/usr/bin/java -Xmx8000000000 -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-lit/fkp2013-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 11:23:13,179 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 11:23:13,182 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 11:23:13,209 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-16 11:23:13,229 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 11:23:13,230 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 11:23:13,233 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 11:23:13,235 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 11:23:13,236 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 11:23:13,239 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 11:23:13,241 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 11:23:13,247 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 11:23:13,250 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 11:23:13,251 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 11:23:13,252 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 11:23:13,253 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 11:23:13,265 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 11:23:13,270 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 11:23:13,272 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 11:23:13,273 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 11:23:13,274 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 11:23:13,275 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 11:23:13,276 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 11:23:13,276 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 11:23:13,277 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 11:23:13,277 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 11:23:13,278 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 11:23:13,278 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 11:23:13,279 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-16 11:23:13,321 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 11:23:13,321 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 11:23:13,323 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 11:23:13,323 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 11:23:13,323 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 11:23:13,324 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 11:23:13,324 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 11:23:13,324 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 11:23:13,324 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 11:23:13,324 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 11:23:13,325 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 11:23:13,326 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 11:23:13,326 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 11:23:13,326 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 11:23:13,326 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 11:23:13,326 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 11:23:13,327 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 11:23:13,327 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 11:23:13,329 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 11:23:13,329 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 11:23:13,329 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 11:23:13,329 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 11:23:13,330 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 11:23:13,330 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 11:23:13,330 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 11:23:13,330 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 11:23:13,330 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 11:23:13,330 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 11:23:13,330 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-16 11:23:13,331 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 11:23:13,639 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 11:23:13,657 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 11:23:13,662 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 11:23:13,663 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 11:23:13,664 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 11:23:13,665 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-lit/fkp2013-2.i [2020-10-16 11:23:13,739 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/87623642b/672381146e09435ebc7af4d750777f04/FLAG9876a67c2 [2020-10-16 11:23:14,265 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 11:23:14,266 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-lit/fkp2013-2.i [2020-10-16 11:23:14,278 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/87623642b/672381146e09435ebc7af4d750777f04/FLAG9876a67c2 [2020-10-16 11:23:14,551 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/87623642b/672381146e09435ebc7af4d750777f04 [2020-10-16 11:23:14,560 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 11:23:14,561 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 11:23:14,563 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 11:23:14,564 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 11:23:14,567 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 11:23:14,568 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:23:14" (1/1) ... [2020-10-16 11:23:14,572 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@443da626 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:14, skipping insertion in model container [2020-10-16 11:23:14,572 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:23:14" (1/1) ... [2020-10-16 11:23:14,582 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 11:23:14,624 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 11:23:15,105 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 11:23:15,124 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 11:23:15,199 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 11:23:15,289 INFO L208 MainTranslator]: Completed translation [2020-10-16 11:23:15,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:15 WrapperNode [2020-10-16 11:23:15,291 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 11:23:15,292 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 11:23:15,292 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 11:23:15,292 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 11:23:15,301 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:15" (1/1) ... [2020-10-16 11:23:15,327 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:15" (1/1) ... [2020-10-16 11:23:15,347 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 11:23:15,347 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 11:23:15,347 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 11:23:15,347 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 11:23:15,355 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:15" (1/1) ... [2020-10-16 11:23:15,355 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:15" (1/1) ... [2020-10-16 11:23:15,357 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:15" (1/1) ... [2020-10-16 11:23:15,358 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:15" (1/1) ... [2020-10-16 11:23:15,363 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:15" (1/1) ... [2020-10-16 11:23:15,367 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:15" (1/1) ... [2020-10-16 11:23:15,369 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:15" (1/1) ... [2020-10-16 11:23:15,372 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 11:23:15,372 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 11:23:15,373 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 11:23:15,373 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 11:23:15,374 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:15" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:23:15,436 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-10-16 11:23:15,437 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-10-16 11:23:15,437 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-16 11:23:15,437 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-16 11:23:15,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 11:23:15,437 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 11:23:15,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 11:23:15,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 11:23:15,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 11:23:15,439 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 11:23:15,774 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 11:23:15,774 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-10-16 11:23:15,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:23:15 BoogieIcfgContainer [2020-10-16 11:23:15,777 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 11:23:15,778 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 11:23:15,778 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 11:23:15,782 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 11:23:15,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 11:23:14" (1/3) ... [2020-10-16 11:23:15,783 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ee24533 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:23:15, skipping insertion in model container [2020-10-16 11:23:15,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:15" (2/3) ... [2020-10-16 11:23:15,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ee24533 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:23:15, skipping insertion in model container [2020-10-16 11:23:15,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:23:15" (3/3) ... [2020-10-16 11:23:15,786 INFO L111 eAbstractionObserver]: Analyzing ICFG fkp2013-2.i [2020-10-16 11:23:15,798 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 11:23:15,799 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 11:23:15,807 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 11:23:15,808 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 11:23:15,834 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:15,835 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:15,835 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:15,836 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:15,836 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:15,836 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:15,837 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:15,837 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:15,837 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:15,838 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:15,838 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:15,839 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:15,839 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:15,839 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:15,840 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:15,840 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:15,840 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:15,840 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:15,841 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:15,841 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:15,841 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:15,845 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:15,845 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:15,846 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:15,846 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:15,847 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:15,856 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:15,856 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:15,857 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:15,857 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:15,857 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:15,857 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:15,859 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 11:23:15,872 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 11:23:15,888 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 11:23:15,889 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 11:23:15,889 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 11:23:15,889 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 11:23:15,889 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 11:23:15,889 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 11:23:15,890 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 11:23:15,890 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 11:23:15,901 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 11:23:15,904 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 55 places, 51 transitions, 112 flow [2020-10-16 11:23:15,906 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 55 places, 51 transitions, 112 flow [2020-10-16 11:23:15,908 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 55 places, 51 transitions, 112 flow [2020-10-16 11:23:15,945 INFO L129 PetriNetUnfolder]: 3/61 cut-off events. [2020-10-16 11:23:15,945 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 11:23:15,952 INFO L80 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 61 events. 3/61 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 100 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 49. Up to 4 conditions per place. [2020-10-16 11:23:15,955 INFO L117 LiptonReduction]: Number of co-enabled transitions 692 [2020-10-16 11:23:17,020 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-10-16 11:23:17,079 INFO L132 LiptonReduction]: Checked pairs total: 670 [2020-10-16 11:23:17,080 INFO L134 LiptonReduction]: Total number of compositions: 47 [2020-10-16 11:23:17,088 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 18 places, 12 transitions, 34 flow [2020-10-16 11:23:17,100 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 44 states. [2020-10-16 11:23:17,102 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-10-16 11:23:17,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-16 11:23:17,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:17,110 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-16 11:23:17,110 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 11:23:17,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:17,116 INFO L82 PathProgramCache]: Analyzing trace with hash 208056, now seen corresponding path program 1 times [2020-10-16 11:23:17,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:17,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745129515] