59,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047303211] [2020-10-11 16:00:59,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:00:59,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:00:59,793 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-11 16:00:59,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047303211] [2020-10-11 16:00:59,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236286871] [2020-10-11 16:00:59,794 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:00:59,880 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-11 16:00:59,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 16:00:59,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 16:00:59,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:00:59,983 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-11 16:00:59,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:00:59,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-11 16:00:59,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681210565] [2020-10-11 16:00:59,984 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-11 16:00:59,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:00:59,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-11 16:00:59,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-11 16:00:59,985 INFO L87 Difference]: Start difference. First operand 36040 states and 192287 transitions. Second operand 16 states. [2020-10-11 16:01:01,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:01:01,732 INFO L93 Difference]: Finished difference Result 119770 states and 545635 transitions. [2020-10-11 16:01:01,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 16:01:01,733 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-11 16:01:01,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:01:02,101 INFO L225 Difference]: With dead ends: 119770 [2020-10-11 16:01:02,101 INFO L226 Difference]: Without dead ends: 119740 [2020-10-11 16:01:02,101 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-11 16:01:03,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119740 states. [2020-10-11 16:01:04,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119740 to 35471. [2020-10-11 16:01:04,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35471 states. [2020-10-11 16:01:04,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35471 states to 35471 states and 189238 transitions. [2020-10-11 16:01:04,722 INFO L78 Accepts]: Start accepts. Automaton has 35471 states and 189238 transitions. Word has length 25 [2020-10-11 16:01:04,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:01:04,723 INFO L481 AbstractCegarLoop]: Abstraction has 35471 states and 189238 transitions. [2020-10-11 16:01:04,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-11 16:01:04,723 INFO L276 IsEmpty]: Start isEmpty. Operand 35471 states and 189238 transitions. [2020-10-11 16:01:04,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-11 16:01:04,725 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:01:04,725 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:01:04,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2020-10-11 16:01:04,926 INFO L429 AbstractCegarLoop]: === Iteration 29 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:01:04,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:01:04,926 INFO L82 PathProgramCache]: Analyzing trace with hash 679178599, now seen corresponding path program 1 times [2020-10-11 16:01:04,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:01:04,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440287324] [2020-10-11 16:01:04,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:01:04,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:01:04,990 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-11 16:01:04,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440287324] [2020-10-11 16:01:04,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938984652] [2020-10-11 16:01:04,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:01:05,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:01:05,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 16:01:05,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:01:05,184 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-11 16:01:05,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:01:05,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-11 16:01:05,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631542263] [2020-10-11 16:01:05,185 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-11 16:01:05,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:01:05,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-11 16:01:05,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-11 16:01:05,186 INFO L87 Difference]: Start difference. First operand 35471 states and 189238 transitions. Second operand 16 states. [2020-10-11 16:01:06,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:01:06,815 INFO L93 Difference]: Finished difference Result 121131 states and 553230 transitions. [2020-10-11 16:01:06,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 16:01:06,816 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-11 16:01:06,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:01:07,173 INFO L225 Difference]: With dead ends: 121131 [2020-10-11 16:01:07,173 INFO L226 Difference]: Without dead ends: 121101 [2020-10-11 16:01:07,174 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-11 16:01:08,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121101 states. [2020-10-11 16:01:10,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121101 to 35374. [2020-10-11 16:01:10,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35374 states. [2020-10-11 16:01:10,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35374 states to 35374 states and 188534 transitions. [2020-10-11 16:01:10,590 INFO L78 Accepts]: Start accepts. Automaton has 35374 states and 188534 transitions. Word has length 25 [2020-10-11 16:01:10,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:01:10,590 INFO L481 AbstractCegarLoop]: Abstraction has 35374 states and 188534 transitions. [2020-10-11 16:01:10,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-11 16:01:10,590 INFO L276 IsEmpty]: Start isEmpty. Operand 35374 states and 188534 transitions. [2020-10-11 16:01:10,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-11 16:01:10,592 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:01:10,592 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:01:10,793 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2020-10-11 16:01:10,793 INFO L429 AbstractCegarLoop]: === Iteration 30 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:01:10,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:01:10,794 INFO L82 PathProgramCache]: Analyzing trace with hash -647539609, now seen corresponding path program 2 times [2020-10-11 16:01:10,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:01:10,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041487859] [2020-10-11 16:01:10,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:01:10,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:01:10,860 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-11 16:01:10,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041487859] [2020-10-11 16:01:10,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377629883] [2020-10-11 16:01:10,860 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:01:10,945 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 16:01:10,945 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 16:01:10,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 16:01:10,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:01:11,055 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-11 16:01:11,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:01:11,056 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-11 16:01:11,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263168979] [2020-10-11 16:01:11,056 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-11 16:01:11,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:01:11,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-11 16:01:11,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-11 16:01:11,057 INFO L87 Difference]: Start difference. First operand 35374 states and 188534 transitions. Second operand 16 states. [2020-10-11 16:01:12,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:01:12,668 INFO L93 Difference]: Finished difference Result 120194 states and 548412 transitions. [2020-10-11 16:01:12,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 16:01:12,668 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-11 16:01:12,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:01:13,028 INFO L225 Difference]: With dead ends: 120194 [2020-10-11 16:01:13,028 INFO L226 Difference]: Without dead ends: 120154 [2020-10-11 16:01:13,029 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-11 16:01:14,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120154 states. [2020-10-11 16:01:15,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120154 to 35219. [2020-10-11 16:01:15,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35219 states. [2020-10-11 16:01:15,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35219 states to 35219 states and 187630 transitions. [2020-10-11 16:01:15,565 INFO L78 Accepts]: Start accepts. Automaton has 35219 states and 187630 transitions. Word has length 25 [2020-10-11 16:01:15,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:01:15,565 INFO L481 AbstractCegarLoop]: Abstraction has 35219 states and 187630 transitions. [2020-10-11 16:01:15,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-11 16:01:15,566 INFO L276 IsEmpty]: Start isEmpty. Operand 35219 states and 187630 transitions. [2020-10-11 16:01:15,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-11 16:01:15,568 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:01:15,568 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:01:15,768 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:01:15,769 INFO L429 AbstractCegarLoop]: === Iteration 31 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:01:15,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:01:15,769 INFO L82 PathProgramCache]: Analyzing trace with hash -647556008, now seen corresponding path program 4 times [2020-10-11 16:01:15,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:01:15,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544111256] [2020-10-11 16:01:15,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:01:15,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:01:15,836 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-11 16:01:15,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544111256] [2020-10-11 16:01:15,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741604153] [2020-10-11 16:01:15,837 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:01:15,922 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 16:01:15,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 16:01:15,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 16:01:15,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:01:16,032 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-11 16:01:16,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:01:16,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-11 16:01:16,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264272354] [2020-10-11 16:01:16,033 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-11 16:01:16,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:01:16,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-11 16:01:16,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-11 16:01:16,034 INFO L87 Difference]: Start difference. First operand 35219 states and 187630 transitions. Second operand 16 states. [2020-10-11 16:01:17,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:01:17,585 INFO L93 Difference]: Finished difference Result 118559 states and 539905 transitions. [2020-10-11 16:01:17,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 16:01:17,585 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-11 16:01:17,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:01:17,930 INFO L225 Difference]: With dead ends: 118559 [2020-10-11 16:01:17,931 INFO L226 Difference]: Without dead ends: 118526 [2020-10-11 16:01:17,931 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-11 16:01:19,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118526 states. [2020-10-11 16:01:20,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118526 to 34815. [2020-10-11 16:01:20,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34815 states. [2020-10-11 16:01:21,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34815 states to 34815 states and 185346 transitions. [2020-10-11 16:01:21,118 INFO L78 Accepts]: Start accepts. Automaton has 34815 states and 185346 transitions. Word has length 25 [2020-10-11 16:01:21,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:01:21,118 INFO L481 AbstractCegarLoop]: Abstraction has 34815 states and 185346 transitions. [2020-10-11 16:01:21,118 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-11 16:01:21,118 INFO L276 IsEmpty]: Start isEmpty. Operand 34815 states and 185346 transitions. [2020-10-11 16:01:21,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-11 16:01:21,121 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:01:21,121 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:01:21,328 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable105 [2020-10-11 16:01:21,329 INFO L429 AbstractCegarLoop]: === Iteration 32 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:01:21,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:01:21,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1056609241, now seen corresponding path program 3 times [2020-10-11 16:01:21,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:01:21,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932489919] [2020-10-11 16:01:21,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:01:21,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:01:21,404 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-11 16:01:21,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932489919] [2020-10-11 16:01:21,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747925215] [2020-10-11 16:01:21,405 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:01:21,487 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-11 16:01:21,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 16:01:21,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 16:01:21,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:01:21,588 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-11 16:01:21,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:01:21,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-11 16:01:21,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684380311] [2020-10-11 16:01:21,589 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-11 16:01:21,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:01:21,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-11 16:01:21,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-11 16:01:21,590 INFO L87 Difference]: Start difference. First operand 34815 states and 185346 transitions. Second operand 16 states. [2020-10-11 16:01:23,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:01:23,242 INFO L93 Difference]: Finished difference Result 118955 states and 542533 transitions. [2020-10-11 16:01:23,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 16:01:23,242 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-11 16:01:23,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:01:23,593 INFO L225 Difference]: With dead ends: 118955 [2020-10-11 16:01:23,593 INFO L226 Difference]: Without dead ends: 118925 [2020-10-11 16:01:23,593 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-11 16:01:24,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118925 states. [2020-10-11 16:01:25,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118925 to 34363. [2020-10-11 16:01:25,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34363 states. [2020-10-11 16:01:26,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34363 states to 34363 states and 182968 transitions. [2020-10-11 16:01:26,118 INFO L78 Accepts]: Start accepts. Automaton has 34363 states and 182968 transitions. Word has length 25 [2020-10-11 16:01:26,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:01:26,118 INFO L481 AbstractCegarLoop]: Abstraction has 34363 states and 182968 transitions. [2020-10-11 16:01:26,118 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-11 16:01:26,118 INFO L276 IsEmpty]: Start isEmpty. Operand 34363 states and 182968 transitions. [2020-10-11 16:01:26,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-11 16:01:26,120 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:01:26,120 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:01:26,321 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2020-10-11 16:01:26,321 INFO L429 AbstractCegarLoop]: === Iteration 33 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:01:26,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:01:26,322 INFO L82 PathProgramCache]: Analyzing trace with hash -989383992, now seen corresponding path program 3 times [2020-10-11 16:01:26,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:01:26,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873608279] [2020-10-11 16:01:26,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:01:26,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:01:26,386 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-11 16:01:26,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873608279] [2020-10-11 16:01:26,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955725919] [2020-10-11 16:01:26,386 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:01:26,468 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-11 16:01:26,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 16:01:26,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 16:01:26,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:01:26,577 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-11 16:01:26,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:01:26,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-11 16:01:26,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609853048] [2020-10-11 16:01:26,579 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-11 16:01:26,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:01:26,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-11 16:01:26,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-11 16:01:26,580 INFO L87 Difference]: Start difference. First operand 34363 states and 182968 transitions. Second operand 16 states. [2020-10-11 16:01:28,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:01:28,335 INFO L93 Difference]: Finished difference Result 117996 states and 537739 transitions. [2020-10-11 16:01:28,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 16:01:28,336 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-11 16:01:28,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:01:28,683 INFO L225 Difference]: With dead ends: 117996 [2020-10-11 16:01:28,683 INFO L226 Difference]: Without dead ends: 117966 [2020-10-11 16:01:28,683 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-11 16:01:29,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117966 states. [2020-10-11 16:01:31,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117966 to 34024. [2020-10-11 16:01:31,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34024 states. [2020-10-11 16:01:31,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34024 states to 34024 states and 181250 transitions. [2020-10-11 16:01:31,834 INFO L78 Accepts]: Start accepts. Automaton has 34024 states and 181250 transitions. Word has length 25 [2020-10-11 16:01:31,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:01:31,834 INFO L481 AbstractCegarLoop]: Abstraction has 34024 states and 181250 transitions. [2020-10-11 16:01:31,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-11 16:01:31,834 INFO L276 IsEmpty]: Start isEmpty. Operand 34024 states and 181250 transitions. [2020-10-11 16:01:31,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-11 16:01:31,836 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:01:31,836 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:01:32,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2020-10-11 16:01:32,037 INFO L429 AbstractCegarLoop]: === Iteration 34 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:01:32,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:01:32,038 INFO L82 PathProgramCache]: Analyzing trace with hash 507575079, now seen corresponding path program 4 times [2020-10-11 16:01:32,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:01:32,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263397855] [2020-10-11 16:01:32,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:01:32,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:01:32,104 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-11 16:01:32,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263397855] [2020-10-11 16:01:32,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578180831] [2020-10-11 16:01:32,105 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:01:32,192 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 16:01:32,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 16:01:32,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 16:01:32,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:01:32,295 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-11 16:01:32,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:01:32,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-11 16:01:32,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87006164] [2020-10-11 16:01:32,296 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-11 16:01:32,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:01:32,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-11 16:01:32,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-11 16:01:32,297 INFO L87 Difference]: Start difference. First operand 34024 states and 181250 transitions. Second operand 16 states. [2020-10-11 16:01:34,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:01:34,051 INFO L93 Difference]: Finished difference Result 119076 states and 543105 transitions. [2020-10-11 16:01:34,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 16:01:34,052 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-11 16:01:34,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:01:34,403 INFO L225 Difference]: With dead ends: 119076 [2020-10-11 16:01:34,403 INFO L226 Difference]: Without dead ends: 119036 [2020-10-11 16:01:34,403 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-11 16:01:35,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119036 states. [2020-10-11 16:01:36,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119036 to 33873. [2020-10-11 16:01:36,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33873 states. [2020-10-11 16:01:36,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33873 states to 33873 states and 180354 transitions. [2020-10-11 16:01:36,880 INFO L78 Accepts]: Start accepts. Automaton has 33873 states and 180354 transitions. Word has length 25 [2020-10-11 16:01:36,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:01:36,880 INFO L481 AbstractCegarLoop]: Abstraction has 33873 states and 180354 transitions. [2020-10-11 16:01:36,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-11 16:01:36,880 INFO L276 IsEmpty]: Start isEmpty. Operand 33873 states and 180354 transitions. [2020-10-11 16:01:36,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-11 16:01:36,883 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:01:36,883 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:01:37,083 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable108 [2020-10-11 16:01:37,083 INFO L429 AbstractCegarLoop]: === Iteration 35 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:01:37,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:01:37,084 INFO L82 PathProgramCache]: Analyzing trace with hash 507547272, now seen corresponding path program 4 times [2020-10-11 16:01:37,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:01:37,084 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101645639] [2020-10-11 16:01:37,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:01:37,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:01:37,160 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-11 16:01:37,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101645639] [2020-10-11 16:01:37,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056844001] [2020-10-11 16:01:37,160 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:01:37,259 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 16:01:37,259 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 16:01:37,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 16:01:37,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:01:37,364 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-11 16:01:37,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:01:37,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-11 16:01:37,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725598960] [2020-10-11 16:01:37,365 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-11 16:01:37,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:01:37,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-11 16:01:37,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-11 16:01:37,366 INFO L87 Difference]: Start difference. First operand 33873 states and 180354 transitions. Second operand 16 states. [2020-10-11 16:01:39,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:01:39,006 INFO L93 Difference]: Finished difference Result 118020 states and 538147 transitions. [2020-10-11 16:01:39,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 16:01:39,007 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-11 16:01:39,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:01:39,352 INFO L225 Difference]: With dead ends: 118020 [2020-10-11 16:01:39,352 INFO L226 Difference]: Without dead ends: 117980 [2020-10-11 16:01:39,352 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-11 16:01:40,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117980 states. [2020-10-11 16:01:42,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117980 to 33387. [2020-10-11 16:01:42,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33387 states. [2020-10-11 16:01:42,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33387 states to 33387 states and 177693 transitions. [2020-10-11 16:01:42,418 INFO L78 Accepts]: Start accepts. Automaton has 33387 states and 177693 transitions. Word has length 25 [2020-10-11 16:01:42,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:01:42,419 INFO L481 AbstractCegarLoop]: Abstraction has 33387 states and 177693 transitions. [2020-10-11 16:01:42,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-11 16:01:42,419 INFO L276 IsEmpty]: Start isEmpty. Operand 33387 states and 177693 transitions. [2020-10-11 16:01:42,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-11 16:01:42,421 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:01:42,421 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:01:42,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,53 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:01:42,622 INFO L429 AbstractCegarLoop]: === Iteration 36 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:01:42,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:01:42,622 INFO L82 PathProgramCache]: Analyzing trace with hash 1147615783, now seen corresponding path program 5 times [2020-10-11 16:01:42,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:01:42,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136080996] [2020-10-11 16:01:42,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:01:42,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:01:42,688 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-11 16:01:42,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136080996] [2020-10-11 16:01:42,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:01:42,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 16:01:42,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898045583] [2020-10-11 16:01:42,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-11 16:01:42,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:01:42,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-11 16:01:42,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-11 16:01:42,689 INFO L87 Difference]: Start difference. First operand 33387 states and 177693 transitions. Second operand 9 states. [2020-10-11 16:01:44,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:01:44,293 INFO L93 Difference]: Finished difference Result 118363 states and 539792 transitions. [2020-10-11 16:01:44,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 16:01:44,294 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-11 16:01:44,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:01:44,642 INFO L225 Difference]: With dead ends: 118363 [2020-10-11 16:01:44,642 INFO L226 Difference]: Without dead ends: 118333 [2020-10-11 16:01:44,643 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-11 16:01:45,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118333 states. [2020-10-11 16:01:47,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118333 to 32908. [2020-10-11 16:01:47,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32908 states. [2020-10-11 16:01:47,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32908 states to 32908 states and 175152 transitions. [2020-10-11 16:01:47,118 INFO L78 Accepts]: Start accepts. Automaton has 32908 states and 175152 transitions. Word has length 25 [2020-10-11 16:01:47,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:01:47,118 INFO L481 AbstractCegarLoop]: Abstraction has 32908 states and 175152 transitions. [2020-10-11 16:01:47,118 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-11 16:01:47,118 INFO L276 IsEmpty]: Start isEmpty. Operand 32908 states and 175152 transitions. [2020-10-11 16:01:47,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-11 16:01:47,121 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:01:47,121 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:01:47,121 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2020-10-11 16:01:47,121 INFO L429 AbstractCegarLoop]: === Iteration 37 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:01:47,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:01:47,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1147599384, now seen corresponding path program 5 times [2020-10-11 16:01:47,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:01:47,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532794376] [2020-10-11 16:01:47,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:01:47,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:01:47,192 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-11 16:01:47,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532794376] [2020-10-11 16:01:47,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:01:47,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 16:01:47,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27657812] [2020-10-11 16:01:47,194 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-11 16:01:47,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:01:47,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-11 16:01:47,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-11 16:01:47,194 INFO L87 Difference]: Start difference. First operand 32908 states and 175152 transitions. Second operand 9 states. [2020-10-11 16:01:48,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:01:48,730 INFO L93 Difference]: Finished difference Result 117027 states and 533313 transitions. [2020-10-11 16:01:48,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 16:01:48,731 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-11 16:01:48,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:01:49,068 INFO L225 Difference]: With dead ends: 117027 [2020-10-11 16:01:49,068 INFO L226 Difference]: Without dead ends: 116997 [2020-10-11 16:01:49,068 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-11 16:01:50,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116997 states. [2020-10-11 16:01:51,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116997 to 32394. [2020-10-11 16:01:51,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32394 states. [2020-10-11 16:01:52,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32394 states to 32394 states and 172458 transitions. [2020-10-11 16:01:52,039 INFO L78 Accepts]: Start accepts. Automaton has 32394 states and 172458 transitions. Word has length 25 [2020-10-11 16:01:52,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:01:52,039 INFO L481 AbstractCegarLoop]: Abstraction has 32394 states and 172458 transitions. [2020-10-11 16:01:52,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-11 16:01:52,040 INFO L276 IsEmpty]: Start isEmpty. Operand 32394 states and 172458 transitions. [2020-10-11 16:01:52,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-11 16:01:52,043 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:01:52,043 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:01:52,043 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2020-10-11 16:01:52,043 INFO L429 AbstractCegarLoop]: === Iteration 38 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:01:52,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:01:52,044 INFO L82 PathProgramCache]: Analyzing trace with hash 1136664103, now seen corresponding path program 6 times [2020-10-11 16:01:52,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:01:52,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917421734] [2020-10-11 16:01:52,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:01:52,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:01:52,114 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-11 16:01:52,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917421734] [2020-10-11 16:01:52,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:01:52,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 16:01:52,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753805722] [2020-10-11 16:01:52,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-11 16:01:52,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:01:52,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-11 16:01:52,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-11 16:01:52,116 INFO L87 Difference]: Start difference. First operand 32394 states and 172458 transitions. Second operand 9 states. [2020-10-11 16:01:53,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:01:53,560 INFO L93 Difference]: Finished difference Result 116213 states and 529114 transitions. [2020-10-11 16:01:53,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 16:01:53,561 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-11 16:01:53,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:01:53,909 INFO L225 Difference]: With dead ends: 116213 [2020-10-11 16:01:53,909 INFO L226 Difference]: Without dead ends: 116173 [2020-10-11 16:01:53,909 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-11 16:01:55,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116173 states. [2020-10-11 16:01:56,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116173 to 31530. [2020-10-11 16:01:56,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31530 states. [2020-10-11 16:01:56,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31530 states to 31530 states and 168028 transitions. [2020-10-11 16:01:56,325 INFO L78 Accepts]: Start accepts. Automaton has 31530 states and 168028 transitions. Word has length 25 [2020-10-11 16:01:56,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:01:56,325 INFO L481 AbstractCegarLoop]: Abstraction has 31530 states and 168028 transitions. [2020-10-11 16:01:56,325 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-11 16:01:56,325 INFO L276 IsEmpty]: Start isEmpty. Operand 31530 states and 168028 transitions. [2020-10-11 16:01:56,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-11 16:01:56,328 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:01:56,328 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:01:56,328 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2020-10-11 16:01:56,328 INFO L429 AbstractCegarLoop]: === Iteration 39 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:01:56,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:01:56,328 INFO L82 PathProgramCache]: Analyzing trace with hash 1136636296, now seen corresponding path program 5 times [2020-10-11 16:01:56,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:01:56,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618734018] [2020-10-11 16:01:56,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:01:56,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:01:56,401 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-11 16:01:56,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618734018] [2020-10-11 16:01:56,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:01:56,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 16:01:56,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523352930] [2020-10-11 16:01:56,403 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-11 16:01:56,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:01:56,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-11 16:01:56,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-11 16:01:56,403 INFO L87 Difference]: Start difference. First operand 31530 states and 168028 transitions. Second operand 9 states. [2020-10-11 16:01:57,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:01:57,996 INFO L93 Difference]: Finished difference Result 115048 states and 523573 transitions. [2020-10-11 16:01:57,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 16:01:57,997 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-11 16:01:57,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:01:58,338 INFO L225 Difference]: With dead ends: 115048 [2020-10-11 16:01:58,338 INFO L226 Difference]: Without dead ends: 115018 [2020-10-11 16:01:58,338 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-11 16:01:59,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115018 states. [2020-10-11 16:02:01,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115018 to 31199. [2020-10-11 16:02:01,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31199 states. [2020-10-11 16:02:01,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31199 states to 31199 states and 166334 transitions. [2020-10-11 16:02:01,334 INFO L78 Accepts]: Start accepts. Automaton has 31199 states and 166334 transitions. Word has length 25 [2020-10-11 16:02:01,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:02:01,334 INFO L481 AbstractCegarLoop]: Abstraction has 31199 states and 166334 transitions. [2020-10-11 16:02:01,334 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-11 16:02:01,334 INFO L276 IsEmpty]: Start isEmpty. Operand 31199 states and 166334 transitions. [2020-10-11 16:02:01,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-11 16:02:01,336 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:02:01,336 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:02:01,337 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2020-10-11 16:02:01,337 INFO L429 AbstractCegarLoop]: === Iteration 40 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:02:01,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:02:01,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1120904664, now seen corresponding path program 6 times [2020-10-11 16:02:01,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:02:01,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786515547] [2020-10-11 16:02:01,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:02:01,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:02:01,412 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-11 16:02:01,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786515547] [2020-10-11 16:02:01,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:02:01,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 16:02:01,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052998957] [2020-10-11 16:02:01,414 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-11 16:02:01,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:02:01,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-11 16:02:01,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-11 16:02:01,414 INFO L87 Difference]: Start difference. First operand 31199 states and 166334 transitions. Second operand 9 states. [2020-10-11 16:02:02,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:02:02,896 INFO L93 Difference]: Finished difference Result 114413 states and 520399 transitions. [2020-10-11 16:02:02,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 16:02:02,897 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-11 16:02:02,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:02:03,227 INFO L225 Difference]: With dead ends: 114413 [2020-10-11 16:02:03,227 INFO L226 Difference]: Without dead ends: 114373 [2020-10-11 16:02:03,227 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-11 16:02:04,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114373 states. [2020-10-11 16:02:05,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114373 to 30592. [2020-10-11 16:02:05,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30592 states. [2020-10-11 16:02:05,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30592 states to 30592 states and 163260 transitions. [2020-10-11 16:02:05,580 INFO L78 Accepts]: Start accepts. Automaton has 30592 states and 163260 transitions. Word has length 25 [2020-10-11 16:02:05,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:02:05,581 INFO L481 AbstractCegarLoop]: Abstraction has 30592 states and 163260 transitions. [2020-10-11 16:02:05,581 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-11 16:02:05,581 INFO L276 IsEmpty]: Start isEmpty. Operand 30592 states and 163260 transitions. [2020-10-11 16:02:05,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-11 16:02:05,583 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:02:05,583 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:02:05,583 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2020-10-11 16:02:05,583 INFO L429 AbstractCegarLoop]: === Iteration 41 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:02:05,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:02:05,583 INFO L82 PathProgramCache]: Analyzing trace with hash 1120893256, now seen corresponding path program 6 times [2020-10-11 16:02:05,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:02:05,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982140493] [2020-10-11 16:02:05,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:02:05,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:02:05,659 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-11 16:02:05,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982140493] [2020-10-11 16:02:05,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:02:05,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 16:02:05,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853771063] [2020-10-11 16:02:05,660 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-11 16:02:05,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:02:05,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-11 16:02:05,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-11 16:02:05,660 INFO L87 Difference]: Start difference. First operand 30592 states and 163260 transitions. Second operand 9 states. [2020-10-11 16:02:07,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:02:07,112 INFO L93 Difference]: Finished difference Result 113466 states and 515911 transitions. [2020-10-11 16:02:07,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 16:02:07,113 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-11 16:02:07,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:02:07,441 INFO L225 Difference]: With dead ends: 113466 [2020-10-11 16:02:07,441 INFO L226 Difference]: Without dead ends: 113426 [2020-10-11 16:02:07,442 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-11 16:02:08,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113426 states. [2020-10-11 16:02:10,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113426 to 29802. [2020-10-11 16:02:10,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29802 states. [2020-10-11 16:02:10,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29802 states to 29802 states and 159321 transitions. [2020-10-11 16:02:10,362 INFO L78 Accepts]: Start accepts. Automaton has 29802 states and 159321 transitions. Word has length 25 [2020-10-11 16:02:10,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:02:10,363 INFO L481 AbstractCegarLoop]: Abstraction has 29802 states and 159321 transitions. [2020-10-11 16:02:10,363 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-11 16:02:10,363 INFO L276 IsEmpty]: Start isEmpty. Operand 29802 states and 159321 transitions. [2020-10-11 16:02:10,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-11 16:02:10,365 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:02:10,365 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:02:10,365 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2020-10-11 16:02:10,365 INFO L429 AbstractCegarLoop]: === Iteration 42 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:02:10,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:02:10,365 INFO L82 PathProgramCache]: Analyzing trace with hash 123792641, now seen corresponding path program 1 times [2020-10-11 16:02:10,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:02:10,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480715562] [2020-10-11 16:02:10,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:02:10,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:02:10,404 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-11 16:02:10,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480715562] [2020-10-11 16:02:10,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:02:10,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 16:02:10,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668462869] [2020-10-11 16:02:10,405 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-11 16:02:10,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:02:10,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-11 16:02:10,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-11 16:02:10,405 INFO L87 Difference]: Start difference. First operand 29802 states and 159321 transitions. Second operand 5 states. [2020-10-11 16:02:10,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:02:10,825 INFO L93 Difference]: Finished difference Result 53165 states and 272731 transitions. [2020-10-11 16:02:10,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-11 16:02:10,825 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-10-11 16:02:10,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:02:10,991 INFO L225 Difference]: With dead ends: 53165 [2020-10-11 16:02:10,992 INFO L226 Difference]: Without dead ends: 53102 [2020-10-11 16:02:10,992 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-11 16:02:11,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53102 states. [2020-10-11 16:02:12,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53102 to 37675. [2020-10-11 16:02:12,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37675 states. [2020-10-11 16:02:12,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37675 states to 37675 states and 201015 transitions. [2020-10-11 16:02:12,518 INFO L78 Accepts]: Start accepts. Automaton has 37675 states and 201015 transitions. Word has length 25 [2020-10-11 16:02:12,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:02:12,518 INFO L481 AbstractCegarLoop]: Abstraction has 37675 states and 201015 transitions. [2020-10-11 16:02:12,518 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-11 16:02:12,518 INFO L276 IsEmpty]: Start isEmpty. Operand 37675 states and 201015 transitions. [2020-10-11 16:02:12,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-11 16:02:12,521 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:02:12,521 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:02:12,521 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2020-10-11 16:02:12,522 INFO L429 AbstractCegarLoop]: === Iteration 43 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:02:12,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:02:12,522 INFO L82 PathProgramCache]: Analyzing trace with hash -480284107, now seen corresponding path program 1 times [2020-10-11 16:02:12,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:02:12,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197573546] [2020-10-11 16:02:12,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:02:12,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:02:12,623 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:02:12,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197573546] [2020-10-11 16:02:12,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674947370] [2020-10-11 16:02:12,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:02:12,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:02:12,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 16:02:12,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:02:12,873 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:02:12,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:02:12,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-11 16:02:12,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110647344] [2020-10-11 16:02:12,874 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-11 16:02:12,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:02:12,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-11 16:02:12,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-11 16:02:12,874 INFO L87 Difference]: Start difference. First operand 37675 states and 201015 transitions. Second operand 20 states. [2020-10-11 16:02:16,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:02:16,487 INFO L93 Difference]: Finished difference Result 186148 states and 815009 transitions. [2020-10-11 16:02:16,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-11 16:02:16,487 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-11 16:02:16,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:02:17,005 INFO L225 Difference]: With dead ends: 186148 [2020-10-11 16:02:17,005 INFO L226 Difference]: Without dead ends: 186130 [2020-10-11 16:02:17,006 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1848 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-10-11 16:02:18,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186130 states. [2020-10-11 16:02:21,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186130 to 37780. [2020-10-11 16:02:21,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37780 states. [2020-10-11 16:02:21,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37780 states to 37780 states and 201508 transitions. [2020-10-11 16:02:21,526 INFO L78 Accepts]: Start accepts. Automaton has 37780 states and 201508 transitions. Word has length 27 [2020-10-11 16:02:21,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:02:21,527 INFO L481 AbstractCegarLoop]: Abstraction has 37780 states and 201508 transitions. [2020-10-11 16:02:21,527 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-11 16:02:21,527 INFO L276 IsEmpty]: Start isEmpty. Operand 37780 states and 201508 transitions. [2020-10-11 16:02:21,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-11 16:02:21,530 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:02:21,530 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:02:21,730 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable117 [2020-10-11 16:02:21,731 INFO L429 AbstractCegarLoop]: === Iteration 44 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:02:21,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:02:21,731 INFO L82 PathProgramCache]: Analyzing trace with hash -1807002315, now seen corresponding path program 2 times [2020-10-11 16:02:21,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:02:21,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110975540] [2020-10-11 16:02:21,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:02:21,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:02:21,826 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-11 16:02:21,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110975540] [2020-10-11 16:02:21,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072335485] [2020-10-11 16:02:21,826 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:02:21,912 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 16:02:21,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 16:02:21,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 16:02:21,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:02:22,087 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-11 16:02:22,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:02:22,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-11 16:02:22,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217494213] [2020-10-11 16:02:22,088 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-11 16:02:22,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:02:22,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-11 16:02:22,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-11 16:02:22,089 INFO L87 Difference]: Start difference. First operand 37780 states and 201508 transitions. Second operand 20 states. [2020-10-11 16:02:25,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:02:25,761 INFO L93 Difference]: Finished difference Result 185731 states and 813247 transitions. [2020-10-11 16:02:25,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-11 16:02:25,762 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-11 16:02:25,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:02:26,278 INFO L225 Difference]: With dead ends: 185731 [2020-10-11 16:02:26,279 INFO L226 Difference]: Without dead ends: 185707 [2020-10-11 16:02:26,279 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1840 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-10-11 16:02:27,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185707 states. [2020-10-11 16:02:29,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185707 to 37506. [2020-10-11 16:02:29,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37506 states. [2020-10-11 16:02:31,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37506 states to 37506 states and 200034 transitions. [2020-10-11 16:02:31,219 INFO L78 Accepts]: Start accepts. Automaton has 37506 states and 200034 transitions. Word has length 27 [2020-10-11 16:02:31,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:02:31,219 INFO L481 AbstractCegarLoop]: Abstraction has 37506 states and 200034 transitions. [2020-10-11 16:02:31,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-11 16:02:31,219 INFO L276 IsEmpty]: Start isEmpty. Operand 37506 states and 200034 transitions. [2020-10-11 16:02:31,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-11 16:02:31,223 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:02:31,223 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:02:31,423 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2020-10-11 16:02:31,423 INFO L429 AbstractCegarLoop]: === Iteration 45 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:02:31,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:02:31,424 INFO L82 PathProgramCache]: Analyzing trace with hash 2078895349, now seen corresponding path program 3 times [2020-10-11 16:02:31,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:02:31,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154905589] [2020-10-11 16:02:31,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:02:31,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:02:31,519 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-11 16:02:31,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154905589] [2020-10-11 16:02:31,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544218589] [2020-10-11 16:02:31,520 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:02:31,612 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-11 16:02:31,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 16:02:31,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 16:02:31,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:02:31,788 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-11 16:02:31,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:02:31,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-11 16:02:31,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426819231] [2020-10-11 16:02:31,790 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-11 16:02:31,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:02:31,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-11 16:02:31,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-11 16:02:31,790 INFO L87 Difference]: Start difference. First operand 37506 states and 200034 transitions. Second operand 20 states. [2020-10-11 16:02:35,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:02:35,377 INFO L93 Difference]: Finished difference Result 185071 states and 810108 transitions. [2020-10-11 16:02:35,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-11 16:02:35,377 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-11 16:02:35,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:02:35,893 INFO L225 Difference]: With dead ends: 185071 [2020-10-11 16:02:35,893 INFO L226 Difference]: Without dead ends: 185053 [2020-10-11 16:02:35,894 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1842 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-10-11 16:02:37,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185053 states. [2020-10-11 16:02:39,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185053 to 37607. [2020-10-11 16:02:39,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37607 states. [2020-10-11 16:02:39,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37607 states to 37607 states and 200519 transitions. [2020-10-11 16:02:39,565 INFO L78 Accepts]: Start accepts. Automaton has 37607 states and 200519 transitions. Word has length 27 [2020-10-11 16:02:39,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:02:39,565 INFO L481 AbstractCegarLoop]: Abstraction has 37607 states and 200519 transitions. [2020-10-11 16:02:39,565 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-11 16:02:39,565 INFO L276 IsEmpty]: Start isEmpty. Operand 37607 states and 200519 transitions. [2020-10-11 16:02:39,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-11 16:02:39,568 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:02:39,568 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:02:39,768 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:02:39,769 INFO L429 AbstractCegarLoop]: === Iteration 46 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:02:39,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:02:39,769 INFO L82 PathProgramCache]: Analyzing trace with hash -651887627, now seen corresponding path program 4 times [2020-10-11 16:02:39,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:02:39,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829280225] [2020-10-11 16:02:39,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:02:39,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:02:39,871 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-11 16:02:39,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829280225] [2020-10-11 16:02:39,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421790804] [2020-10-11 16:02:39,871 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:02:39,981 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 16:02:39,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 16:02:39,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 16:02:39,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:02:40,153 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-11 16:02:40,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:02:40,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-11 16:02:40,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437503117] [2020-10-11 16:02:40,154 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-11 16:02:40,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:02:40,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-11 16:02:40,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-11 16:02:40,154 INFO L87 Difference]: Start difference. First operand 37607 states and 200519 transitions. Second operand 20 states. [2020-10-11 16:02:44,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:02:44,218 INFO L93 Difference]: Finished difference Result 184772 states and 808751 transitions. [2020-10-11 16:02:44,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-11 16:02:44,218 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-11 16:02:44,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:02:44,738 INFO L225 Difference]: With dead ends: 184772 [2020-10-11 16:02:44,738 INFO L226 Difference]: Without dead ends: 184748 [2020-10-11 16:02:44,739 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1836 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-10-11 16:02:46,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184748 states. [2020-10-11 16:02:48,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184748 to 37341. [2020-10-11 16:02:48,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37341 states. [2020-10-11 16:02:48,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37341 states to 37341 states and 199065 transitions. [2020-10-11 16:02:48,373 INFO L78 Accepts]: Start accepts. Automaton has 37341 states and 199065 transitions. Word has length 27 [2020-10-11 16:02:48,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:02:48,373 INFO L481 AbstractCegarLoop]: Abstraction has 37341 states and 199065 transitions. [2020-10-11 16:02:48,373 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-11 16:02:48,373 INFO L276 IsEmpty]: Start isEmpty. Operand 37341 states and 199065 transitions. [2020-10-11 16:02:48,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-11 16:02:48,376 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:02:48,376 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:02:48,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,57 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:02:48,577 INFO L429 AbstractCegarLoop]: === Iteration 47 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:02:48,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:02:48,578 INFO L82 PathProgramCache]: Analyzing trace with hash -11846923, now seen corresponding path program 5 times [2020-10-11 16:02:48,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:02:48,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562518545] [2020-10-11 16:02:48,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:02:48,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:02:48,674 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-11 16:02:48,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562518545] [2020-10-11 16:02:48,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260693767] [2020-10-11 16:02:48,675 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:02:48,772 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-10-11 16:02:48,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 16:02:48,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 16:02:48,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:02:48,948 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-11 16:02:48,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:02:48,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-11 16:02:48,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015684814] [2020-10-11 16:02:48,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-11 16:02:48,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:02:48,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-11 16:02:48,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-11 16:02:48,950 INFO L87 Difference]: Start difference. First operand 37341 states and 199065 transitions. Second operand 20 states. [2020-10-11 16:02:52,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:02:52,560 INFO L93 Difference]: Finished difference Result 184120 states and 805632 transitions. [2020-10-11 16:02:52,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-11 16:02:52,561 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-11 16:02:52,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:02:53,950 INFO L225 Difference]: With dead ends: 184120 [2020-10-11 16:02:53,951 INFO L226 Difference]: Without dead ends: 184102 [2020-10-11 16:02:53,951 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1835 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-10-11 16:02:55,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184102 states. [2020-10-11 16:02:57,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184102 to 37438. [2020-10-11 16:02:57,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37438 states. [2020-10-11 16:02:57,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37438 states to 37438 states and 199538 transitions. [2020-10-11 16:02:57,276 INFO L78 Accepts]: Start accepts. Automaton has 37438 states and 199538 transitions. Word has length 27 [2020-10-11 16:02:57,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:02:57,276 INFO L481 AbstractCegarLoop]: Abstraction has 37438 states and 199538 transitions. [2020-10-11 16:02:57,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-11 16:02:57,277 INFO L276 IsEmpty]: Start isEmpty. Operand 37438 states and 199538 transitions. [2020-10-11 16:02:57,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-11 16:02:57,280 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:02:57,280 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:02:57,480 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:02:57,480 INFO L429 AbstractCegarLoop]: === Iteration 48 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:02:57,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:02:57,481 INFO L82 PathProgramCache]: Analyzing trace with hash -22798603, now seen corresponding path program 6 times [2020-10-11 16:02:57,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:02:57,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812424629] [2020-10-11 16:02:57,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:02:57,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:02:57,576 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-11 16:02:57,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812424629] [2020-10-11 16:02:57,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975205858] [2020-10-11 16:02:57,577 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:02:57,667 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-10-11 16:02:57,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 16:02:57,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 16:02:57,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:02:57,836 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-11 16:02:57,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:02:57,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-11 16:02:57,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925672678] [2020-10-11 16:02:57,837 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-11 16:02:57,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:02:57,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-11 16:02:57,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-11 16:02:57,837 INFO L87 Difference]: Start difference. First operand 37438 states and 199538 transitions. Second operand 20 states. [2020-10-11 16:03:01,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:03:01,486 INFO L93 Difference]: Finished difference Result 183711 states and 803890 transitions. [2020-10-11 16:03:01,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-11 16:03:01,488 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-11 16:03:01,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:03:02,001 INFO L225 Difference]: With dead ends: 183711 [2020-10-11 16:03:02,001 INFO L226 Difference]: Without dead ends: 183683 [2020-10-11 16:03:02,002 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1824 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-10-11 16:03:04,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183683 states. [2020-10-11 16:03:06,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183683 to 37176. [2020-10-11 16:03:06,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37176 states. [2020-10-11 16:03:06,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37176 states to 37176 states and 198103 transitions. [2020-10-11 16:03:06,216 INFO L78 Accepts]: Start accepts. Automaton has 37176 states and 198103 transitions. Word has length 27 [2020-10-11 16:03:06,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:03:06,216 INFO L481 AbstractCegarLoop]: Abstraction has 37176 states and 198103 transitions. [2020-10-11 16:03:06,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-11 16:03:06,216 INFO L276 IsEmpty]: Start isEmpty. Operand 37176 states and 198103 transitions. [2020-10-11 16:03:06,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-11 16:03:06,219 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:03:06,219 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:03:06,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2020-10-11 16:03:06,420 INFO L429 AbstractCegarLoop]: === Iteration 49 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:03:06,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:03:06,420 INFO L82 PathProgramCache]: Analyzing trace with hash -1035670065, now seen corresponding path program 1 times [2020-10-11 16:03:06,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:03:06,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250449293] [2020-10-11 16:03:06,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:03:06,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:03:06,467 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-11 16:03:06,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250449293] [2020-10-11 16:03:06,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670631174] [2020-10-11 16:03:06,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:03:06,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:03:06,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-11 16:03:06,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:03:06,621 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-11 16:03:06,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:03:06,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-11 16:03:06,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669409161] [2020-10-11 16:03:06,622 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-11 16:03:06,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:03:06,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-11 16:03:06,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-11 16:03:06,622 INFO L87 Difference]: Start difference. First operand 37176 states and 198103 transitions. Second operand 12 states. [2020-10-11 16:03:07,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:03:07,406 INFO L93 Difference]: Finished difference Result 82213 states and 399726 transitions. [2020-10-11 16:03:07,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 16:03:07,407 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2020-10-11 16:03:07,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:03:07,653 INFO L225 Difference]: With dead ends: 82213 [2020-10-11 16:03:07,654 INFO L226 Difference]: Without dead ends: 82165 [2020-10-11 16:03:07,654 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-11 16:03:08,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82165 states. [2020-10-11 16:03:09,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82165 to 38439. [2020-10-11 16:03:09,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38439 states. [2020-10-11 16:03:09,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38439 states to 38439 states and 204452 transitions. [2020-10-11 16:03:09,655 INFO L78 Accepts]: Start accepts. Automaton has 38439 states and 204452 transitions. Word has length 27 [2020-10-11 16:03:09,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:03:09,655 INFO L481 AbstractCegarLoop]: Abstraction has 38439 states and 204452 transitions. [2020-10-11 16:03:09,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-11 16:03:09,655 INFO L276 IsEmpty]: Start isEmpty. Operand 38439 states and 204452 transitions. [2020-10-11 16:03:09,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-11 16:03:09,659 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:03:09,659 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:03:09,859 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123 [2020-10-11 16:03:09,859 INFO L429 AbstractCegarLoop]: === Iteration 50 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:03:09,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:03:09,860 INFO L82 PathProgramCache]: Analyzing trace with hash -1753210507, now seen corresponding path program 7 times [2020-10-11 16:03:09,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:03:09,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824707277] [2020-10-11 16:03:09,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:03:09,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:03:09,953 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-11 16:03:09,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824707277] [2020-10-11 16:03:09,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765256795] [2020-10-11 16:03:09,953 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:03:10,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:03:10,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 16:03:10,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:03:10,205 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-11 16:03:10,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:03:10,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-11 16:03:10,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092905646] [2020-10-11 16:03:10,206 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-11 16:03:10,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:03:10,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-11 16:03:10,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-11 16:03:10,207 INFO L87 Difference]: Start difference. First operand 38439 states and 204452 transitions. Second operand 20 states. [2020-10-11 16:03:14,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:03:14,161 INFO L93 Difference]: Finished difference Result 183266 states and 800955 transitions. [2020-10-11 16:03:14,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-11 16:03:14,162 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-11 16:03:14,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:03:14,679 INFO L225 Difference]: With dead ends: 183266 [2020-10-11 16:03:14,679 INFO L226 Difference]: Without dead ends: 183248 [2020-10-11 16:03:14,680 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1844 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-10-11 16:03:16,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183248 states. [2020-10-11 16:03:18,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183248 to 38274. [2020-10-11 16:03:18,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38274 states. [2020-10-11 16:03:18,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38274 states to 38274 states and 203647 transitions. [2020-10-11 16:03:18,326 INFO L78 Accepts]: Start accepts. Automaton has 38274 states and 203647 transitions. Word has length 27 [2020-10-11 16:03:18,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:03:18,326 INFO L481 AbstractCegarLoop]: Abstraction has 38274 states and 203647 transitions. [2020-10-11 16:03:18,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-11 16:03:18,326 INFO L276 IsEmpty]: Start isEmpty. Operand 38274 states and 203647 transitions. [2020-10-11 16:03:18,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-11 16:03:18,329 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:03:18,330 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:03:18,530 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2020-10-11 16:03:18,530 INFO L429 AbstractCegarLoop]: === Iteration 51 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:03:18,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:03:18,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1215038581, now seen corresponding path program 8 times [2020-10-11 16:03:18,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:03:18,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121258831] [2020-10-11 16:03:18,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:03:18,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:03:18,624 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-11 16:03:18,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121258831] [2020-10-11 16:03:18,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080046534] [2020-10-11 16:03:18,625 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:03:18,720 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 16:03:18,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 16:03:18,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 16:03:18,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:03:18,894 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-11 16:03:18,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:03:18,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-11 16:03:18,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307331232] [2020-10-11 16:03:18,894 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-11 16:03:18,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:03:18,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-11 16:03:18,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-11 16:03:18,895 INFO L87 Difference]: Start difference. First operand 38274 states and 203647 transitions. Second operand 20 states. [2020-10-11 16:03:23,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:03:23,056 INFO L93 Difference]: Finished difference Result 182849 states and 799193 transitions. [2020-10-11 16:03:23,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-11 16:03:23,057 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-11 16:03:23,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:03:24,441 INFO L225 Difference]: With dead ends: 182849 [2020-10-11 16:03:24,441 INFO L226 Difference]: Without dead ends: 182825 [2020-10-11 16:03:24,442 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1836 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-10-11 16:03:26,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182825 states. [2020-10-11 16:03:27,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182825 to 37880. [2020-10-11 16:03:27,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37880 states. [2020-10-11 16:03:27,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37880 states to 37880 states and 201614 transitions. [2020-10-11 16:03:27,858 INFO L78 Accepts]: Start accepts. Automaton has 37880 states and 201614 transitions. Word has length 27 [2020-10-11 16:03:27,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:03:27,858 INFO L481 AbstractCegarLoop]: Abstraction has 37880 states and 201614 transitions. [2020-10-11 16:03:27,858 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-11 16:03:27,858 INFO L276 IsEmpty]: Start isEmpty. Operand 37880 states and 201614 transitions. [2020-10-11 16:03:27,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-11 16:03:27,862 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:03:27,862 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:03:28,062 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2020-10-11 16:03:28,063 INFO L429 AbstractCegarLoop]: === Iteration 52 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:03:28,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:03:28,063 INFO L82 PathProgramCache]: Analyzing trace with hash -1641326347, now seen corresponding path program 9 times [2020-10-11 16:03:28,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:03:28,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082465166] [2020-10-11 16:03:28,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:03:28,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:03:28,160 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-11 16:03:28,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082465166] [2020-10-11 16:03:28,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341581695] [2020-10-11 16:03:28,161 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:03:28,248 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-11 16:03:28,248 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 16:03:28,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 16:03:28,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:03:28,420 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-11 16:03:28,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:03:28,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-11 16:03:28,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757042013] [2020-10-11 16:03:28,421 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-11 16:03:28,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:03:28,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-11 16:03:28,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-11 16:03:28,422 INFO L87 Difference]: Start difference. First operand 37880 states and 201614 transitions. Second operand 20 states. [2020-10-11 16:03:32,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:03:32,294 INFO L93 Difference]: Finished difference Result 183813 states and 803277 transitions. [2020-10-11 16:03:32,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-11 16:03:32,295 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-11 16:03:32,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:03:32,804 INFO L225 Difference]: With dead ends: 183813 [2020-10-11 16:03:32,804 INFO L226 Difference]: Without dead ends: 183795 [2020-10-11 16:03:32,805 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1840 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-10-11 16:03:35,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183795 states. [2020-10-11 16:03:37,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183795 to 37981. [2020-10-11 16:03:37,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37981 states. [2020-10-11 16:03:37,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37981 states to 37981 states and 202099 transitions. [2020-10-11 16:03:37,156 INFO L78 Accepts]: Start accepts. Automaton has 37981 states and 202099 transitions. Word has length 27 [2020-10-11 16:03:37,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:03:37,157 INFO L481 AbstractCegarLoop]: Abstraction has 37981 states and 202099 transitions. [2020-10-11 16:03:37,157 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-11 16:03:37,157 INFO L276 IsEmpty]: Start isEmpty. Operand 37981 states and 202099 transitions. [2020-10-11 16:03:37,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-11 16:03:37,160 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:03:37,161 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:03:37,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable126 [2020-10-11 16:03:37,369 INFO L429 AbstractCegarLoop]: === Iteration 53 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:03:37,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:03:37,370 INFO L82 PathProgramCache]: Analyzing trace with hash -144395083, now seen corresponding path program 10 times [2020-10-11 16:03:37,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:03:37,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105006968] [2020-10-11 16:03:37,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:03:37,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:03:37,467 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-11 16:03:37,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105006968] [2020-10-11 16:03:37,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321121216] [2020-10-11 16:03:37,468 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:03:37,557 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 16:03:37,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 16:03:37,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 16:03:37,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:03:37,727 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-11 16:03:37,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:03:37,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-11 16:03:37,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010269867] [2020-10-11 16:03:37,729 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-11 16:03:37,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:03:37,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-11 16:03:37,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-11 16:03:37,730 INFO L87 Difference]: Start difference. First operand 37981 states and 202099 transitions. Second operand 20 states. [2020-10-11 16:03:41,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:03:41,890 INFO L93 Difference]: Finished difference Result 184566 states and 806586 transitions. [2020-10-11 16:03:41,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-11 16:03:41,890 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-11 16:03:41,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:03:42,406 INFO L225 Difference]: With dead ends: 184566 [2020-10-11 16:03:42,406 INFO L226 Difference]: Without dead ends: 184542 [2020-10-11 16:03:42,406 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1839 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-10-11 16:03:44,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184542 states. [2020-10-11 16:03:46,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184542 to 37715. [2020-10-11 16:03:46,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37715 states. [2020-10-11 16:03:46,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37715 states to 37715 states and 200645 transitions. [2020-10-11 16:03:46,900 INFO L78 Accepts]: Start accepts. Automaton has 37715 states and 200645 transitions. Word has length 27 [2020-10-11 16:03:46,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:03:46,900 INFO L481 AbstractCegarLoop]: Abstraction has 37715 states and 200645 transitions. [2020-10-11 16:03:46,900 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-11 16:03:46,900 INFO L276 IsEmpty]: Start isEmpty. Operand 37715 states and 200645 transitions. [2020-10-11 16:03:46,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-11 16:03:46,905 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:03:46,905 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:03:47,117 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:03:47,118 INFO L429 AbstractCegarLoop]: === Iteration 54 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:03:47,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:03:47,118 INFO L82 PathProgramCache]: Analyzing trace with hash 484693941, now seen corresponding path program 11 times [2020-10-11 16:03:47,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:03:47,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746124614] [2020-10-11 16:03:47,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:03:47,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:03:47,213 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-11 16:03:47,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746124614] [2020-10-11 16:03:47,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080223280] [2020-10-11 16:03:47,214 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:03:47,304 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-10-11 16:03:47,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 16:03:47,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 16:03:47,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:03:47,480 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-11 16:03:47,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:03:47,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-11 16:03:47,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301040431] [2020-10-11 16:03:47,481 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-11 16:03:47,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:03:47,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-11 16:03:47,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-11 16:03:47,482 INFO L87 Difference]: Start difference. First operand 37715 states and 200645 transitions. Second operand 20 states. [2020-10-11 16:03:51,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:03:51,302 INFO L93 Difference]: Finished difference Result 183914 states and 803467 transitions. [2020-10-11 16:03:51,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-11 16:03:51,303 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-11 16:03:51,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:03:51,826 INFO L225 Difference]: With dead ends: 183914 [2020-10-11 16:03:51,827 INFO L226 Difference]: Without dead ends: 183896 [2020-10-11 16:03:51,827 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1827 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-10-11 16:03:53,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183896 states. [2020-10-11 16:03:56,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183896 to 37812. [2020-10-11 16:03:56,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37812 states. [2020-10-11 16:03:56,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37812 states to 37812 states and 201118 transitions. [2020-10-11 16:03:56,365 INFO L78 Accepts]: Start accepts. Automaton has 37812 states and 201118 transitions. Word has length 27 [2020-10-11 16:03:56,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:03:56,366 INFO L481 AbstractCegarLoop]: Abstraction has 37812 states and 201118 transitions. [2020-10-11 16:03:56,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-11 16:03:56,366 INFO L276 IsEmpty]: Start isEmpty. Operand 37812 states and 201118 transitions. [2020-10-11 16:03:56,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-11 16:03:56,369 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:03:56,369 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:03:56,570 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable128 [2020-10-11 16:03:56,570 INFO L429 AbstractCegarLoop]: === Iteration 55 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:03:56,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:03:56,571 INFO L82 PathProgramCache]: Analyzing trace with hash 468950901, now seen corresponding path program 12 times [2020-10-11 16:03:56,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:03:56,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839413607] [2020-10-11 16:03:56,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:03:56,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:03:56,667 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-11 16:03:56,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839413607] [2020-10-11 16:03:56,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956733783] [2020-10-11 16:03:56,668 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:03:56,751 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-11 16:03:56,751 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 16:03:56,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 16:03:56,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:03:56,926 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-11 16:03:56,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:03:56,927 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-11 16:03:56,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777938815] [2020-10-11 16:03:56,927 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-11 16:03:56,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:03:56,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-11 16:03:56,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-11 16:03:56,928 INFO L87 Difference]: Start difference. First operand 37812 states and 201118 transitions. Second operand 20 states. [2020-10-11 16:04:01,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:04:01,236 INFO L93 Difference]: Finished difference Result 182421 states and 796955 transitions. [2020-10-11 16:04:01,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-11 16:04:01,236 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-11 16:04:01,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:04:01,749 INFO L225 Difference]: With dead ends: 182421 [2020-10-11 16:04:01,749 INFO L226 Difference]: Without dead ends: 182393 [2020-10-11 16:04:01,749 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1837 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-10-11 16:04:03,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182393 states. [2020-10-11 16:04:05,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182393 to 37550. [2020-10-11 16:04:05,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37550 states. [2020-10-11 16:04:06,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37550 states to 37550 states and 199683 transitions. [2020-10-11 16:04:06,687 INFO L78 Accepts]: Start accepts. Automaton has 37550 states and 199683 transitions. Word has length 27 [2020-10-11 16:04:06,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:04:06,687 INFO L481 AbstractCegarLoop]: Abstraction has 37550 states and 199683 transitions. [2020-10-11 16:04:06,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-11 16:04:06,687 INFO L276 IsEmpty]: Start isEmpty. Operand 37550 states and 199683 transitions. [2020-10-11 16:04:06,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-11 16:04:06,691 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:04:06,691 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:04:06,891 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable129 [2020-10-11 16:04:06,892 INFO L429 AbstractCegarLoop]: === Iteration 56 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:04:06,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:04:06,892 INFO L82 PathProgramCache]: Analyzing trace with hash -528149714, now seen corresponding path program 1 times [2020-10-11 16:04:06,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:04:06,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800471876] [2020-10-11 16:04:06,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:04:06,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:04:06,946 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-11 16:04:06,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800471876] [2020-10-11 16:04:06,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121831204] [2020-10-11 16:04:06,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:04:07,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:04:07,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-11 16:04:07,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:04:07,107 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-11 16:04:07,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:04:07,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-11 16:04:07,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355265147] [2020-10-11 16:04:07,108 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-11 16:04:07,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:04:07,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-11 16:04:07,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-11 16:04:07,109 INFO L87 Difference]: Start difference. First operand 37550 states and 199683 transitions. Second operand 12 states. [2020-10-11 16:04:07,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:04:07,998 INFO L93 Difference]: Finished difference Result 86095 states and 418282 transitions. [2020-10-11 16:04:07,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 16:04:07,999 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2020-10-11 16:04:07,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:04:08,260 INFO L225 Difference]: With dead ends: 86095 [2020-10-11 16:04:08,260 INFO L226 Difference]: Without dead ends: 86043 [2020-10-11 16:04:08,260 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-11 16:04:09,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86043 states. [2020-10-11 16:04:10,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86043 to 39046. [2020-10-11 16:04:10,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39046 states. [2020-10-11 16:04:10,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39046 states to 39046 states and 207545 transitions. [2020-10-11 16:04:10,296 INFO L78 Accepts]: Start accepts. Automaton has 39046 states and 207545 transitions. Word has length 27 [2020-10-11 16:04:10,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:04:10,296 INFO L481 AbstractCegarLoop]: Abstraction has 39046 states and 207545 transitions. [2020-10-11 16:04:10,296 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-11 16:04:10,296 INFO L276 IsEmpty]: Start isEmpty. Operand 39046 states and 207545 transitions. [2020-10-11 16:04:10,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-11 16:04:10,300 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:04:10,300 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:04:10,500 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,67 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:04:10,501 INFO L429 AbstractCegarLoop]: === Iteration 57 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:04:10,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:04:10,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1008837557, now seen corresponding path program 13 times [2020-10-11 16:04:10,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:04:10,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616051487] [2020-10-11 16:04:10,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:04:10,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:04:10,601 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-11 16:04:10,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616051487] [2020-10-11 16:04:10,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357966830] [2020-10-11 16:04:10,601 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:04:10,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:04:10,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 16:04:10,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:04:10,870 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-11 16:04:10,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:04:10,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-11 16:04:10,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234561172] [2020-10-11 16:04:10,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-11 16:04:10,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:04:10,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-11 16:04:10,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-11 16:04:10,872 INFO L87 Difference]: Start difference. First operand 39046 states and 207545 transitions. Second operand 20 states. [2020-10-11 16:04:14,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:04:14,551 INFO L93 Difference]: Finished difference Result 182203 states and 795088 transitions. [2020-10-11 16:04:14,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-11 16:04:14,552 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-11 16:04:14,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:04:15,058 INFO L225 Difference]: With dead ends: 182203 [2020-10-11 16:04:15,059 INFO L226 Difference]: Without dead ends: 182185 [2020-10-11 16:04:15,059 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1840 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-10-11 16:04:17,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182185 states. [2020-10-11 16:04:19,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182185 to 38881. [2020-10-11 16:04:19,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38881 states. [2020-10-11 16:04:19,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38881 states to 38881 states and 206740 transitions. [2020-10-11 16:04:19,398 INFO L78 Accepts]: Start accepts. Automaton has 38881 states and 206740 transitions. Word has length 27 [2020-10-11 16:04:19,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:04:19,399 INFO L481 AbstractCegarLoop]: Abstraction has 38881 states and 206740 transitions. [2020-10-11 16:04:19,399 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-11 16:04:19,399 INFO L276 IsEmpty]: Start isEmpty. Operand 38881 states and 206740 transitions. [2020-10-11 16:04:19,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-11 16:04:19,404 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:04:19,404 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:04:19,604 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:04:19,604 INFO L429 AbstractCegarLoop]: === Iteration 58 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:04:19,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:04:19,605 INFO L82 PathProgramCache]: Analyzing trace with hash -1789198475, now seen corresponding path program 14 times [2020-10-11 16:04:19,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:04:19,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295421520] [2020-10-11 16:04:19,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:04:19,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:04:19,703 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-11 16:04:19,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295421520] [2020-10-11 16:04:19,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604521606] [2020-10-11 16:04:19,704 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:04:19,806 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 16:04:19,807 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 16:04:19,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 16:04:19,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:04:19,986 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-11 16:04:19,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:04:19,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-11 16:04:19,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563072775] [2020-10-11 16:04:19,987 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-11 16:04:19,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:04:19,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-11 16:04:19,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-11 16:04:19,988 INFO L87 Difference]: Start difference. First operand 38881 states and 206740 transitions. Second operand 20 states. [2020-10-11 16:04:23,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:04:23,705 INFO L93 Difference]: Finished difference Result 182814 states and 797848 transitions. [2020-10-11 16:04:23,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-11 16:04:23,706 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-11 16:04:23,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:04:24,219 INFO L225 Difference]: With dead ends: 182814 [2020-10-11 16:04:24,219 INFO L226 Difference]: Without dead ends: 182790 [2020-10-11 16:04:24,220 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1840 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-10-11 16:04:25,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182790 states. [2020-10-11 16:04:28,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182790 to 38491. [2020-10-11 16:04:28,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38491 states. [2020-10-11 16:04:28,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38491 states to 38491 states and 204715 transitions. [2020-10-11 16:04:28,693 INFO L78 Accepts]: Start accepts. Automaton has 38491 states and 204715 transitions. Word has length 27 [2020-10-11 16:04:28,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:04:28,693 INFO L481 AbstractCegarLoop]: Abstraction has 38491 states and 204715 transitions. [2020-10-11 16:04:28,693 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-11 16:04:28,693 INFO L276 IsEmpty]: Start isEmpty. Operand 38491 states and 204715 transitions. [2020-10-11 16:04:28,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-11 16:04:28,698 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:04:28,698 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:04:28,899 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132,69 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:04:28,899 INFO L429 AbstractCegarLoop]: === Iteration 59 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:04:28,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:04:28,900 INFO L82 PathProgramCache]: Analyzing trace with hash 1120567157, now seen corresponding path program 15 times [2020-10-11 16:04:28,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:04:28,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370152839] [2020-10-11 16:04:28,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:04:28,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:04:28,997 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-11 16:04:28,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370152839] [2020-10-11 16:04:28,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492463417] [2020-10-11 16:04:28,997 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:04:29,086 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-11 16:04:29,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 16:04:29,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 16:04:29,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:04:29,268 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-11 16:04:29,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:04:29,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-11 16:04:29,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577494847] [2020-10-11 16:04:29,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-11 16:04:29,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:04:29,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-11 16:04:29,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-11 16:04:29,270 INFO L87 Difference]: Start difference. First operand 38491 states and 204715 transitions. Second operand 20 states. [2020-10-11 16:04:32,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:04:32,983 INFO L93 Difference]: Finished difference Result 181233 states and 790722 transitions. [2020-10-11 16:04:32,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-11 16:04:32,983 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-11 16:04:32,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:04:33,484 INFO L225 Difference]: With dead ends: 181233 [2020-10-11 16:04:33,485 INFO L226 Difference]: Without dead ends: 181215 [2020-10-11 16:04:33,485 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1837 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-10-11 16:04:35,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181215 states. [2020-10-11 16:04:37,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181215 to 38192. [2020-10-11 16:04:37,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38192 states. [2020-10-11 16:04:37,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38192 states to 38192 states and 203358 transitions. [2020-10-11 16:04:37,963 INFO L78 Accepts]: Start accepts. Automaton has 38192 states and 203358 transitions. Word has length 27 [2020-10-11 16:04:37,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:04:37,963 INFO L481 AbstractCegarLoop]: Abstraction has 38192 states and 203358 transitions. [2020-10-11 16:04:37,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-11 16:04:37,963 INFO L276 IsEmpty]: Start isEmpty. Operand 38192 states and 203358 transitions. [2020-10-11 16:04:37,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-11 16:04:37,967 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:04:37,967 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:04:38,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable133 [2020-10-11 16:04:38,168 INFO L429 AbstractCegarLoop]: === Iteration 60 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:04:38,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:04:38,168 INFO L82 PathProgramCache]: Analyzing trace with hash -1610215819, now seen corresponding path program 16 times [2020-10-11 16:04:38,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:04:38,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387614664] [2020-10-11 16:04:38,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:04:38,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:04:38,279 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-11 16:04:38,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387614664] [2020-10-11 16:04:38,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850760117] [2020-10-11 16:04:38,280 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:04:38,365 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 16:04:38,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 16:04:38,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 16:04:38,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:04:38,540 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-11 16:04:38,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:04:38,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-11 16:04:38,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561179318] [2020-10-11 16:04:38,541 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-11 16:04:38,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:04:38,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-11 16:04:38,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-11 16:04:38,542 INFO L87 Difference]: Start difference. First operand 38192 states and 203358 transitions. Second operand 20 states. [2020-10-11 16:04:42,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:04:42,635 INFO L93 Difference]: Finished difference Result 181989 states and 794023 transitions. [2020-10-11 16:04:42,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-11 16:04:42,636 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-11 16:04:42,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:04:43,149 INFO L225 Difference]: With dead ends: 181989 [2020-10-11 16:04:43,150 INFO L226 Difference]: Without dead ends: 181965 [2020-10-11 16:04:43,150 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1832 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-10-11 16:04:44,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181965 states. [2020-10-11 16:04:46,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181965 to 37802. [2020-10-11 16:04:46,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37802 states. [2020-10-11 16:04:47,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37802 states to 37802 states and 201333 transitions. [2020-10-11 16:04:47,951 INFO L78 Accepts]: Start accepts. Automaton has 37802 states and 201333 transitions. Word has length 27 [2020-10-11 16:04:47,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:04:47,952 INFO L481 AbstractCegarLoop]: Abstraction has 37802 states and 201333 transitions. [2020-10-11 16:04:47,952 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-11 16:04:47,952 INFO L276 IsEmpty]: Start isEmpty. Operand 37802 states and 201333 transitions. [2020-10-11 16:04:47,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-11 16:04:47,956 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:04:47,956 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:04:48,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2020-10-11 16:04:48,157 INFO L429 AbstractCegarLoop]: === Iteration 61 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:04:48,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:04:48,157 INFO L82 PathProgramCache]: Analyzing trace with hash -1846620555, now seen corresponding path program 17 times [2020-10-11 16:04:48,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:04:48,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551156436] [2020-10-11 16:04:48,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:04:48,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:04:48,256 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-11 16:04:48,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551156436] [2020-10-11 16:04:48,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292876798] [2020-10-11 16:04:48,256 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:04:48,344 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-10-11 16:04:48,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 16:04:48,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 16:04:48,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:04:48,531 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-11 16:04:48,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:04:48,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-11 16:04:48,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556162918] [2020-10-11 16:04:48,532 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-11 16:04:48,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:04:48,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-11 16:04:48,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-11 16:04:48,533 INFO L87 Difference]: Start difference. First operand 37802 states and 201333 transitions. Second operand 20 states. [2020-10-11 16:04:52,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:04:52,381 INFO L93 Difference]: Finished difference Result 183299 states and 799959 transitions. [2020-10-11 16:04:52,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-11 16:04:52,382 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-11 16:04:52,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:04:52,895 INFO L225 Difference]: With dead ends: 183299 [2020-10-11 16:04:52,895 INFO L226 Difference]: Without dead ends: 183281 [2020-10-11 16:04:52,896 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1836 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-10-11 16:04:54,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183281 states. [2020-10-11 16:04:56,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183281 to 37899. [2020-10-11 16:04:56,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37899 states. [2020-10-11 16:04:56,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37899 states to 37899 states and 201806 transitions. [2020-10-11 16:04:56,569 INFO L78 Accepts]: Start accepts. Automaton has 37899 states and 201806 transitions. Word has length 27 [2020-10-11 16:04:56,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:04:56,569 INFO L481 AbstractCegarLoop]: Abstraction has 37899 states and 201806 transitions. [2020-10-11 16:04:56,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-11 16:04:56,570 INFO L276 IsEmpty]: Start isEmpty. Operand 37899 states and 201806 transitions. [2020-10-11 16:04:56,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-11 16:04:56,574 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:04:56,574 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:04:56,774 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2020-10-11 16:04:56,774 INFO L429 AbstractCegarLoop]: === Iteration 62 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:04:56,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:04:56,775 INFO L82 PathProgramCache]: Analyzing trace with hash -1873315275, now seen corresponding path program 18 times [2020-10-11 16:04:56,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:04:56,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636198880] [2020-10-11 16:04:56,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:04:56,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:04:56,879 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-11 16:04:56,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636198880] [2020-10-11 16:04:56,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574602481] [2020-10-11 16:04:56,880 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:04:56,970 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-11 16:04:56,970 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 16:04:56,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 16:04:56,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:04:57,153 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-11 16:04:57,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:04:57,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-11 16:04:57,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932468759] [2020-10-11 16:04:57,154 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-11 16:04:57,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:04:57,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-11 16:04:57,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-11 16:04:57,155 INFO L87 Difference]: Start difference. First operand 37899 states and 201806 transitions. Second operand 20 states. [2020-10-11 16:04:58,816 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-10-11 16:05:01,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:05:01,384 INFO L93 Difference]: Finished difference Result 182890 states and 798217 transitions. [2020-10-11 16:05:01,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-11 16:05:01,385 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-11 16:05:01,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:05:01,901 INFO L225 Difference]: With dead ends: 182890 [2020-10-11 16:05:01,902 INFO L226 Difference]: Without dead ends: 182862 [2020-10-11 16:05:01,902 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1827 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-10-11 16:05:03,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182862 states. [2020-10-11 16:05:05,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182862 to 37637. [2020-10-11 16:05:05,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37637 states. [2020-10-11 16:05:05,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37637 states to 37637 states and 200371 transitions. [2020-10-11 16:05:05,561 INFO L78 Accepts]: Start accepts. Automaton has 37637 states and 200371 transitions. Word has length 27 [2020-10-11 16:05:05,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:05:05,561 INFO L481 AbstractCegarLoop]: Abstraction has 37637 states and 200371 transitions. [2020-10-11 16:05:05,561 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-11 16:05:05,561 INFO L276 IsEmpty]: Start isEmpty. Operand 37637 states and 200371 transitions. [2020-10-11 16:05:05,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-11 16:05:05,565 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:05:05,565 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:05:05,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2020-10-11 16:05:05,766 INFO L429 AbstractCegarLoop]: === Iteration 63 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:05:05,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:05:05,767 INFO L82 PathProgramCache]: Analyzing trace with hash 1424539998, now seen corresponding path program 1 times [2020-10-11 16:05:05,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:05:05,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493732218] [2020-10-11 16:05:05,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:05:05,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:05:05,820 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-11 16:05:05,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493732218] [2020-10-11 16:05:05,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134958093] [2020-10-11 16:05:05,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:05:05,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:05:05,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-11 16:05:05,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:05:05,980 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-11 16:05:05,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:05:05,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-11 16:05:05,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254421267] [2020-10-11 16:05:05,982 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-11 16:05:05,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:05:05,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-11 16:05:05,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-11 16:05:05,982 INFO L87 Difference]: Start difference. First operand 37637 states and 200371 transitions. Second operand 12 states. [2020-10-11 16:05:06,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:05:06,980 INFO L93 Difference]: Finished difference Result 88848 states and 432494 transitions. [2020-10-11 16:05:06,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 16:05:06,981 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2020-10-11 16:05:06,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:05:07,255 INFO L225 Difference]: With dead ends: 88848 [2020-10-11 16:05:07,255 INFO L226 Difference]: Without dead ends: 88788 [2020-10-11 16:05:07,255 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-11 16:05:08,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88788 states. [2020-10-11 16:05:09,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88788 to 39292. [2020-10-11 16:05:09,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39292 states. [2020-10-11 16:05:09,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39292 states to 39292 states and 209387 transitions. [2020-10-11 16:05:09,830 INFO L78 Accepts]: Start accepts. Automaton has 39292 states and 209387 transitions. Word has length 27 [2020-10-11 16:05:09,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:05:09,830 INFO L481 AbstractCegarLoop]: Abstraction has 39292 states and 209387 transitions. [2020-10-11 16:05:09,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-11 16:05:09,830 INFO L276 IsEmpty]: Start isEmpty. Operand 39292 states and 209387 transitions. [2020-10-11 16:05:09,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-11 16:05:09,835 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:05:09,835 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:05:10,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:05:10,036 INFO L429 AbstractCegarLoop]: === Iteration 64 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:05:10,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:05:10,036 INFO L82 PathProgramCache]: Analyzing trace with hash -839318940, now seen corresponding path program 1 times [2020-10-11 16:05:10,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:05:10,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630154818] [2020-10-11 16:05:10,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:05:10,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:05:10,089 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-11 16:05:10,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630154818] [2020-10-11 16:05:10,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402459874] [2020-10-11 16:05:10,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:05:10,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:05:10,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-11 16:05:10,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:05:10,259 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-11 16:05:10,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:05:10,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-11 16:05:10,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390367646] [2020-10-11 16:05:10,260 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-11 16:05:10,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:05:10,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-11 16:05:10,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-11 16:05:10,260 INFO L87 Difference]: Start difference. First operand 39292 states and 209387 transitions. Second operand 12 states. [2020-10-11 16:05:11,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:05:11,265 INFO L93 Difference]: Finished difference Result 92913 states and 454143 transitions. [2020-10-11 16:05:11,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 16:05:11,266 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2020-10-11 16:05:11,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:05:11,554 INFO L225 Difference]: With dead ends: 92913 [2020-10-11 16:05:11,554 INFO L226 Difference]: Without dead ends: 92836 [2020-10-11 16:05:11,554 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-11 16:05:12,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92836 states. [2020-10-11 16:05:13,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92836 to 40834. [2020-10-11 16:05:13,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40834 states. [2020-10-11 16:05:13,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40834 states to 40834 states and 218021 transitions. [2020-10-11 16:05:13,778 INFO L78 Accepts]: Start accepts. Automaton has 40834 states and 218021 transitions. Word has length 27 [2020-10-11 16:05:13,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:05:13,778 INFO L481 AbstractCegarLoop]: Abstraction has 40834 states and 218021 transitions. [2020-10-11 16:05:13,779 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-11 16:05:13,779 INFO L276 IsEmpty]: Start isEmpty. Operand 40834 states and 218021 transitions. [2020-10-11 16:05:13,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-11 16:05:13,784 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:05:13,784 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:05:13,991 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable138 [2020-10-11 16:05:13,992 INFO L429 AbstractCegarLoop]: === Iteration 65 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:05:13,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:05:13,992 INFO L82 PathProgramCache]: Analyzing trace with hash -947827339, now seen corresponding path program 19 times [2020-10-11 16:05:13,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:05:13,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182965076] [2020-10-11 16:05:13,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:05:13,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:05:14,106 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-11 16:05:14,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182965076] [2020-10-11 16:05:14,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:05:14,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-11 16:05:14,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803348688] [2020-10-11 16:05:14,108 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-11 16:05:14,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:05:14,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-11 16:05:14,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-11 16:05:14,109 INFO L87 Difference]: Start difference. First operand 40834 states and 218021 transitions. Second operand 11 states. [2020-10-11 16:05:18,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:05:18,287 INFO L93 Difference]: Finished difference Result 180696 states and 786321 transitions. [2020-10-11 16:05:18,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-11 16:05:18,288 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-10-11 16:05:18,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:05:18,808 INFO L225 Difference]: With dead ends: 180696 [2020-10-11 16:05:18,808 INFO L226 Difference]: Without dead ends: 180678 [2020-10-11 16:05:18,808 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1552 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-10-11 16:05:20,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180678 states. [2020-10-11 16:05:22,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180678 to 40673. [2020-10-11 16:05:22,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40673 states. [2020-10-11 16:05:22,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40673 states to 40673 states and 217228 transitions. [2020-10-11 16:05:22,447 INFO L78 Accepts]: Start accepts. Automaton has 40673 states and 217228 transitions. Word has length 27 [2020-10-11 16:05:22,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:05:22,447 INFO L481 AbstractCegarLoop]: Abstraction has 40673 states and 217228 transitions. [2020-10-11 16:05:22,447 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-11 16:05:22,447 INFO L276 IsEmpty]: Start isEmpty. Operand 40673 states and 217228 transitions. [2020-10-11 16:05:22,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-11 16:05:22,452 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:05:22,452 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:05:22,452 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2020-10-11 16:05:22,452 INFO L429 AbstractCegarLoop]: === Iteration 66 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:05:22,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:05:22,452 INFO L82 PathProgramCache]: Analyzing trace with hash -963570379, now seen corresponding path program 20 times [2020-10-11 16:05:22,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:05:22,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391189850] [2020-10-11 16:05:22,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:05:22,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:05:22,555 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-11 16:05:22,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391189850] [2020-10-11 16:05:22,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:05:22,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-11 16:05:22,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046067490] [2020-10-11 16:05:22,556 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-11 16:05:22,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:05:22,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-11 16:05:22,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-11 16:05:22,557 INFO L87 Difference]: Start difference. First operand 40673 states and 217228 transitions. Second operand 11 states. [2020-10-11 16:05:26,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:05:26,359 INFO L93 Difference]: Finished difference Result 180287 states and 784579 transitions. [2020-10-11 16:05:26,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-11 16:05:26,360 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-10-11 16:05:26,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:05:26,863 INFO L225 Difference]: With dead ends: 180287 [2020-10-11 16:05:26,863 INFO L226 Difference]: Without dead ends: 180263 [2020-10-11 16:05:26,864 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1559 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-10-11 16:05:29,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180263 states. [2020-10-11 16:05:31,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180263 to 40321. [2020-10-11 16:05:31,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40321 states. [2020-10-11 16:05:31,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40321 states to 40321 states and 215433 transitions. [2020-10-11 16:05:31,170 INFO L78 Accepts]: Start accepts. Automaton has 40321 states and 215433 transitions. Word has length 27 [2020-10-11 16:05:31,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:05:31,170 INFO L481 AbstractCegarLoop]: Abstraction has 40321 states and 215433 transitions. [2020-10-11 16:05:31,170 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-11 16:05:31,170 INFO L276 IsEmpty]: Start isEmpty. Operand 40321 states and 215433 transitions. [2020-10-11 16:05:31,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-11 16:05:31,175 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:05:31,175 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:05:31,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2020-10-11 16:05:31,175 INFO L429 AbstractCegarLoop]: === Iteration 67 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:05:31,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:05:31,176 INFO L82 PathProgramCache]: Analyzing trace with hash 1412510069, now seen corresponding path program 21 times [2020-10-11 16:05:31,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:05:31,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397761866] [2020-10-11 16:05:31,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:05:31,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:05:31,279 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-11 16:05:31,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397761866] [2020-10-11 16:05:31,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:05:31,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-11 16:05:31,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990169309] [2020-10-11 16:05:31,280 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-11 16:05:31,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:05:31,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-11 16:05:31,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-11 16:05:31,280 INFO L87 Difference]: Start difference. First operand 40321 states and 215433 transitions. Second operand 11 states. [2020-10-11 16:05:34,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:05:34,969 INFO L93 Difference]: Finished difference Result 179815 states and 782456 transitions. [2020-10-11 16:05:34,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-11 16:05:34,970 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-10-11 16:05:34,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:05:35,474 INFO L225 Difference]: With dead ends: 179815 [2020-10-11 16:05:35,475 INFO L226 Difference]: Without dead ends: 179797 [2020-10-11 16:05:35,475 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1545 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-10-11 16:05:37,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179797 states. [2020-10-11 16:05:39,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179797 to 40030. [2020-10-11 16:05:39,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40030 states. [2020-10-11 16:05:39,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40030 states to 40030 states and 214096 transitions. [2020-10-11 16:05:39,853 INFO L78 Accepts]: Start accepts. Automaton has 40030 states and 214096 transitions. Word has length 27 [2020-10-11 16:05:39,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:05:39,853 INFO L481 AbstractCegarLoop]: Abstraction has 40030 states and 214096 transitions. [2020-10-11 16:05:39,853 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-11 16:05:39,853 INFO L276 IsEmpty]: Start isEmpty. Operand 40030 states and 214096 transitions. [2020-10-11 16:05:39,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-11 16:05:39,858 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:05:39,858 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:05:39,858 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2020-10-11 16:05:39,858 INFO L429 AbstractCegarLoop]: === Iteration 68 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:05:39,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:05:39,859 INFO L82 PathProgramCache]: Analyzing trace with hash 1385815349, now seen corresponding path program 22 times [2020-10-11 16:05:39,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:05:39,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531866113] [2020-10-11 16:05:39,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:05:39,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:05:39,960 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-11 16:05:39,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531866113] [2020-10-11 16:05:39,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:05:39,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-11 16:05:39,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351669082] [2020-10-11 16:05:39,961 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-11 16:05:39,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:05:39,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-11 16:05:39,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-11 16:05:39,962 INFO L87 Difference]: Start difference. First operand 40030 states and 214096 transitions. Second operand 11 states. [2020-10-11 16:05:43,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:05:43,709 INFO L93 Difference]: Finished difference Result 179585 states and 781438 transitions. [2020-10-11 16:05:43,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-11 16:05:43,710 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-10-11 16:05:43,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:05:44,216 INFO L225 Difference]: With dead ends: 179585 [2020-10-11 16:05:44,216 INFO L226 Difference]: Without dead ends: 179561 [2020-10-11 16:05:44,216 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1535 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-10-11 16:05:45,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179561 states. [2020-10-11 16:05:48,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179561 to 39678. [2020-10-11 16:05:48,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39678 states. [2020-10-11 16:05:48,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39678 states to 39678 states and 212301 transitions. [2020-10-11 16:05:48,706 INFO L78 Accepts]: Start accepts. Automaton has 39678 states and 212301 transitions. Word has length 27 [2020-10-11 16:05:48,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:05:48,706 INFO L481 AbstractCegarLoop]: Abstraction has 39678 states and 212301 transitions. [2020-10-11 16:05:48,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-11 16:05:48,706 INFO L276 IsEmpty]: Start isEmpty. Operand 39678 states and 212301 transitions. [2020-10-11 16:05:48,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-11 16:05:48,711 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:05:48,711 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:05:48,711 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2020-10-11 16:05:48,711 INFO L429 AbstractCegarLoop]: === Iteration 69 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:05:48,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:05:48,711 INFO L82 PathProgramCache]: Analyzing trace with hash -847392523, now seen corresponding path program 23 times [2020-10-11 16:05:48,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:05:48,712 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350398952] [2020-10-11 16:05:48,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:05:48,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:05:48,817 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-11 16:05:48,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350398952] [2020-10-11 16:05:48,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:05:48,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-11 16:05:48,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814420805] [2020-10-11 16:05:48,818 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-11 16:05:48,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:05:48,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-11 16:05:48,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-11 16:05:48,818 INFO L87 Difference]: Start difference. First operand 39678 states and 212301 transitions. Second operand 11 states. [2020-10-11 16:05:52,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:05:52,626 INFO L93 Difference]: Finished difference Result 179113 states and 779315 transitions. [2020-10-11 16:05:52,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-11 16:05:52,627 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-10-11 16:05:52,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:05:53,124 INFO L225 Difference]: With dead ends: 179113 [2020-10-11 16:05:53,124 INFO L226 Difference]: Without dead ends: 179095 [2020-10-11 16:05:53,125 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1556 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-10-11 16:05:54,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179095 states. [2020-10-11 16:05:57,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179095 to 39387. [2020-10-11 16:05:57,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39387 states. [2020-10-11 16:05:57,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39387 states to 39387 states and 210964 transitions. [2020-10-11 16:05:57,907 INFO L78 Accepts]: Start accepts. Automaton has 39387 states and 210964 transitions. Word has length 27 [2020-10-11 16:05:57,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:05:57,908 INFO L481 AbstractCegarLoop]: Abstraction has 39387 states and 210964 transitions. [2020-10-11 16:05:57,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-11 16:05:57,908 INFO L276 IsEmpty]: Start isEmpty. Operand 39387 states and 210964 transitions. [2020-10-11 16:05:57,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-11 16:05:57,913 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:05:57,913 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:05:57,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2020-10-11 16:05:57,913 INFO L429 AbstractCegarLoop]: === Iteration 70 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:05:57,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:05:57,913 INFO L82 PathProgramCache]: Analyzing trace with hash -858344203, now seen corresponding path program 24 times [2020-10-11 16:05:57,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:05:57,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690964254] [2020-10-11 16:05:57,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:05:57,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:05:58,019 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-11 16:05:58,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690964254] [2020-10-11 16:05:58,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:05:58,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-11 16:05:58,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003356726] [2020-10-11 16:05:58,020 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-11 16:05:58,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:05:58,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-11 16:05:58,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-11 16:05:58,021 INFO L87 Difference]: Start difference. First operand 39387 states and 210964 transitions. Second operand 11 states. [2020-10-11 16:06:01,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:06:01,867 INFO L93 Difference]: Finished difference Result 178704 states and 777573 transitions. [2020-10-11 16:06:01,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-11 16:06:01,868 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-10-11 16:06:01,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:06:02,363 INFO L225 Difference]: With dead ends: 178704 [2020-10-11 16:06:02,364 INFO L226 Difference]: Without dead ends: 178675 [2020-10-11 16:06:02,364 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1543 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-10-11 16:06:03,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178675 states. [2020-10-11 16:06:05,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178675 to 38805. [2020-10-11 16:06:05,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38805 states. [2020-10-11 16:06:06,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38805 states to 38805 states and 208284 transitions. [2020-10-11 16:06:06,044 INFO L78 Accepts]: Start accepts. Automaton has 38805 states and 208284 transitions. Word has length 27 [2020-10-11 16:06:06,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:06:06,045 INFO L481 AbstractCegarLoop]: Abstraction has 38805 states and 208284 transitions. [2020-10-11 16:06:06,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-11 16:06:06,045 INFO L276 IsEmpty]: Start isEmpty. Operand 38805 states and 208284 transitions. [2020-10-11 16:06:06,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-11 16:06:06,050 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:06:06,050 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:06:06,050 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2020-10-11 16:06:06,050 INFO L429 AbstractCegarLoop]: === Iteration 71 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:06:06,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:06:06,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1294328210, now seen corresponding path program 2 times [2020-10-11 16:06:06,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:06:06,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252792078] [2020-10-11 16:06:06,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:06:06,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:06:06,113 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-11 16:06:06,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252792078] [2020-10-11 16:06:06,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:06:06,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-11 16:06:06,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915529740] [2020-10-11 16:06:06,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 16:06:06,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:06:06,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 16:06:06,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-11 16:06:06,115 INFO L87 Difference]: Start difference. First operand 38805 states and 208284 transitions. Second operand 7 states. [2020-10-11 16:06:07,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:06:07,063 INFO L93 Difference]: Finished difference Result 90966 states and 445145 transitions. [2020-10-11 16:06:07,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 16:06:07,064 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-10-11 16:06:07,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:06:07,961 INFO L225 Difference]: With dead ends: 90966 [2020-10-11 16:06:07,961 INFO L226 Difference]: Without dead ends: 90889 [2020-10-11 16:06:07,962 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-11 16:06:08,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90889 states. [2020-10-11 16:06:09,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90889 to 40453. [2020-10-11 16:06:09,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40453 states. [2020-10-11 16:06:10,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40453 states to 40453 states and 217061 transitions. [2020-10-11 16:06:10,077 INFO L78 Accepts]: Start accepts. Automaton has 40453 states and 217061 transitions. Word has length 27 [2020-10-11 16:06:10,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:06:10,077 INFO L481 AbstractCegarLoop]: Abstraction has 40453 states and 217061 transitions. [2020-10-11 16:06:10,077 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 16:06:10,077 INFO L276 IsEmpty]: Start isEmpty. Operand 40453 states and 217061 transitions. [2020-10-11 16:06:10,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-11 16:06:10,082 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:06:10,082 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:06:10,082 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2020-10-11 16:06:10,082 INFO L429 AbstractCegarLoop]: === Iteration 72 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:06:10,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:06:10,082 INFO L82 PathProgramCache]: Analyzing trace with hash -1294339618, now seen corresponding path program 2 times [2020-10-11 16:06:10,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:06:10,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358722847] [2020-10-11 16:06:10,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:06:10,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:06:10,136 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-11 16:06:10,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358722847] [2020-10-11 16:06:10,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:06:10,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-11 16:06:10,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056000930] [2020-10-11 16:06:10,137 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 16:06:10,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:06:10,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 16:06:10,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-11 16:06:10,137 INFO L87 Difference]: Start difference. First operand 40453 states and 217061 transitions. Second operand 7 states. [2020-10-11 16:06:11,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:06:11,024 INFO L93 Difference]: Finished difference Result 91560 states and 447373 transitions. [2020-10-11 16:06:11,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 16:06:11,025 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-10-11 16:06:11,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:06:11,308 INFO L225 Difference]: With dead ends: 91560 [2020-10-11 16:06:11,309 INFO L226 Difference]: Without dead ends: 91483 [2020-10-11 16:06:11,309 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-11 16:06:12,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91483 states. [2020-10-11 16:06:13,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91483 to 41467. [2020-10-11 16:06:13,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41467 states. [2020-10-11 16:06:13,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41467 states to 41467 states and 222391 transitions. [2020-10-11 16:06:13,522 INFO L78 Accepts]: Start accepts. Automaton has 41467 states and 222391 transitions. Word has length 27 [2020-10-11 16:06:13,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:06:13,522 INFO L481 AbstractCegarLoop]: Abstraction has 41467 states and 222391 transitions. [2020-10-11 16:06:13,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 16:06:13,522 INFO L276 IsEmpty]: Start isEmpty. Operand 41467 states and 222391 transitions. [2020-10-11 16:06:13,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-11 16:06:13,527 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:06:13,527 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:06:13,528 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2020-10-11 16:06:13,528 INFO L429 AbstractCegarLoop]: === Iteration 73 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:06:13,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:06:13,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1294356017, now seen corresponding path program 2 times [2020-10-11 16:06:13,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:06:13,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126567503] [2020-10-11 16:06:13,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:06:13,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:06:13,579 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-11 16:06:13,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126567503] [2020-10-11 16:06:13,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:06:13,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-11 16:06:13,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901286450] [2020-10-11 16:06:13,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 16:06:13,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:06:13,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 16:06:13,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-11 16:06:13,581 INFO L87 Difference]: Start difference. First operand 41467 states and 222391 transitions. Second operand 7 states. [2020-10-11 16:06:14,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:06:14,508 INFO L93 Difference]: Finished difference Result 92674 states and 452263 transitions. [2020-10-11 16:06:14,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 16:06:14,509 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-10-11 16:06:14,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:06:14,788 INFO L225 Difference]: With dead ends: 92674 [2020-10-11 16:06:14,789 INFO L226 Difference]: Without dead ends: 92597 [2020-10-11 16:06:14,789 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-11 16:06:16,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92597 states. [2020-10-11 16:06:17,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92597 to 42564. [2020-10-11 16:06:17,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42564 states. [2020-10-11 16:06:17,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42564 states to 42564 states and 227862 transitions. [2020-10-11 16:06:17,527 INFO L78 Accepts]: Start accepts. Automaton has 42564 states and 227862 transitions. Word has length 27 [2020-10-11 16:06:17,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:06:17,528 INFO L481 AbstractCegarLoop]: Abstraction has 42564 states and 227862 transitions. [2020-10-11 16:06:17,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 16:06:17,528 INFO L276 IsEmpty]: Start isEmpty. Operand 42564 states and 227862 transitions. [2020-10-11 16:06:17,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-11 16:06:17,533 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:06:17,533 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:06:17,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2020-10-11 16:06:17,533 INFO L429 AbstractCegarLoop]: === Iteration 74 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:06:17,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:06:17,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1294335650, now seen corresponding path program 2 times [2020-10-11 16:06:17,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:06:17,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580563223] [2020-10-11 16:06:17,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:06:17,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:06:17,586 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-11 16:06:17,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580563223] [2020-10-11 16:06:17,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:06:17,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-11 16:06:17,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334015281] [2020-10-11 16:06:17,587 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 16:06:17,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:06:17,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 16:06:17,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-11 16:06:17,587 INFO L87 Difference]: Start difference. First operand 42564 states and 227862 transitions. Second operand 7 states. [2020-10-11 16:06:18,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:06:18,516 INFO L93 Difference]: Finished difference Result 93922 states and 458312 transitions. [2020-10-11 16:06:18,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 16:06:18,517 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-10-11 16:06:18,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:06:18,807 INFO L225 Difference]: With dead ends: 93922 [2020-10-11 16:06:18,807 INFO L226 Difference]: Without dead ends: 93845 [2020-10-11 16:06:18,807 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-11 16:06:19,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93845 states. [2020-10-11 16:06:20,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93845 to 43794. [2020-10-11 16:06:20,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43794 states. [2020-10-11 16:06:21,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43794 states to 43794 states and 233791 transitions. [2020-10-11 16:06:21,113 INFO L78 Accepts]: Start accepts. Automaton has 43794 states and 233791 transitions. Word has length 27 [2020-10-11 16:06:21,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:06:21,113 INFO L481 AbstractCegarLoop]: Abstraction has 43794 states and 233791 transitions. [2020-10-11 16:06:21,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 16:06:21,114 INFO L276 IsEmpty]: Start isEmpty. Operand 43794 states and 233791 transitions. [2020-10-11 16:06:21,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-11 16:06:21,121 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:06:21,121 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:06:21,121 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2020-10-11 16:06:21,121 INFO L429 AbstractCegarLoop]: === Iteration 75 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:06:21,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:06:21,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1919686780, now seen corresponding path program 1 times [2020-10-11 16:06:21,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:06:21,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128326419] [2020-10-11 16:06:21,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:06:21,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:06:21,198 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-11 16:06:21,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128326419] [2020-10-11 16:06:21,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398137546] [2020-10-11 16:06:21,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:06:21,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:06:21,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 16:06:21,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:06:21,418 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-11 16:06:21,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:06:21,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-11 16:06:21,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786332811] [2020-10-11 16:06:21,419 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-11 16:06:21,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:06:21,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-11 16:06:21,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-11 16:06:21,419 INFO L87 Difference]: Start difference. First operand 43794 states and 233791 transitions. Second operand 16 states. [2020-10-11 16:06:23,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:06:23,422 INFO L93 Difference]: Finished difference Result 140781 states and 654227 transitions. [2020-10-11 16:06:23,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 16:06:23,423 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-11 16:06:23,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:06:24,681 INFO L225 Difference]: With dead ends: 140781 [2020-10-11 16:06:24,682 INFO L226 Difference]: Without dead ends: 140737 [2020-10-11 16:06:24,682 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-11 16:06:25,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140737 states. [2020-10-11 16:06:27,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140737 to 43602. [2020-10-11 16:06:27,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43602 states. [2020-10-11 16:06:27,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43602 states to 43602 states and 232379 transitions. [2020-10-11 16:06:27,506 INFO L78 Accepts]: Start accepts. Automaton has 43602 states and 232379 transitions. Word has length 29 [2020-10-11 16:06:27,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:06:27,506 INFO L481 AbstractCegarLoop]: Abstraction has 43602 states and 232379 transitions. [2020-10-11 16:06:27,506 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-11 16:06:27,506 INFO L276 IsEmpty]: Start isEmpty. Operand 43602 states and 232379 transitions. [2020-10-11 16:06:27,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-11 16:06:27,513 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:06:27,514 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:06:27,714 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:06:27,714 INFO L429 AbstractCegarLoop]: === Iteration 76 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:06:27,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:06:27,715 INFO L82 PathProgramCache]: Analyzing trace with hash -422590804, now seen corresponding path program 1 times [2020-10-11 16:06:27,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:06:27,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000477974] [2020-10-11 16:06:27,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:06:27,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:06:27,791 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-11 16:06:27,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000477974] [2020-10-11 16:06:27,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547869582] [2020-10-11 16:06:27,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:06:27,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:06:27,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 16:06:27,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:06:28,006 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-11 16:06:28,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:06:28,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-11 16:06:28,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551047197] [2020-10-11 16:06:28,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-11 16:06:28,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:06:28,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-11 16:06:28,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-11 16:06:28,008 INFO L87 Difference]: Start difference. First operand 43602 states and 232379 transitions. Second operand 16 states. [2020-10-11 16:06:29,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:06:29,925 INFO L93 Difference]: Finished difference Result 139468 states and 647412 transitions. [2020-10-11 16:06:29,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 16:06:29,925 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-11 16:06:29,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:06:30,340 INFO L225 Difference]: With dead ends: 139468 [2020-10-11 16:06:30,340 INFO L226 Difference]: Without dead ends: 139424 [2020-10-11 16:06:30,340 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-11 16:06:31,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139424 states. [2020-10-11 16:06:33,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139424 to 43506. [2020-10-11 16:06:33,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43506 states. [2020-10-11 16:06:34,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43506 states to 43506 states and 231546 transitions. [2020-10-11 16:06:34,145 INFO L78 Accepts]: Start accepts. Automaton has 43506 states and 231546 transitions. Word has length 29 [2020-10-11 16:06:34,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:06:34,145 INFO L481 AbstractCegarLoop]: Abstraction has 43506 states and 231546 transitions. [2020-10-11 16:06:34,145 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-11 16:06:34,145 INFO L276 IsEmpty]: Start isEmpty. Operand 43506 states and 231546 transitions. [2020-10-11 16:06:34,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-11 16:06:34,152 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:06:34,152 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:06:34,353 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150,77 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:06:34,353 INFO L429 AbstractCegarLoop]: === Iteration 77 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:06:34,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:06:34,354 INFO L82 PathProgramCache]: Analyzing trace with hash 1608517554, now seen corresponding path program 1 times [2020-10-11 16:06:34,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:06:34,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812455048] [2020-10-11 16:06:34,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:06:34,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:06:34,434 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-11 16:06:34,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812455048] [2020-10-11 16:06:34,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920659535] [2020-10-11 16:06:34,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:06:34,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:06:34,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 16:06:34,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:06:34,649 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-11 16:06:34,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:06:34,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-11 16:06:34,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513472459] [2020-10-11 16:06:34,649 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-11 16:06:34,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:06:34,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-11 16:06:34,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-11 16:06:34,650 INFO L87 Difference]: Start difference. First operand 43506 states and 231546 transitions. Second operand 16 states. [2020-10-11 16:06:36,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:06:36,637 INFO L93 Difference]: Finished difference Result 138170 states and 641113 transitions. [2020-10-11 16:06:36,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 16:06:36,637 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-11 16:06:36,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:06:37,045 INFO L225 Difference]: With dead ends: 138170 [2020-10-11 16:06:37,045 INFO L226 Difference]: Without dead ends: 138126 [2020-10-11 16:06:37,045 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-11 16:06:38,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138126 states. [2020-10-11 16:06:39,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138126 to 43481. [2020-10-11 16:06:39,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43481 states. [2020-10-11 16:06:40,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43481 states to 43481 states and 231123 transitions. [2020-10-11 16:06:40,069 INFO L78 Accepts]: Start accepts. Automaton has 43481 states and 231123 transitions. Word has length 29 [2020-10-11 16:06:40,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:06:40,069 INFO L481 AbstractCegarLoop]: Abstraction has 43481 states and 231123 transitions. [2020-10-11 16:06:40,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-11 16:06:40,069 INFO L276 IsEmpty]: Start isEmpty. Operand 43481 states and 231123 transitions. [2020-10-11 16:06:40,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-11 16:06:40,077 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:06:40,077 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:06:40,277 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151,78 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:06:40,277 INFO L429 AbstractCegarLoop]: === Iteration 78 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:06:40,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:06:40,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1153508284, now seen corresponding path program 2 times [2020-10-11 16:06:40,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:06:40,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018929723] [2020-10-11 16:06:40,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:06:40,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:06:40,362 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-11 16:06:40,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018929723] [2020-10-11 16:06:40,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619319156] [2020-10-11 16:06:40,363 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:06:40,448 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 16:06:40,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 16:06:40,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 16:06:40,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:06:40,611 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-11 16:06:40,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:06:40,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-11 16:06:40,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447293123] [2020-10-11 16:06:40,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-11 16:06:40,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:06:40,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-11 16:06:40,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-11 16:06:40,612 INFO L87 Difference]: Start difference. First operand 43481 states and 231123 transitions. Second operand 16 states. [2020-10-11 16:06:42,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:06:42,869 INFO L93 Difference]: Finished difference Result 135919 states and 629813 transitions. [2020-10-11 16:06:42,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 16:06:42,870 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-11 16:06:42,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:06:44,054 INFO L225 Difference]: With dead ends: 135919 [2020-10-11 16:06:44,055 INFO L226 Difference]: Without dead ends: 135873 [2020-10-11 16:06:44,055 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-11 16:06:45,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135873 states. [2020-10-11 16:06:46,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135873 to 43684. [2020-10-11 16:06:46,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43684 states. [2020-10-11 16:06:46,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43684 states to 43684 states and 232067 transitions. [2020-10-11 16:06:46,838 INFO L78 Accepts]: Start accepts. Automaton has 43684 states and 232067 transitions. Word has length 29 [2020-10-11 16:06:46,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:06:46,838 INFO L481 AbstractCegarLoop]: Abstraction has 43684 states and 232067 transitions. [2020-10-11 16:06:46,838 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-11 16:06:46,838 INFO L276 IsEmpty]: Start isEmpty. Operand 43684 states and 232067 transitions. [2020-10-11 16:06:46,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-11 16:06:46,845 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:06:46,845 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:06:47,046 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152,79 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:06:47,046 INFO L429 AbstractCegarLoop]: === Iteration 79 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:06:47,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:06:47,047 INFO L82 PathProgramCache]: Analyzing trace with hash 1153496876, now seen corresponding path program 2 times [2020-10-11 16:06:47,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:06:47,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063259913] [2020-10-11 16:06:47,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:06:47,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:06:47,134 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-11 16:06:47,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063259913] [2020-10-11 16:06:47,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910247980] [2020-10-11 16:06:47,135 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:06:47,247 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 16:06:47,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 16:06:47,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 16:06:47,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:06:47,401 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-11 16:06:47,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:06:47,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-11 16:06:47,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299274299] [2020-10-11 16:06:47,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-11 16:06:47,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:06:47,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-11 16:06:47,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-11 16:06:47,403 INFO L87 Difference]: Start difference. First operand 43684 states and 232067 transitions. Second operand 16 states. [2020-10-11 16:06:49,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:06:49,641 INFO L93 Difference]: Finished difference Result 134838 states and 624786 transitions. [2020-10-11 16:06:49,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 16:06:49,641 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-11 16:06:49,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:06:50,038 INFO L225 Difference]: With dead ends: 134838 [2020-10-11 16:06:50,038 INFO L226 Difference]: Without dead ends: 134792 [2020-10-11 16:06:50,039 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-11 16:06:51,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134792 states. [2020-10-11 16:06:53,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134792 to 43622. [2020-10-11 16:06:53,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43622 states. [2020-10-11 16:06:53,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43622 states to 43622 states and 231628 transitions. [2020-10-11 16:06:53,947 INFO L78 Accepts]: Start accepts. Automaton has 43622 states and 231628 transitions. Word has length 29 [2020-10-11 16:06:53,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:06:53,947 INFO L481 AbstractCegarLoop]: Abstraction has 43622 states and 231628 transitions. [2020-10-11 16:06:53,947 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-11 16:06:53,947 INFO L276 IsEmpty]: Start isEmpty. Operand 43622 states and 231628 transitions. [2020-10-11 16:06:53,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-11 16:06:53,955 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:06:53,955 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:06:54,160 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153,80 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:06:54,161 INFO L429 AbstractCegarLoop]: === Iteration 80 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:06:54,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:06:54,161 INFO L82 PathProgramCache]: Analyzing trace with hash 1153500844, now seen corresponding path program 2 times [2020-10-11 16:06:54,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:06:54,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920314360] [2020-10-11 16:06:54,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:06:54,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:06:54,242 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-11 16:06:54,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920314360] [2020-10-11 16:06:54,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461917880] [2020-10-11 16:06:54,242 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:06:54,330 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 16:06:54,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 16:06:54,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 16:06:54,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:06:54,466 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-11 16:06:54,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:06:54,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-11 16:06:54,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640521263] [2020-10-11 16:06:54,467 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-11 16:06:54,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:06:54,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-11 16:06:54,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-11 16:06:54,468 INFO L87 Difference]: Start difference. First operand 43622 states and 231628 transitions. Second operand 16 states. [2020-10-11 16:06:56,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:06:56,585 INFO L93 Difference]: Finished difference Result 133406 states and 618320 transitions. [2020-10-11 16:06:56,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 16:06:56,586 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-11 16:06:56,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:06:56,982 INFO L225 Difference]: With dead ends: 133406 [2020-10-11 16:06:56,982 INFO L226 Difference]: Without dead ends: 133360 [2020-10-11 16:06:56,983 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-11 16:06:58,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133360 states. [2020-10-11 16:06:59,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133360 to 43128. [2020-10-11 16:06:59,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43128 states. [2020-10-11 16:06:59,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43128 states to 43128 states and 228903 transitions. [2020-10-11 16:06:59,957 INFO L78 Accepts]: Start accepts. Automaton has 43128 states and 228903 transitions. Word has length 29 [2020-10-11 16:06:59,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:06:59,957 INFO L481 AbstractCegarLoop]: Abstraction has 43128 states and 228903 transitions. [2020-10-11 16:06:59,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-11 16:06:59,957 INFO L276 IsEmpty]: Start isEmpty. Operand 43128 states and 228903 transitions. [2020-10-11 16:06:59,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-11 16:06:59,965 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:06:59,965 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:07:00,165 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154,81 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:07:00,166 INFO L429 AbstractCegarLoop]: === Iteration 81 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:07:00,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:07:00,166 INFO L82 PathProgramCache]: Analyzing trace with hash -1591871556, now seen corresponding path program 3 times [2020-10-11 16:07:00,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:07:00,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225783670] [2020-10-11 16:07:00,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:07:00,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:07:00,245 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-11 16:07:00,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225783670] [2020-10-11 16:07:00,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992676592] [2020-10-11 16:07:00,246 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:07:00,341 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-10-11 16:07:00,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 16:07:00,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 16:07:00,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:07:00,483 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-11 16:07:00,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:07:00,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-11 16:07:00,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043750617] [2020-10-11 16:07:00,484 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-11 16:07:00,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:07:00,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-11 16:07:00,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-11 16:07:00,485 INFO L87 Difference]: Start difference. First operand 43128 states and 228903 transitions. Second operand 16 states. [2020-10-11 16:07:02,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:07:02,477 INFO L93 Difference]: Finished difference Result 135323 states and 626681 transitions. [2020-10-11 16:07:02,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 16:07:02,478 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-11 16:07:02,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:07:02,869 INFO L225 Difference]: With dead ends: 135323 [2020-10-11 16:07:02,869 INFO L226 Difference]: Without dead ends: 135279 [2020-10-11 16:07:02,870 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-11 16:07:04,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135279 states. [2020-10-11 16:07:06,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135279 to 42900. [2020-10-11 16:07:06,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42900 states. [2020-10-11 16:07:06,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42900 states to 42900 states and 227522 transitions. [2020-10-11 16:07:06,375 INFO L78 Accepts]: Start accepts. Automaton has 42900 states and 227522 transitions. Word has length 29 [2020-10-11 16:07:06,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:07:06,375 INFO L481 AbstractCegarLoop]: Abstraction has 42900 states and 227522 transitions. [2020-10-11 16:07:06,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-11 16:07:06,375 INFO L276 IsEmpty]: Start isEmpty. Operand 42900 states and 227522 transitions. [2020-10-11 16:07:06,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-11 16:07:06,383 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:07:06,383 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:07:06,583 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155,82 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:07:06,584 INFO L429 AbstractCegarLoop]: === Iteration 82 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:07:06,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:07:06,584 INFO L82 PathProgramCache]: Analyzing trace with hash 1973162059, now seen corresponding path program 1 times [2020-10-11 16:07:06,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:07:06,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976868307] [2020-10-11 16:07:06,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:07:06,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:07:06,673 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-11 16:07:06,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976868307] [2020-10-11 16:07:06,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687318108] [2020-10-11 16:07:06,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:07:06,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:07:06,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 16:07:06,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:07:06,903 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-11 16:07:06,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:07:06,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-11 16:07:06,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67118601] [2020-10-11 16:07:06,904 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-11 16:07:06,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:07:06,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-11 16:07:06,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-11 16:07:06,904 INFO L87 Difference]: Start difference. First operand 42900 states and 227522 transitions. Second operand 16 states. [2020-10-11 16:07:08,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:07:08,801 INFO L93 Difference]: Finished difference Result 141153 states and 654921 transitions. [2020-10-11 16:07:08,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 16:07:08,802 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-11 16:07:08,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:07:09,221 INFO L225 Difference]: With dead ends: 141153 [2020-10-11 16:07:09,221 INFO L226 Difference]: Without dead ends: 141109 [2020-10-11 16:07:09,221 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-11 16:07:10,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141109 states. [2020-10-11 16:07:12,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141109 to 42878. [2020-10-11 16:07:12,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42878 states. [2020-10-11 16:07:12,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42878 states to 42878 states and 227112 transitions. [2020-10-11 16:07:12,227 INFO L78 Accepts]: Start accepts. Automaton has 42878 states and 227112 transitions. Word has length 29 [2020-10-11 16:07:12,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:07:12,228 INFO L481 AbstractCegarLoop]: Abstraction has 42878 states and 227112 transitions. [2020-10-11 16:07:12,228 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-11 16:07:12,228 INFO L276 IsEmpty]: Start isEmpty. Operand 42878 states and 227112 transitions. [2020-10-11 16:07:12,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-11 16:07:12,236 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:07:12,236 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:07:12,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable156 [2020-10-11 16:07:12,437 INFO L429 AbstractCegarLoop]: === Iteration 83 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:07:12,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:07:12,437 INFO L82 PathProgramCache]: Analyzing trace with hash -290696879, now seen corresponding path program 1 times [2020-10-11 16:07:12,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:07:12,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677502847] [2020-10-11 16:07:12,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:07:12,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:07:12,520 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-11 16:07:12,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677502847] [2020-10-11 16:07:12,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413971338] [2020-10-11 16:07:12,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:07:12,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:07:12,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 16:07:12,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:07:13,385 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-11 16:07:13,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:07:13,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-11 16:07:13,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853040891] [2020-10-11 16:07:13,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-11 16:07:13,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:07:13,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-11 16:07:13,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-11 16:07:13,386 INFO L87 Difference]: Start difference. First operand 42878 states and 227112 transitions. Second operand 16 states. [2020-10-11 16:07:15,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:07:15,345 INFO L93 Difference]: Finished difference Result 139558 states and 647187 transitions. [2020-10-11 16:07:15,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 16:07:15,346 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-11 16:07:15,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:07:15,762 INFO L225 Difference]: With dead ends: 139558 [2020-10-11 16:07:15,762 INFO L226 Difference]: Without dead ends: 139514 [2020-10-11 16:07:15,762 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-11 16:07:17,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139514 states. [2020-10-11 16:07:18,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139514 to 42856. [2020-10-11 16:07:18,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42856 states. [2020-10-11 16:07:18,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42856 states to 42856 states and 226689 transitions. [2020-10-11 16:07:18,722 INFO L78 Accepts]: Start accepts. Automaton has 42856 states and 226689 transitions. Word has length 29 [2020-10-11 16:07:18,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:07:18,722 INFO L481 AbstractCegarLoop]: Abstraction has 42856 states and 226689 transitions. [2020-10-11 16:07:18,722 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-11 16:07:18,722 INFO L276 IsEmpty]: Start isEmpty. Operand 42856 states and 226689 transitions. [2020-10-11 16:07:18,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-11 16:07:18,730 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:07:18,730 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:07:18,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 84 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable157 [2020-10-11 16:07:18,931 INFO L429 AbstractCegarLoop]: === Iteration 84 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:07:18,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:07:18,931 INFO L82 PathProgramCache]: Analyzing trace with hash -745717557, now seen corresponding path program 2 times [2020-10-11 16:07:18,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:07:18,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123152046] [2020-10-11 16:07:18,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:07:18,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:07:19,008 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-11 16:07:19,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123152046] [2020-10-11 16:07:19,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136298036] [2020-10-11 16:07:19,009 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:07:19,097 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 16:07:19,097 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 16:07:19,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 16:07:19,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:07:19,230 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-11 16:07:19,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:07:19,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-11 16:07:19,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892575329] [2020-10-11 16:07:19,231 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-11 16:07:19,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:07:19,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-11 16:07:19,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-11 16:07:19,232 INFO L87 Difference]: Start difference. First operand 42856 states and 226689 transitions. Second operand 16 states. [2020-10-11 16:07:21,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:07:21,290 INFO L93 Difference]: Finished difference Result 137680 states and 637585 transitions. [2020-10-11 16:07:21,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 16:07:21,291 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-11 16:07:21,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:07:21,705 INFO L225 Difference]: With dead ends: 137680 [2020-10-11 16:07:21,705 INFO L226 Difference]: Without dead ends: 137630 [2020-10-11 16:07:21,705 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-11 16:07:23,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137630 states. [2020-10-11 16:07:25,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137630 to 42997. [2020-10-11 16:07:25,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42997 states. [2020-10-11 16:07:25,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42997 states to 42997 states and 227356 transitions. [2020-10-11 16:07:25,405 INFO L78 Accepts]: Start accepts. Automaton has 42997 states and 227356 transitions. Word has length 29 [2020-10-11 16:07:25,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:07:25,406 INFO L481 AbstractCegarLoop]: Abstraction has 42997 states and 227356 transitions. [2020-10-11 16:07:25,406 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-11 16:07:25,406 INFO L276 IsEmpty]: Start isEmpty. Operand 42997 states and 227356 transitions. [2020-10-11 16:07:25,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-11 16:07:25,414 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:07:25,414 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:07:25,614 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable158 [2020-10-11 16:07:25,615 INFO L429 AbstractCegarLoop]: === Iteration 85 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:07:25,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:07:25,615 INFO L82 PathProgramCache]: Analyzing trace with hash -745733956, now seen corresponding path program 4 times [2020-10-11 16:07:25,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:07:25,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279111087] [2020-10-11 16:07:25,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:07:25,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:07:25,692 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-11 16:07:25,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279111087] [2020-10-11 16:07:25,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583879320] [2020-10-11 16:07:25,693 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:07:25,780 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 16:07:25,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 16:07:25,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 16:07:25,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:07:25,913 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-11 16:07:25,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:07:25,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-11 16:07:25,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169381976] [2020-10-11 16:07:25,914 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-11 16:07:25,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:07:25,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-11 16:07:25,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-11 16:07:25,915 INFO L87 Difference]: Start difference. First operand 42997 states and 227356 transitions. Second operand 16 states. [2020-10-11 16:07:28,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:07:28,039 INFO L93 Difference]: Finished difference Result 134425 states and 621844 transitions. [2020-10-11 16:07:28,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 16:07:28,040 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-11 16:07:28,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:07:28,431 INFO L225 Difference]: With dead ends: 134425 [2020-10-11 16:07:28,431 INFO L226 Difference]: Without dead ends: 134379 [2020-10-11 16:07:28,432 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-11 16:07:29,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134379 states. [2020-10-11 16:07:31,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134379 to 42935. [2020-10-11 16:07:31,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42935 states. [2020-10-11 16:07:31,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42935 states to 42935 states and 226917 transitions. [2020-10-11 16:07:31,384 INFO L78 Accepts]: Start accepts. Automaton has 42935 states and 226917 transitions. Word has length 29 [2020-10-11 16:07:31,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:07:31,384 INFO L481 AbstractCegarLoop]: Abstraction has 42935 states and 226917 transitions. [2020-10-11 16:07:31,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-11 16:07:31,384 INFO L276 IsEmpty]: Start isEmpty. Operand 42935 states and 226917 transitions. [2020-10-11 16:07:31,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-11 16:07:31,392 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:07:31,392 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:07:31,592 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159,86 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:07:31,593 INFO L429 AbstractCegarLoop]: === Iteration 86 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:07:31,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:07:31,593 INFO L82 PathProgramCache]: Analyzing trace with hash -745713589, now seen corresponding path program 2 times [2020-10-11 16:07:31,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:07:31,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520064501] [2020-10-11 16:07:31,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:07:31,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:07:31,673 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-11 16:07:31,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520064501] [2020-10-11 16:07:31,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040318550] [2020-10-11 16:07:31,673 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:07:31,760 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 16:07:31,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 16:07:31,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 16:07:31,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:07:31,894 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-11 16:07:31,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:07:31,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-11 16:07:31,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69335317] [2020-10-11 16:07:31,895 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-11 16:07:31,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:07:31,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-11 16:07:31,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-11 16:07:31,896 INFO L87 Difference]: Start difference. First operand 42935 states and 226917 transitions. Second operand 16 states. [2020-10-11 16:07:34,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:07:34,416 INFO L93 Difference]: Finished difference Result 135137 states and 625997 transitions. [2020-10-11 16:07:34,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 16:07:34,417 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-11 16:07:34,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:07:34,823 INFO L225 Difference]: With dead ends: 135137 [2020-10-11 16:07:34,823 INFO L226 Difference]: Without dead ends: 135087 [2020-10-11 16:07:34,824 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-11 16:07:36,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135087 states. [2020-10-11 16:07:37,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135087 to 42336. [2020-10-11 16:07:37,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42336 states. [2020-10-11 16:07:37,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42336 states to 42336 states and 223739 transitions. [2020-10-11 16:07:37,699 INFO L78 Accepts]: Start accepts. Automaton has 42336 states and 223739 transitions. Word has length 29 [2020-10-11 16:07:37,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:07:37,699 INFO L481 AbstractCegarLoop]: Abstraction has 42336 states and 223739 transitions. [2020-10-11 16:07:37,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-11 16:07:37,699 INFO L276 IsEmpty]: Start isEmpty. Operand 42336 states and 223739 transitions. [2020-10-11 16:07:37,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-11 16:07:37,707 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:07:37,707 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:07:37,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable160 [2020-10-11 16:07:37,914 INFO L429 AbstractCegarLoop]: === Iteration 87 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:07:37,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:07:37,914 INFO L82 PathProgramCache]: Analyzing trace with hash 1865067275, now seen corresponding path program 3 times [2020-10-11 16:07:37,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:07:37,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652169863] [2020-10-11 16:07:37,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:07:37,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:07:37,995 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-11 16:07:37,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652169863] [2020-10-11 16:07:37,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447826737] [2020-10-11 16:07:37,995 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:07:38,084 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-11 16:07:38,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 16:07:38,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 16:07:38,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:07:38,220 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-11 16:07:38,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:07:38,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-11 16:07:38,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859163155] [2020-10-11 16:07:38,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-11 16:07:38,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:07:38,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-11 16:07:38,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-11 16:07:38,222 INFO L87 Difference]: Start difference. First operand 42336 states and 223739 transitions. Second operand 16 states. [2020-10-11 16:07:40,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:07:40,129 INFO L93 Difference]: Finished difference Result 136349 states and 630987 transitions. [2020-10-11 16:07:40,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 16:07:40,129 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-11 16:07:40,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:07:40,529 INFO L225 Difference]: With dead ends: 136349 [2020-10-11 16:07:40,529 INFO L226 Difference]: Without dead ends: 136305 [2020-10-11 16:07:40,529 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-11 16:07:41,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136305 states. [2020-10-11 16:07:44,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136305 to 42186. [2020-10-11 16:07:44,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42186 states. [2020-10-11 16:07:44,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42186 states to 42186 states and 222832 transitions. [2020-10-11 16:07:44,357 INFO L78 Accepts]: Start accepts. Automaton has 42186 states and 222832 transitions. Word has length 29 [2020-10-11 16:07:44,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:07:44,357 INFO L481 AbstractCegarLoop]: Abstraction has 42186 states and 222832 transitions. [2020-10-11 16:07:44,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-11 16:07:44,357 INFO L276 IsEmpty]: Start isEmpty. Operand 42186 states and 222832 transitions. [2020-10-11 16:07:44,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-11 16:07:44,366 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:07:44,366 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:07:44,566 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable161 [2020-10-11 16:07:44,567 INFO L429 AbstractCegarLoop]: === Iteration 88 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:07:44,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:07:44,567 INFO L82 PathProgramCache]: Analyzing trace with hash 2041985324, now seen corresponding path program 3 times [2020-10-11 16:07:44,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:07:44,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615123616] [2020-10-11 16:07:44,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:07:44,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:07:44,645 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-11 16:07:44,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615123616] [2020-10-11 16:07:44,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113163766] [2020-10-11 16:07:44,646 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:07:44,730 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-11 16:07:44,730 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 16:07:44,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 16:07:44,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:07:44,865 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-11 16:07:44,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:07:44,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-11 16:07:44,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196437361] [2020-10-11 16:07:44,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-11 16:07:44,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:07:44,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-11 16:07:44,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-11 16:07:44,866 INFO L87 Difference]: Start difference. First operand 42186 states and 222832 transitions. Second operand 16 states. [2020-10-11 16:07:47,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:07:47,057 INFO L93 Difference]: Finished difference Result 135812 states and 628090 transitions. [2020-10-11 16:07:47,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 16:07:47,058 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-11 16:07:47,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:07:47,453 INFO L225 Difference]: With dead ends: 135812 [2020-10-11 16:07:47,453 INFO L226 Difference]: Without dead ends: 135768 [2020-10-11 16:07:47,454 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-11 16:07:48,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135768 states. [2020-10-11 16:07:50,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135768 to 42079. [2020-10-11 16:07:50,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42079 states. [2020-10-11 16:07:50,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42079 states to 42079 states and 222233 transitions. [2020-10-11 16:07:50,333 INFO L78 Accepts]: Start accepts. Automaton has 42079 states and 222233 transitions. Word has length 29 [2020-10-11 16:07:50,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:07:50,333 INFO L481 AbstractCegarLoop]: Abstraction has 42079 states and 222233 transitions. [2020-10-11 16:07:50,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-11 16:07:50,333 INFO L276 IsEmpty]: Start isEmpty. Operand 42079 states and 222233 transitions. [2020-10-11 16:07:50,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-11 16:07:50,341 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:07:50,341 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:07:50,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162,89 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:07:50,556 INFO L429 AbstractCegarLoop]: === Iteration 89 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:07:50,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:07:50,556 INFO L82 PathProgramCache]: Analyzing trace with hash -656591999, now seen corresponding path program 1 times [2020-10-11 16:07:50,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:07:50,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777149973] [2020-10-11 16:07:50,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:07:50,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:07:50,641 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-11 16:07:50,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777149973] [2020-10-11 16:07:50,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870094406] [2020-10-11 16:07:50,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:07:50,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:07:50,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 16:07:50,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:07:50,860 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-11 16:07:50,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:07:50,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-11 16:07:50,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676349776] [2020-10-11 16:07:50,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-11 16:07:50,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:07:50,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-11 16:07:50,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-11 16:07:50,862 INFO L87 Difference]: Start difference. First operand 42079 states and 222233 transitions. Second operand 16 states. [2020-10-11 16:07:52,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:07:52,923 INFO L93 Difference]: Finished difference Result 139249 states and 646209 transitions. [2020-10-11 16:07:52,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 16:07:52,924 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-11 16:07:52,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:07:53,341 INFO L225 Difference]: With dead ends: 139249 [2020-10-11 16:07:53,341 INFO L226 Difference]: Without dead ends: 139205 [2020-10-11 16:07:53,341 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-11 16:07:55,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139205 states. [2020-10-11 16:07:56,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139205 to 42066. [2020-10-11 16:07:56,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42066 states. [2020-10-11 16:07:56,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42066 states to 42066 states and 221912 transitions. [2020-10-11 16:07:56,889 INFO L78 Accepts]: Start accepts. Automaton has 42066 states and 221912 transitions. Word has length 29 [2020-10-11 16:07:56,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:07:56,889 INFO L481 AbstractCegarLoop]: Abstraction has 42066 states and 221912 transitions. [2020-10-11 16:07:56,889 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-11 16:07:56,889 INFO L276 IsEmpty]: Start isEmpty. Operand 42066 states and 221912 transitions. [2020-10-11 16:07:56,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-11 16:07:56,898 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:07:56,898 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:07:57,098 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163,90 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:07:57,098 INFO L429 AbstractCegarLoop]: === Iteration 90 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:07:57,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:07:57,099 INFO L82 PathProgramCache]: Analyzing trace with hash -1111601269, now seen corresponding path program 4 times [2020-10-11 16:07:57,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:07:57,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059246148] [2020-10-11 16:07:57,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:07:57,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:07:57,182 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-11 16:07:57,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059246148] [2020-10-11 16:07:57,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495843414] [2020-10-11 16:07:57,183 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:07:57,275 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 16:07:57,275 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 16:07:57,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 16:07:57,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:07:57,437 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-11 16:07:57,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:07:57,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-11 16:07:57,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43051203] [2020-10-11 16:07:57,438 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-11 16:07:57,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:07:57,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-11 16:07:57,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-11 16:07:57,439 INFO L87 Difference]: Start difference. First operand 42066 states and 221912 transitions. Second operand 16 states. [2020-10-11 16:07:59,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:07:59,481 INFO L93 Difference]: Finished difference Result 136710 states and 632229 transitions. [2020-10-11 16:07:59,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 16:07:59,482 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-11 16:07:59,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:07:59,888 INFO L225 Difference]: With dead ends: 136710 [2020-10-11 16:07:59,889 INFO L226 Difference]: Without dead ends: 136660 [2020-10-11 16:07:59,889 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-11 16:08:01,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136660 states. [2020-10-11 16:08:02,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136660 to 42207. [2020-10-11 16:08:02,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42207 states. [2020-10-11 16:08:02,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42207 states to 42207 states and 222579 transitions. [2020-10-11 16:08:02,839 INFO L78 Accepts]: Start accepts. Automaton has 42207 states and 222579 transitions. Word has length 29 [2020-10-11 16:08:02,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:08:02,839 INFO L481 AbstractCegarLoop]: Abstraction has 42207 states and 222579 transitions. [2020-10-11 16:08:02,839 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-11 16:08:02,839 INFO L276 IsEmpty]: Start isEmpty. Operand 42207 states and 222579 transitions. [2020-10-11 16:08:02,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-11 16:08:02,847 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:08:02,847 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:08:03,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164,91 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:08:03,048 INFO L429 AbstractCegarLoop]: === Iteration 91 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:08:03,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:08:03,048 INFO L82 PathProgramCache]: Analyzing trace with hash -1111629076, now seen corresponding path program 4 times [2020-10-11 16:08:03,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:08:03,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215356482] [2020-10-11 16:08:03,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:08:03,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:08:03,127 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-11 16:08:03,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215356482] [2020-10-11 16:08:03,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657740225] [2020-10-11 16:08:03,128 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:08:03,218 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 16:08:03,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 16:08:03,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 16:08:03,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:08:03,352 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-11 16:08:03,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:08:03,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-11 16:08:03,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691547569] [2020-10-11 16:08:03,352 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-11 16:08:03,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:08:03,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-11 16:08:03,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-11 16:08:03,353 INFO L87 Difference]: Start difference. First operand 42207 states and 222579 transitions. Second operand 16 states. [2020-10-11 16:08:05,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:08:05,808 INFO L93 Difference]: Finished difference Result 135625 states and 627192 transitions. [2020-10-11 16:08:05,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 16:08:05,809 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-11 16:08:05,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:08:06,208 INFO L225 Difference]: With dead ends: 135625 [2020-10-11 16:08:06,208 INFO L226 Difference]: Without dead ends: 135575 [2020-10-11 16:08:06,209 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-11 16:08:07,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135575 states. [2020-10-11 16:08:08,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135575 to 42083. [2020-10-11 16:08:08,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42083 states. [2020-10-11 16:08:09,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42083 states to 42083 states and 221863 transitions. [2020-10-11 16:08:09,122 INFO L78 Accepts]: Start accepts. Automaton has 42083 states and 221863 transitions. Word has length 29 [2020-10-11 16:08:09,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:08:09,122 INFO L481 AbstractCegarLoop]: Abstraction has 42083 states and 221863 transitions. [2020-10-11 16:08:09,122 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-11 16:08:09,122 INFO L276 IsEmpty]: Start isEmpty. Operand 42083 states and 221863 transitions. [2020-10-11 16:08:09,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-11 16:08:09,130 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:08:09,130 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:08:09,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable165 [2020-10-11 16:08:09,332 INFO L429 AbstractCegarLoop]: === Iteration 92 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:08:09,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:08:09,332 INFO L82 PathProgramCache]: Analyzing trace with hash -1111608709, now seen corresponding path program 2 times [2020-10-11 16:08:09,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:08:09,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992822128] [2020-10-11 16:08:09,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:08:09,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:08:09,421 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-11 16:08:09,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992822128] [2020-10-11 16:08:09,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595239482] [2020-10-11 16:08:09,422 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:08:09,526 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 16:08:09,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 16:08:09,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 16:08:09,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:08:09,662 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-11 16:08:09,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:08:09,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-11 16:08:09,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723190463] [2020-10-11 16:08:09,663 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-11 16:08:09,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:08:09,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-11 16:08:09,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-11 16:08:09,664 INFO L87 Difference]: Start difference. First operand 42083 states and 221863 transitions. Second operand 16 states. [2020-10-11 16:08:11,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:08:11,921 INFO L93 Difference]: Finished difference Result 135171 states and 626620 transitions. [2020-10-11 16:08:11,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 16:08:11,923 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-11 16:08:11,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:08:12,328 INFO L225 Difference]: With dead ends: 135171 [2020-10-11 16:08:12,328 INFO L226 Difference]: Without dead ends: 135112 [2020-10-11 16:08:12,328 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-11 16:08:13,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135112 states. [2020-10-11 16:08:15,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135112 to 41353. [2020-10-11 16:08:15,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41353 states. [2020-10-11 16:08:16,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41353 states to 41353 states and 218067 transitions. [2020-10-11 16:08:16,103 INFO L78 Accepts]: Start accepts. Automaton has 41353 states and 218067 transitions. Word has length 29 [2020-10-11 16:08:16,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:08:16,104 INFO L481 AbstractCegarLoop]: Abstraction has 41353 states and 218067 transitions. [2020-10-11 16:08:16,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-11 16:08:16,104 INFO L276 IsEmpty]: Start isEmpty. Operand 41353 states and 218067 transitions. [2020-10-11 16:08:16,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-11 16:08:16,116 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:08:16,116 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:08:16,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 93 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable166 [2020-10-11 16:08:16,331 INFO L429 AbstractCegarLoop]: === Iteration 93 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:08:16,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:08:16,331 INFO L82 PathProgramCache]: Analyzing trace with hash 888585425, now seen corresponding path program 3 times [2020-10-11 16:08:16,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:08:16,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702375938] [2020-10-11 16:08:16,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:08:16,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:08:16,411 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-11 16:08:16,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702375938] [2020-10-11 16:08:16,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388108033] [2020-10-11 16:08:16,412 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:08:16,498 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-11 16:08:16,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 16:08:16,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 16:08:16,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:08:16,642 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-11 16:08:16,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:08:16,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-11 16:08:16,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149563354] [2020-10-11 16:08:16,644 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-11 16:08:16,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:08:16,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-11 16:08:16,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-11 16:08:16,644 INFO L87 Difference]: Start difference. First operand 41353 states and 218067 transitions. Second operand 16 states. [2020-10-11 16:08:18,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:08:18,805 INFO L93 Difference]: Finished difference Result 135561 states and 628000 transitions. [2020-10-11 16:08:18,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 16:08:18,806 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-11 16:08:18,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:08:19,209 INFO L225 Difference]: With dead ends: 135561 [2020-10-11 16:08:19,210 INFO L226 Difference]: Without dead ends: 135517 [2020-10-11 16:08:19,210 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-11 16:08:20,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135517 states. [2020-10-11 16:08:21,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135517 to 41345. [2020-10-11 16:08:21,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41345 states. [2020-10-11 16:08:22,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41345 states to 41345 states and 218006 transitions. [2020-10-11 16:08:22,127 INFO L78 Accepts]: Start accepts. Automaton has 41345 states and 218006 transitions. Word has length 29 [2020-10-11 16:08:22,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:08:22,127 INFO L481 AbstractCegarLoop]: Abstraction has 41345 states and 218006 transitions. [2020-10-11 16:08:22,127 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-11 16:08:22,127 INFO L276 IsEmpty]: Start isEmpty. Operand 41345 states and 218006 transitions. [2020-10-11 16:08:22,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-11 16:08:22,136 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:08:22,136 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:08:22,336 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable167 [2020-10-11 16:08:22,337 INFO L429 AbstractCegarLoop]: === Iteration 94 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:08:22,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:08:22,337 INFO L82 PathProgramCache]: Analyzing trace with hash 877622337, now seen corresponding path program 3 times [2020-10-11 16:08:22,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:08:22,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769765336] [2020-10-11 16:08:22,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:08:22,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:08:22,421 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-11 16:08:22,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769765336] [2020-10-11 16:08:22,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636301944] [2020-10-11 16:08:22,422 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:08:22,504 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-11 16:08:22,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 16:08:22,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 16:08:22,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:08:22,648 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-11 16:08:22,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:08:22,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-11 16:08:22,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061985925] [2020-10-11 16:08:22,649 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-11 16:08:22,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:08:22,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-11 16:08:22,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-11 16:08:22,649 INFO L87 Difference]: Start difference. First operand 41345 states and 218006 transitions. Second operand 16 states. [2020-10-11 16:08:24,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:08:24,893 INFO L93 Difference]: Finished difference Result 134714 states and 623609 transitions. [2020-10-11 16:08:24,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 16:08:24,894 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-11 16:08:24,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:08:25,301 INFO L225 Difference]: With dead ends: 134714 [2020-10-11 16:08:25,301 INFO L226 Difference]: Without dead ends: 134670 [2020-10-11 16:08:25,301 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-11 16:08:27,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134670 states. [2020-10-11 16:08:28,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134670 to 41247. [2020-10-11 16:08:28,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41247 states. [2020-10-11 16:08:28,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41247 states to 41247 states and 217534 transitions. [2020-10-11 16:08:28,832 INFO L78 Accepts]: Start accepts. Automaton has 41247 states and 217534 transitions. Word has length 29 [2020-10-11 16:08:28,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:08:28,832 INFO L481 AbstractCegarLoop]: Abstraction has 41247 states and 217534 transitions. [2020-10-11 16:08:28,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-11 16:08:28,833 INFO L276 IsEmpty]: Start isEmpty. Operand 41247 states and 217534 transitions. [2020-10-11 16:08:28,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-11 16:08:28,841 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:08:28,841 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:08:29,041 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable168 [2020-10-11 16:08:29,042 INFO L429 AbstractCegarLoop]: === Iteration 95 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:08:29,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:08:29,042 INFO L82 PathProgramCache]: Analyzing trace with hash 861862898, now seen corresponding path program 3 times [2020-10-11 16:08:29,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:08:29,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128829570] [2020-10-11 16:08:29,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:08:29,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:08:29,124 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-11 16:08:29,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128829570] [2020-10-11 16:08:29,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744324914] [2020-10-11 16:08:29,125 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:08:29,209 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-11 16:08:29,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 16:08:29,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 16:08:29,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:08:29,406 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-11 16:08:29,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:08:29,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-11 16:08:29,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584920375] [2020-10-11 16:08:29,408 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-11 16:08:29,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:08:29,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-11 16:08:29,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-11 16:08:29,408 INFO L87 Difference]: Start difference. First operand 41247 states and 217534 transitions. Second operand 16 states. [2020-10-11 16:08:31,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:08:31,647 INFO L93 Difference]: Finished difference Result 134144 states and 620566 transitions. [2020-10-11 16:08:31,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 16:08:31,648 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-11 16:08:31,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:08:32,044 INFO L225 Difference]: With dead ends: 134144 [2020-10-11 16:08:32,045 INFO L226 Difference]: Without dead ends: 134100 [2020-10-11 16:08:32,045 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-11 16:08:33,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134100 states. [2020-10-11 16:08:34,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134100 to 41026. [2020-10-11 16:08:34,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41026 states. [2020-10-11 16:08:34,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41026 states to 41026 states and 216444 transitions. [2020-10-11 16:08:34,875 INFO L78 Accepts]: Start accepts. Automaton has 41026 states and 216444 transitions. Word has length 29 [2020-10-11 16:08:34,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:08:34,875 INFO L481 AbstractCegarLoop]: Abstraction has 41026 states and 216444 transitions. [2020-10-11 16:08:34,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-11 16:08:34,876 INFO L276 IsEmpty]: Start isEmpty. Operand 41026 states and 216444 transitions. [2020-10-11 16:08:34,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-11 16:08:34,884 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:08:34,884 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:08:35,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable169 [2020-10-11 16:08:35,085 INFO L429 AbstractCegarLoop]: === Iteration 96 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:08:35,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:08:35,085 INFO L82 PathProgramCache]: Analyzing trace with hash 868378385, now seen corresponding path program 4 times [2020-10-11 16:08:35,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:08:35,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701306084] [2020-10-11 16:08:35,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:08:35,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:08:35,174 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-11 16:08:35,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701306084] [2020-10-11 16:08:35,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678943048] [2020-10-11 16:08:35,175 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:08:35,262 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 16:08:35,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 16:08:35,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 16:08:35,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:08:35,401 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-11 16:08:35,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:08:35,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-11 16:08:35,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652110872] [2020-10-11 16:08:35,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-11 16:08:35,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:08:35,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-11 16:08:35,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-11 16:08:35,403 INFO L87 Difference]: Start difference. First operand 41026 states and 216444 transitions. Second operand 16 states. [2020-10-11 16:08:38,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:08:38,039 INFO L93 Difference]: Finished difference Result 136110 states and 630361 transitions. [2020-10-11 16:08:38,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 16:08:38,040 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-11 16:08:38,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:08:38,462 INFO L225 Difference]: With dead ends: 136110 [2020-10-11 16:08:38,462 INFO L226 Difference]: Without dead ends: 136051 [2020-10-11 16:08:38,462 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-11 16:08:39,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136051 states. [2020-10-11 16:08:41,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136051 to 41075. [2020-10-11 16:08:41,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41075 states. [2020-10-11 16:08:41,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41075 states to 41075 states and 216669 transitions. [2020-10-11 16:08:41,281 INFO L78 Accepts]: Start accepts. Automaton has 41075 states and 216669 transitions. Word has length 29 [2020-10-11 16:08:41,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:08:41,281 INFO L481 AbstractCegarLoop]: Abstraction has 41075 states and 216669 transitions. [2020-10-11 16:08:41,281 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-11 16:08:41,281 INFO L276 IsEmpty]: Start isEmpty. Operand 41075 states and 216669 transitions. [2020-10-11 16:08:41,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-11 16:08:41,290 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:08:41,290 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:08:41,490 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable170 [2020-10-11 16:08:41,491 INFO L429 AbstractCegarLoop]: === Iteration 97 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:08:41,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:08:41,491 INFO L82 PathProgramCache]: Analyzing trace with hash 868366977, now seen corresponding path program 4 times [2020-10-11 16:08:41,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:08:41,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030600661] [2020-10-11 16:08:41,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:08:41,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:08:41,574 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-11 16:08:41,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030600661] [2020-10-11 16:08:41,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258531982] [2020-10-11 16:08:41,575 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:08:41,660 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 16:08:41,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 16:08:41,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 16:08:41,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:08:41,800 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-11 16:08:41,801 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:08:41,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-11 16:08:41,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745364344] [2020-10-11 16:08:41,801 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-11 16:08:41,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:08:41,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-11 16:08:41,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-11 16:08:41,802 INFO L87 Difference]: Start difference. First operand 41075 states and 216669 transitions. Second operand 16 states. [2020-10-11 16:08:44,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:08:44,049 INFO L93 Difference]: Finished difference Result 134992 states and 625253 transitions. [2020-10-11 16:08:44,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 16:08:44,050 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-11 16:08:44,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:08:44,454 INFO L225 Difference]: With dead ends: 134992 [2020-10-11 16:08:44,455 INFO L226 Difference]: Without dead ends: 134933 [2020-10-11 16:08:44,455 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-11 16:08:45,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134933 states. [2020-10-11 16:08:47,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134933 to 40832. [2020-10-11 16:08:47,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40832 states. [2020-10-11 16:08:48,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40832 states to 40832 states and 215375 transitions. [2020-10-11 16:08:48,474 INFO L78 Accepts]: Start accepts. Automaton has 40832 states and 215375 transitions. Word has length 29 [2020-10-11 16:08:48,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:08:48,474 INFO L481 AbstractCegarLoop]: Abstraction has 40832 states and 215375 transitions. [2020-10-11 16:08:48,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-11 16:08:48,474 INFO L276 IsEmpty]: Start isEmpty. Operand 40832 states and 215375 transitions. [2020-10-11 16:08:48,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-11 16:08:48,483 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:08:48,483 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:08:48,689 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171,98 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:08:48,690 INFO L429 AbstractCegarLoop]: === Iteration 98 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:08:48,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:08:48,690 INFO L82 PathProgramCache]: Analyzing trace with hash 868350578, now seen corresponding path program 4 times [2020-10-11 16:08:48,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:08:48,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848690404] [2020-10-11 16:08:48,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:08:48,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:08:48,776 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-11 16:08:48,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848690404] [2020-10-11 16:08:48,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955536595] [2020-10-11 16:08:48,777 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:08:48,871 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 16:08:48,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 16:08:48,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 16:08:48,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:08:49,011 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-11 16:08:49,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:08:49,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-11 16:08:49,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245007665] [2020-10-11 16:08:49,011 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-11 16:08:49,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:08:49,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-11 16:08:49,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-11 16:08:49,012 INFO L87 Difference]: Start difference. First operand 40832 states and 215375 transitions. Second operand 16 states. [2020-10-11 16:08:51,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:08:51,233 INFO L93 Difference]: Finished difference Result 133675 states and 619010 transitions. [2020-10-11 16:08:51,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 16:08:51,234 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-11 16:08:51,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:08:51,629 INFO L225 Difference]: With dead ends: 133675 [2020-10-11 16:08:51,630 INFO L226 Difference]: Without dead ends: 133616 [2020-10-11 16:08:51,630 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-11 16:08:52,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133616 states. [2020-10-11 16:08:54,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133616 to 40130. [2020-10-11 16:08:54,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40130 states. [2020-10-11 16:08:54,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40130 states to 40130 states and 211659 transitions. [2020-10-11 16:08:54,478 INFO L78 Accepts]: Start accepts. Automaton has 40130 states and 211659 transitions. Word has length 29 [2020-10-11 16:08:54,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:08:54,478 INFO L481 AbstractCegarLoop]: Abstraction has 40130 states and 211659 transitions. [2020-10-11 16:08:54,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-11 16:08:54,479 INFO L276 IsEmpty]: Start isEmpty. Operand 40130 states and 211659 transitions. [2020-10-11 16:08:54,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-11 16:08:54,486 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:08:54,487 INFO L421 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:08:54,692 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172,99 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:08:54,692 INFO L429 AbstractCegarLoop]: === Iteration 99 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:08:54,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:08:54,693 INFO L82 PathProgramCache]: Analyzing trace with hash 350641582, now seen corresponding path program 1 times [2020-10-11 16:08:54,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:08:54,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426361764] [2020-10-11 16:08:54,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:08:54,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:08:54,732 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-10-11 16:08:54,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426361764] [2020-10-11 16:08:54,732 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:08:54,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 16:08:54,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697813008] [2020-10-11 16:08:54,733 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-11 16:08:54,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:08:54,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-11 16:08:54,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-11 16:08:54,734 INFO L87 Difference]: Start difference. First operand 40130 states and 211659 transitions. Second operand 5 states. [2020-10-11 16:08:55,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:08:55,282 INFO L93 Difference]: Finished difference Result 67092 states and 345298 transitions. [2020-10-11 16:08:55,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-11 16:08:55,283 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2020-10-11 16:08:55,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:08:55,489 INFO L225 Difference]: With dead ends: 67092 [2020-10-11 16:08:55,489 INFO L226 Difference]: Without dead ends: 67028 [2020-10-11 16:08:55,490 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-11 16:08:56,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67028 states. [2020-10-11 16:08:57,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67028 to 49403. [2020-10-11 16:08:57,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49403 states. [2020-10-11 16:08:57,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49403 states to 49403 states and 260758 transitions. [2020-10-11 16:08:57,411 INFO L78 Accepts]: Start accepts. Automaton has 49403 states and 260758 transitions. Word has length 29 [2020-10-11 16:08:57,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:08:57,411 INFO L481 AbstractCegarLoop]: Abstraction has 49403 states and 260758 transitions. [2020-10-11 16:08:57,411 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-11 16:08:57,411 INFO L276 IsEmpty]: Start isEmpty. Operand 49403 states and 260758 transitions. [2020-10-11 16:08:57,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-11 16:08:57,420 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:08:57,420 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:08:57,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2020-10-11 16:08:57,420 INFO L429 AbstractCegarLoop]: === Iteration 100 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:08:57,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:08:57,420 INFO L82 PathProgramCache]: Analyzing trace with hash 1691122699, now seen corresponding path program 5 times [2020-10-11 16:08:57,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:08:57,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272644415] [2020-10-11 16:08:57,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:08:57,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:08:57,498 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-11 16:08:57,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272644415] [2020-10-11 16:08:57,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:08:57,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 16:08:57,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857600414] [2020-10-11 16:08:57,499 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-11 16:08:57,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:08:57,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-11 16:08:57,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-11 16:08:57,500 INFO L87 Difference]: Start difference. First operand 49403 states and 260758 transitions. Second operand 9 states. [2020-10-11 16:08:59,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:08:59,878 INFO L93 Difference]: Finished difference Result 158544 states and 742820 transitions. [2020-10-11 16:08:59,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 16:08:59,879 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-10-11 16:08:59,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:09:00,359 INFO L225 Difference]: With dead ends: 158544 [2020-10-11 16:09:00,359 INFO L226 Difference]: Without dead ends: 158488 [2020-10-11 16:09:00,360 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-11 16:09:01,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158488 states. [2020-10-11 16:09:03,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158488 to 49281. [2020-10-11 16:09:03,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49281 states. [2020-10-11 16:09:03,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49281 states to 49281 states and 259845 transitions. [2020-10-11 16:09:03,803 INFO L78 Accepts]: Start accepts. Automaton has 49281 states and 259845 transitions. Word has length 29 [2020-10-11 16:09:03,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:09:03,803 INFO L481 AbstractCegarLoop]: Abstraction has 49281 states and 259845 transitions. [2020-10-11 16:09:03,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-11 16:09:03,803 INFO L276 IsEmpty]: Start isEmpty. Operand 49281 states and 259845 transitions. [2020-10-11 16:09:03,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-11 16:09:03,813 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:09:03,813 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:09:03,813 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2020-10-11 16:09:03,813 INFO L429 AbstractCegarLoop]: === Iteration 101 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:09:03,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:09:03,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1691106300, now seen corresponding path program 5 times [2020-10-11 16:09:03,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:09:03,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473082022] [2020-10-11 16:09:03,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:09:03,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:09:03,896 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-11 16:09:03,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473082022] [2020-10-11 16:09:03,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:09:03,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 16:09:03,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922822099] [2020-10-11 16:09:03,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-11 16:09:03,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:09:03,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-11 16:09:03,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-11 16:09:03,898 INFO L87 Difference]: Start difference. First operand 49281 states and 259845 transitions. Second operand 9 states. [2020-10-11 16:09:05,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:09:05,845 INFO L93 Difference]: Finished difference Result 156182 states and 731010 transitions. [2020-10-11 16:09:05,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 16:09:05,846 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-10-11 16:09:05,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:09:06,304 INFO L225 Difference]: With dead ends: 156182 [2020-10-11 16:09:06,304 INFO L226 Difference]: Without dead ends: 156126 [2020-10-11 16:09:06,304 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-11 16:09:07,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156126 states. [2020-10-11 16:09:10,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156126 to 48971. [2020-10-11 16:09:10,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48971 states. [2020-10-11 16:09:10,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48971 states to 48971 states and 257988 transitions. [2020-10-11 16:09:10,456 INFO L78 Accepts]: Start accepts. Automaton has 48971 states and 257988 transitions. Word has length 29 [2020-10-11 16:09:10,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:09:10,456 INFO L481 AbstractCegarLoop]: Abstraction has 48971 states and 257988 transitions. [2020-10-11 16:09:10,456 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-11 16:09:10,456 INFO L276 IsEmpty]: Start isEmpty. Operand 48971 states and 257988 transitions. [2020-10-11 16:09:10,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-11 16:09:10,465 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:09:10,465 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:09:10,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2020-10-11 16:09:10,465 INFO L429 AbstractCegarLoop]: === Iteration 102 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:09:10,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:09:10,465 INFO L82 PathProgramCache]: Analyzing trace with hash 1691126667, now seen corresponding path program 5 times [2020-10-11 16:09:10,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:09:10,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353499201] [2020-10-11 16:09:10,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:09:10,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:09:10,542 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-11 16:09:10,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353499201] [2020-10-11 16:09:10,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:09:10,543 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 16:09:10,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830690036] [2020-10-11 16:09:10,544 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-11 16:09:10,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:09:10,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-11 16:09:10,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-11 16:09:10,544 INFO L87 Difference]: Start difference. First operand 48971 states and 257988 transitions. Second operand 9 states. [2020-10-11 16:09:12,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:09:12,480 INFO L93 Difference]: Finished difference Result 153730 states and 719178 transitions. [2020-10-11 16:09:12,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 16:09:12,481 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-10-11 16:09:12,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:09:12,945 INFO L225 Difference]: With dead ends: 153730 [2020-10-11 16:09:12,945 INFO L226 Difference]: Without dead ends: 153674 [2020-10-11 16:09:12,945 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-11 16:09:14,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153674 states. [2020-10-11 16:09:16,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153674 to 48427. [2020-10-11 16:09:16,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48427 states. [2020-10-11 16:09:16,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48427 states to 48427 states and 254935 transitions. [2020-10-11 16:09:16,290 INFO L78 Accepts]: Start accepts. Automaton has 48427 states and 254935 transitions. Word has length 29 [2020-10-11 16:09:16,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:09:16,290 INFO L481 AbstractCegarLoop]: Abstraction has 48427 states and 254935 transitions. [2020-10-11 16:09:16,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-11 16:09:16,290 INFO L276 IsEmpty]: Start isEmpty. Operand 48427 states and 254935 transitions. [2020-10-11 16:09:16,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-11 16:09:16,298 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:09:16,298 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:09:16,298 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2020-10-11 16:09:16,298 INFO L429 AbstractCegarLoop]: === Iteration 103 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:09:16,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:09:16,299 INFO L82 PathProgramCache]: Analyzing trace with hash 1680171019, now seen corresponding path program 6 times [2020-10-11 16:09:16,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:09:16,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018366390] [2020-10-11 16:09:16,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:09:16,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:09:16,384 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-11 16:09:16,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018366390] [2020-10-11 16:09:16,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:09:16,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 16:09:16,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334984341] [2020-10-11 16:09:16,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-11 16:09:16,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:09:16,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-11 16:09:16,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-11 16:09:16,385 INFO L87 Difference]: Start difference. First operand 48427 states and 254935 transitions. Second operand 9 states. [2020-10-11 16:09:18,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:09:18,751 INFO L93 Difference]: Finished difference Result 153132 states and 715258 transitions. [2020-10-11 16:09:18,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 16:09:18,752 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-10-11 16:09:18,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:09:19,215 INFO L225 Difference]: With dead ends: 153132 [2020-10-11 16:09:19,215 INFO L226 Difference]: Without dead ends: 153061 [2020-10-11 16:09:19,216 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-11 16:09:20,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153061 states. [2020-10-11 16:09:22,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153061 to 47511. [2020-10-11 16:09:22,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47511 states. [2020-10-11 16:09:22,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47511 states to 47511 states and 249853 transitions. [2020-10-11 16:09:22,537 INFO L78 Accepts]: Start accepts. Automaton has 47511 states and 249853 transitions. Word has length 29 [2020-10-11 16:09:22,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:09:22,538 INFO L481 AbstractCegarLoop]: Abstraction has 47511 states and 249853 transitions. [2020-10-11 16:09:22,538 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-11 16:09:22,538 INFO L276 IsEmpty]: Start isEmpty. Operand 47511 states and 249853 transitions. [2020-10-11 16:09:22,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-11 16:09:22,545 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:09:22,546 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:09:22,546 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2020-10-11 16:09:22,546 INFO L429 AbstractCegarLoop]: === Iteration 104 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:09:22,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:09:22,546 INFO L82 PathProgramCache]: Analyzing trace with hash 1680143212, now seen corresponding path program 5 times [2020-10-11 16:09:22,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:09:22,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399192332] [2020-10-11 16:09:22,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:09:22,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:09:22,626 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-11 16:09:22,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399192332] [2020-10-11 16:09:22,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:09:22,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 16:09:22,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760112087] [2020-10-11 16:09:22,627 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-11 16:09:22,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:09:22,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-11 16:09:22,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-11 16:09:22,627 INFO L87 Difference]: Start difference. First operand 47511 states and 249853 transitions. Second operand 9 states. [2020-10-11 16:09:24,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:09:24,736 INFO L93 Difference]: Finished difference Result 152943 states and 713344 transitions. [2020-10-11 16:09:24,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 16:09:24,737 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-10-11 16:09:24,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:09:25,192 INFO L225 Difference]: With dead ends: 152943 [2020-10-11 16:09:25,192 INFO L226 Difference]: Without dead ends: 152887 [2020-10-11 16:09:25,192 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-11 16:09:26,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152887 states. [2020-10-11 16:09:29,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152887 to 47324. [2020-10-11 16:09:29,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47324 states. [2020-10-11 16:09:29,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47324 states to 47324 states and 248753 transitions. [2020-10-11 16:09:29,332 INFO L78 Accepts]: Start accepts. Automaton has 47324 states and 248753 transitions. Word has length 29 [2020-10-11 16:09:29,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:09:29,332 INFO L481 AbstractCegarLoop]: Abstraction has 47324 states and 248753 transitions. [2020-10-11 16:09:29,332 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-11 16:09:29,332 INFO L276 IsEmpty]: Start isEmpty. Operand 47324 states and 248753 transitions. [2020-10-11 16:09:29,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-11 16:09:29,340 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:09:29,340 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:09:29,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2020-10-11 16:09:29,340 INFO L429 AbstractCegarLoop]: === Iteration 105 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:09:29,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:09:29,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1680163579, now seen corresponding path program 5 times [2020-10-11 16:09:29,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:09:29,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537384468] [2020-10-11 16:09:29,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:09:29,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:09:29,439 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-11 16:09:29,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537384468] [2020-10-11 16:09:29,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:09:29,440 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 16:09:29,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675253671] [2020-10-11 16:09:29,440 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-11 16:09:29,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:09:29,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-11 16:09:29,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-11 16:09:29,440 INFO L87 Difference]: Start difference. First operand 47324 states and 248753 transitions. Second operand 9 states. [2020-10-11 16:09:31,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:09:31,494 INFO L93 Difference]: Finished difference Result 150780 states and 703178 transitions. [2020-10-11 16:09:31,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 16:09:31,496 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-10-11 16:09:31,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:09:31,955 INFO L225 Difference]: With dead ends: 150780 [2020-10-11 16:09:31,956 INFO L226 Difference]: Without dead ends: 150724 [2020-10-11 16:09:31,956 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-11 16:09:33,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150724 states. [2020-10-11 16:09:35,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150724 to 46868. [2020-10-11 16:09:35,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46868 states. [2020-10-11 16:09:35,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46868 states to 46868 states and 246275 transitions. [2020-10-11 16:09:35,301 INFO L78 Accepts]: Start accepts. Automaton has 46868 states and 246275 transitions. Word has length 29 [2020-10-11 16:09:35,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:09:35,302 INFO L481 AbstractCegarLoop]: Abstraction has 46868 states and 246275 transitions. [2020-10-11 16:09:35,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-11 16:09:35,302 INFO L276 IsEmpty]: Start isEmpty. Operand 46868 states and 246275 transitions. [2020-10-11 16:09:35,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-11 16:09:35,310 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:09:35,310 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:09:35,310 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2020-10-11 16:09:35,310 INFO L429 AbstractCegarLoop]: === Iteration 106 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:09:35,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:09:35,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1664411580, now seen corresponding path program 6 times [2020-10-11 16:09:35,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:09:35,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296338622] [2020-10-11 16:09:35,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:09:35,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:09:35,394 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-11 16:09:35,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296338622] [2020-10-11 16:09:35,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:09:35,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 16:09:35,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957650742] [2020-10-11 16:09:35,394 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-11 16:09:35,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:09:35,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-11 16:09:35,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-11 16:09:35,395 INFO L87 Difference]: Start difference. First operand 46868 states and 246275 transitions. Second operand 9 states. [2020-10-11 16:09:38,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:09:38,029 INFO L93 Difference]: Finished difference Result 150331 states and 700262 transitions. [2020-10-11 16:09:38,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 16:09:38,031 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-10-11 16:09:38,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:09:38,469 INFO L225 Difference]: With dead ends: 150331 [2020-10-11 16:09:38,469 INFO L226 Difference]: Without dead ends: 150260 [2020-10-11 16:09:38,469 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-11 16:09:39,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150260 states. [2020-10-11 16:09:41,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150260 to 46219. [2020-10-11 16:09:41,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46219 states. [2020-10-11 16:09:41,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46219 states to 46219 states and 242740 transitions. [2020-10-11 16:09:41,710 INFO L78 Accepts]: Start accepts. Automaton has 46219 states and 242740 transitions. Word has length 29 [2020-10-11 16:09:41,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:09:41,711 INFO L481 AbstractCegarLoop]: Abstraction has 46219 states and 242740 transitions. [2020-10-11 16:09:41,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-11 16:09:41,711 INFO L276 IsEmpty]: Start isEmpty. Operand 46219 states and 242740 transitions. [2020-10-11 16:09:41,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-11 16:09:41,718 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:09:41,718 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:09:41,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2020-10-11 16:09:41,718 INFO L429 AbstractCegarLoop]: === Iteration 107 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:09:41,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:09:41,719 INFO L82 PathProgramCache]: Analyzing trace with hash 1664400172, now seen corresponding path program 6 times [2020-10-11 16:09:41,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:09:41,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657336429] [2020-10-11 16:09:41,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:09:41,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:09:41,792 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-11 16:09:41,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657336429] [2020-10-11 16:09:41,793 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:09:41,793 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 16:09:41,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348591510] [2020-10-11 16:09:41,793 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-11 16:09:41,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:09:41,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-11 16:09:41,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-11 16:09:41,794 INFO L87 Difference]: Start difference. First operand 46219 states and 242740 transitions. Second operand 9 states. [2020-10-11 16:09:43,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:09:43,621 INFO L93 Difference]: Finished difference Result 148950 states and 693501 transitions. [2020-10-11 16:09:43,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 16:09:43,622 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-10-11 16:09:43,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:09:44,021 INFO L225 Difference]: With dead ends: 148950 [2020-10-11 16:09:44,021 INFO L226 Difference]: Without dead ends: 148879 [2020-10-11 16:09:44,021 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-11 16:09:45,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148879 states. [2020-10-11 16:09:47,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148879 to 45332. [2020-10-11 16:09:47,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45332 states. [2020-10-11 16:09:47,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45332 states to 45332 states and 238000 transitions. [2020-10-11 16:09:47,833 INFO L78 Accepts]: Start accepts. Automaton has 45332 states and 238000 transitions. Word has length 29 [2020-10-11 16:09:47,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:09:47,834 INFO L481 AbstractCegarLoop]: Abstraction has 45332 states and 238000 transitions. [2020-10-11 16:09:47,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-11 16:09:47,834 INFO L276 IsEmpty]: Start isEmpty. Operand 45332 states and 238000 transitions. [2020-10-11 16:09:47,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-11 16:09:47,842 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:09:47,842 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:09:47,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2020-10-11 16:09:47,842 INFO L429 AbstractCegarLoop]: === Iteration 108 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:09:47,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:09:47,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1664404140, now seen corresponding path program 5 times [2020-10-11 16:09:47,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:09:47,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619826383] [2020-10-11 16:09:47,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:09:47,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:09:47,919 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-11 16:09:47,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619826383] [2020-10-11 16:09:47,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:09:47,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 16:09:47,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103714241] [2020-10-11 16:09:47,920 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-11 16:09:47,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:09:47,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-11 16:09:47,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-11 16:09:47,921 INFO L87 Difference]: Start difference. First operand 45332 states and 238000 transitions. Second operand 9 states. [2020-10-11 16:09:49,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:09:49,898 INFO L93 Difference]: Finished difference Result 148687 states and 692117 transitions. [2020-10-11 16:09:49,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 16:09:49,899 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-10-11 16:09:49,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:09:50,335 INFO L225 Difference]: With dead ends: 148687 [2020-10-11 16:09:50,335 INFO L226 Difference]: Without dead ends: 148631 [2020-10-11 16:09:50,335 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-11 16:09:51,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148631 states. [2020-10-11 16:09:53,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148631 to 45016. [2020-10-11 16:09:53,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45016 states. [2020-10-11 16:09:53,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45016 states to 45016 states and 236327 transitions. [2020-10-11 16:09:53,610 INFO L78 Accepts]: Start accepts. Automaton has 45016 states and 236327 transitions. Word has length 29 [2020-10-11 16:09:53,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:09:53,611 INFO L481 AbstractCegarLoop]: Abstraction has 45016 states and 236327 transitions. [2020-10-11 16:09:53,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-11 16:09:53,611 INFO L276 IsEmpty]: Start isEmpty. Operand 45016 states and 236327 transitions. [2020-10-11 16:09:53,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-11 16:09:53,619 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:09:53,619 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:09:53,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2020-10-11 16:09:53,619 INFO L429 AbstractCegarLoop]: === Iteration 109 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:09:53,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:09:53,619 INFO L82 PathProgramCache]: Analyzing trace with hash 1683984267, now seen corresponding path program 6 times [2020-10-11 16:09:53,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:09:53,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980910542] [2020-10-11 16:09:53,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:09:53,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:09:53,708 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-11 16:09:53,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980910542] [2020-10-11 16:09:53,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:09:53,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 16:09:53,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127325596] [2020-10-11 16:09:53,709 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-11 16:09:53,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:09:53,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-11 16:09:53,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-11 16:09:53,709 INFO L87 Difference]: Start difference. First operand 45016 states and 236327 transitions. Second operand 9 states. [2020-10-11 16:09:55,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:09:55,707 INFO L93 Difference]: Finished difference Result 147978 states and 688634 transitions. [2020-10-11 16:09:55,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 16:09:55,708 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-10-11 16:09:55,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:09:56,936 INFO L225 Difference]: With dead ends: 147978 [2020-10-11 16:09:56,936 INFO L226 Difference]: Without dead ends: 147907 [2020-10-11 16:09:56,936 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-11 16:09:58,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147907 states. [2020-10-11 16:09:59,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147907 to 44547. [2020-10-11 16:09:59,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44547 states. [2020-10-11 16:10:00,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44547 states to 44547 states and 233827 transitions. [2020-10-11 16:10:00,012 INFO L78 Accepts]: Start accepts. Automaton has 44547 states and 233827 transitions. Word has length 29 [2020-10-11 16:10:00,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:10:00,012 INFO L481 AbstractCegarLoop]: Abstraction has 44547 states and 233827 transitions. [2020-10-11 16:10:00,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-11 16:10:00,012 INFO L276 IsEmpty]: Start isEmpty. Operand 44547 states and 233827 transitions. [2020-10-11 16:10:00,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-11 16:10:00,020 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:10:00,020 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:10:00,020 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2020-10-11 16:10:00,020 INFO L429 AbstractCegarLoop]: === Iteration 110 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:10:00,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:10:00,020 INFO L82 PathProgramCache]: Analyzing trace with hash 1683972859, now seen corresponding path program 6 times [2020-10-11 16:10:00,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:10:00,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108181467] [2020-10-11 16:10:00,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:10:00,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:10:00,101 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-11 16:10:00,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108181467] [2020-10-11 16:10:00,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:10:00,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 16:10:00,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903954189] [2020-10-11 16:10:00,101 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-11 16:10:00,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:10:00,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-11 16:10:00,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-11 16:10:00,102 INFO L87 Difference]: Start difference. First operand 44547 states and 233827 transitions. Second operand 9 states. [2020-10-11 16:10:02,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:10:02,116 INFO L93 Difference]: Finished difference Result 146514 states and 681741 transitions. [2020-10-11 16:10:02,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 16:10:02,117 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-10-11 16:10:02,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:10:02,546 INFO L225 Difference]: With dead ends: 146514 [2020-10-11 16:10:02,546 INFO L226 Difference]: Without dead ends: 146443 [2020-10-11 16:10:02,546 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-11 16:10:03,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146443 states. [2020-10-11 16:10:06,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146443 to 43886. [2020-10-11 16:10:06,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43886 states. [2020-10-11 16:10:06,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43886 states to 43886 states and 230374 transitions. [2020-10-11 16:10:06,668 INFO L78 Accepts]: Start accepts. Automaton has 43886 states and 230374 transitions. Word has length 29 [2020-10-11 16:10:06,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:10:06,668 INFO L481 AbstractCegarLoop]: Abstraction has 43886 states and 230374 transitions. [2020-10-11 16:10:06,669 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-11 16:10:06,669 INFO L276 IsEmpty]: Start isEmpty. Operand 43886 states and 230374 transitions. [2020-10-11 16:10:06,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-11 16:10:06,676 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:10:06,676 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:10:06,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2020-10-11 16:10:06,676 INFO L429 AbstractCegarLoop]: === Iteration 111 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:10:06,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:10:06,676 INFO L82 PathProgramCache]: Analyzing trace with hash 1683956460, now seen corresponding path program 6 times [2020-10-11 16:10:06,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:10:06,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672498303] [2020-10-11 16:10:06,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:10:06,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:10:06,752 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-11 16:10:06,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672498303] [2020-10-11 16:10:06,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:10:06,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 16:10:06,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886248982] [2020-10-11 16:10:06,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-11 16:10:06,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:10:06,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-11 16:10:06,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-11 16:10:06,753 INFO L87 Difference]: Start difference. First operand 43886 states and 230374 transitions. Second operand 9 states. [2020-10-11 16:10:08,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:10:08,667 INFO L93 Difference]: Finished difference Result 145269 states and 675718 transitions. [2020-10-11 16:10:08,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 16:10:08,669 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-10-11 16:10:08,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:10:09,084 INFO L225 Difference]: With dead ends: 145269 [2020-10-11 16:10:09,084 INFO L226 Difference]: Without dead ends: 145198 [2020-10-11 16:10:09,084 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-11 16:10:10,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145198 states. [2020-10-11 16:10:11,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145198 to 42813. [2020-10-11 16:10:11,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42813 states. [2020-10-11 16:10:12,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42813 states to 42813 states and 224792 transitions. [2020-10-11 16:10:12,137 INFO L78 Accepts]: Start accepts. Automaton has 42813 states and 224792 transitions. Word has length 29 [2020-10-11 16:10:12,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:10:12,137 INFO L481 AbstractCegarLoop]: Abstraction has 42813 states and 224792 transitions. [2020-10-11 16:10:12,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-11 16:10:12,138 INFO L276 IsEmpty]: Start isEmpty. Operand 42813 states and 224792 transitions. [2020-10-11 16:10:12,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-11 16:10:12,147 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:10:12,147 INFO L421 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:10:12,147 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2020-10-11 16:10:12,147 INFO L429 AbstractCegarLoop]: === Iteration 112 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:10:12,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:10:12,148 INFO L82 PathProgramCache]: Analyzing trace with hash -2020768925, now seen corresponding path program 1 times [2020-10-11 16:10:12,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:10:12,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647554098] [2020-10-11 16:10:12,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:10:12,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-11 16:10:12,153 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-11 16:10:12,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-11 16:10:12,157 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-11 16:10:12,163 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-11 16:10:12,164 INFO L519 BasicCegarLoop]: Counterexample might be feasible [2020-10-11 16:10:12,164 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2020-10-11 16:10:12,164 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-11 16:10:12,165 WARN L371 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-11 16:10:12,165 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2020-10-11 16:10:12,182 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,183 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,183 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,183 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,183 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,183 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,184 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,184 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,184 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,184 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,184 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,184 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,184 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,185 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,185 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,185 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,185 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,185 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,185 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,185 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,185 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,186 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,186 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,186 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,186 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,186 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,186 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,186 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,186 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread7of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,187 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread7of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,187 WARN L313 ript$VariableManager]: TermVariabe thr2Thread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,187 WARN L313 ript$VariableManager]: TermVariabe thr2Thread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,187 WARN L313 ript$VariableManager]: TermVariabe thr2Thread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,187 WARN L313 ript$VariableManager]: TermVariabe thr2Thread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,187 WARN L313 ript$VariableManager]: TermVariabe thr2Thread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,187 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,187 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,187 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,187 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,187 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,187 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,187 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,188 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,188 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,188 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,188 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,188 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,188 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,188 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,188 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,188 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,188 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,188 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,188 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,188 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,189 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,189 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,189 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,189 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,189 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,189 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,189 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,189 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,189 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,189 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,189 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,189 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,190 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,190 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,190 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,190 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,190 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,190 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,190 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,190 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,190 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,190 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,191 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,191 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,191 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,191 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,191 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,191 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,191 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,191 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,191 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,191 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,191 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,191 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,192 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,192 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,192 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,192 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,192 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,192 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,192 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,192 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,192 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,192 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,192 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,192 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,192 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,193 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,193 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,193 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,193 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,193 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,193 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,193 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,193 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,193 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,193 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,193 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,193 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,193 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,194 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,194 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,194 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,194 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,194 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,194 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,194 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,194 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,194 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,196 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,196 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,196 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,196 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,196 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,197 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,197 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,198 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,198 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,198 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,199 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,199 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,199 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,199 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,200 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,201 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,201 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,201 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,201 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,202 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,204 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,204 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,204 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,204 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,205 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,206 WARN L313 ript$VariableManager]: TermVariabe thr2Thread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,206 WARN L313 ript$VariableManager]: TermVariabe thr2Thread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,206 WARN L313 ript$VariableManager]: TermVariabe thr2Thread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,206 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread7of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,206 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread7of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,207 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,207 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,207 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,208 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,208 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,208 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,209 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,209 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,209 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,209 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,209 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,209 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,211 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,211 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,211 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,211 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,211 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,211 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,213 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,213 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,213 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,213 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,213 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,214 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,215 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,215 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,215 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,215 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,215 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,215 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,216 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,217 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,217 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,217 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,217 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,217 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,218 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,218 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,218 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,218 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,218 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,219 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:12,220 INFO L253 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2020-10-11 16:10:12,220 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 16:10:12,220 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-11 16:10:12,220 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 16:10:12,220 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 16:10:12,220 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 16:10:12,220 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 16:10:12,220 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 16:10:12,220 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 16:10:12,222 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-11 16:10:12,222 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 175 places, 154 transitions, 462 flow [2020-10-11 16:10:12,222 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 175 places, 154 transitions, 462 flow [2020-10-11 16:10:12,222 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 175 places, 154 transitions, 462 flow [2020-10-11 16:10:12,240 INFO L129 PetriNetUnfolder]: 10/194 cut-off events. [2020-10-11 16:10:12,240 INFO L130 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2020-10-11 16:10:12,241 INFO L80 FinitePrefix]: Finished finitePrefix Result has 253 conditions, 194 events. 10/194 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 324 event pairs, 0 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 238. Up to 16 conditions per place. [2020-10-11 16:10:12,248 INFO L117 LiptonReduction]: Number of co-enabled transitions 3460 [2020-10-11 16:10:15,218 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2020-10-11 16:10:15,759 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2020-10-11 16:10:15,942 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-11 16:10:16,170 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 65 [2020-10-11 16:10:16,276 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-11 16:10:16,286 INFO L132 LiptonReduction]: Checked pairs total: 6416 [2020-10-11 16:10:16,287 INFO L134 LiptonReduction]: Total number of compositions: 141 [2020-10-11 16:10:16,287 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 81 places, 51 transitions, 256 flow [2020-10-11 16:10:26,096 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 55763 states. [2020-10-11 16:10:26,096 INFO L276 IsEmpty]: Start isEmpty. Operand 55763 states. [2020-10-11 16:10:26,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-11 16:10:26,096 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:10:26,096 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-11 16:10:26,096 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:10:26,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:10:26,097 INFO L82 PathProgramCache]: Analyzing trace with hash 1607054, now seen corresponding path program 1 times [2020-10-11 16:10:26,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:10:26,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914726654] [2020-10-11 16:10:26,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:10:26,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:10:26,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:10:26,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914726654] [2020-10-11 16:10:26,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:10:26,112 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-11 16:10:26,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225415866] [2020-10-11 16:10:26,112 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 16:10:26,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:10:26,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 16:10:26,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 16:10:26,113 INFO L87 Difference]: Start difference. First operand 55763 states. Second operand 3 states. [2020-10-11 16:10:26,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:10:26,526 INFO L93 Difference]: Finished difference Result 54360 states and 318970 transitions. [2020-10-11 16:10:26,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 16:10:26,528 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-11 16:10:26,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:10:26,708 INFO L225 Difference]: With dead ends: 54360 [2020-10-11 16:10:26,708 INFO L226 Difference]: Without dead ends: 51079 [2020-10-11 16:10:26,708 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 16:10:30,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51079 states. [2020-10-11 16:10:30,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51079 to 51079. [2020-10-11 16:10:30,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51079 states. [2020-10-11 16:10:30,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51079 states to 51079 states and 298193 transitions. [2020-10-11 16:10:30,967 INFO L78 Accepts]: Start accepts. Automaton has 51079 states and 298193 transitions. Word has length 3 [2020-10-11 16:10:30,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:10:30,967 INFO L481 AbstractCegarLoop]: Abstraction has 51079 states and 298193 transitions. [2020-10-11 16:10:30,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 16:10:30,968 INFO L276 IsEmpty]: Start isEmpty. Operand 51079 states and 298193 transitions. [2020-10-11 16:10:30,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-11 16:10:30,968 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:10:30,968 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:10:30,968 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2020-10-11 16:10:30,968 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:10:30,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:10:30,968 INFO L82 PathProgramCache]: Analyzing trace with hash -993793982, now seen corresponding path program 1 times [2020-10-11 16:10:30,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:10:30,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394803222] [2020-10-11 16:10:30,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:10:30,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:10:31,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:10:31,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394803222] [2020-10-11 16:10:31,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:10:31,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 16:10:31,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387852246] [2020-10-11 16:10:31,001 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-11 16:10:31,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:10:31,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-11 16:10:31,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-11 16:10:31,002 INFO L87 Difference]: Start difference. First operand 51079 states and 298193 transitions. Second operand 5 states. [2020-10-11 16:10:34,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:10:34,864 INFO L93 Difference]: Finished difference Result 96937 states and 538177 transitions. [2020-10-11 16:10:34,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-11 16:10:34,866 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-11 16:10:34,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:10:35,177 INFO L225 Difference]: With dead ends: 96937 [2020-10-11 16:10:35,177 INFO L226 Difference]: Without dead ends: 96928 [2020-10-11 16:10:35,178 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-11 16:10:39,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96928 states. [2020-10-11 16:10:40,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96928 to 61361. [2020-10-11 16:10:40,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61361 states. [2020-10-11 16:10:40,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61361 states to 61361 states and 361700 transitions. [2020-10-11 16:10:40,708 INFO L78 Accepts]: Start accepts. Automaton has 61361 states and 361700 transitions. Word has length 9 [2020-10-11 16:10:40,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:10:40,709 INFO L481 AbstractCegarLoop]: Abstraction has 61361 states and 361700 transitions. [2020-10-11 16:10:40,709 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-11 16:10:40,709 INFO L276 IsEmpty]: Start isEmpty. Operand 61361 states and 361700 transitions. [2020-10-11 16:10:40,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 16:10:40,709 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:10:40,709 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:10:40,709 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2020-10-11 16:10:40,709 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:10:40,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:10:40,709 INFO L82 PathProgramCache]: Analyzing trace with hash -250834384, now seen corresponding path program 1 times [2020-10-11 16:10:40,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:10:40,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349473652] [2020-10-11 16:10:40,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:10:40,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:10:40,745 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-11 16:10:40,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349473652] [2020-10-11 16:10:40,746 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:10:40,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 16:10:40,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396167425] [2020-10-11 16:10:40,746 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-11 16:10:40,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:10:40,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-11 16:10:40,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-11 16:10:40,747 INFO L87 Difference]: Start difference. First operand 61361 states and 361700 transitions. Second operand 5 states. [2020-10-11 16:10:42,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:10:42,915 INFO L93 Difference]: Finished difference Result 115105 states and 647870 transitions. [2020-10-11 16:10:42,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-11 16:10:42,916 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-11 16:10:42,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:10:43,336 INFO L225 Difference]: With dead ends: 115105 [2020-10-11 16:10:43,336 INFO L226 Difference]: Without dead ends: 115086 [2020-10-11 16:10:43,337 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-11 16:10:47,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115086 states. [2020-10-11 16:10:49,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115086 to 74729. [2020-10-11 16:10:49,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74729 states. [2020-10-11 16:10:49,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74729 states to 74729 states and 446528 transitions. [2020-10-11 16:10:49,740 INFO L78 Accepts]: Start accepts. Automaton has 74729 states and 446528 transitions. Word has length 13 [2020-10-11 16:10:49,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:10:49,740 INFO L481 AbstractCegarLoop]: Abstraction has 74729 states and 446528 transitions. [2020-10-11 16:10:49,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-11 16:10:49,740 INFO L276 IsEmpty]: Start isEmpty. Operand 74729 states and 446528 transitions. [2020-10-11 16:10:49,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-11 16:10:49,741 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:10:49,741 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:10:49,741 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2020-10-11 16:10:49,741 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:10:49,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:10:49,741 INFO L82 PathProgramCache]: Analyzing trace with hash -1217517960, now seen corresponding path program 1 times [2020-10-11 16:10:49,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:10:49,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080124289] [2020-10-11 16:10:49,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:10:49,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:10:49,791 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:10:49,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080124289] [2020-10-11 16:10:49,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984007961] [2020-10-11 16:10:49,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:10:49,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:10:49,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-11 16:10:49,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:10:49,985 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:10:49,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:10:49,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-11 16:10:49,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110770648] [2020-10-11 16:10:49,986 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-11 16:10:49,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:10:49,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-11 16:10:49,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-11 16:10:49,987 INFO L87 Difference]: Start difference. First operand 74729 states and 446528 transitions. Second operand 12 states. [2020-10-11 16:10:54,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:10:54,917 INFO L93 Difference]: Finished difference Result 183405 states and 977356 transitions. [2020-10-11 16:10:54,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 16:10:54,918 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-11 16:10:54,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. Received shutdown request... [2020-10-11 16:10:55,525 INFO L225 Difference]: With dead ends: 183405 [2020-10-11 16:10:55,525 INFO L226 Difference]: Without dead ends: 183386 [2020-10-11 16:10:55,525 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 Cannot interrupt operation gracefully because timeout expired. Forcing shutdown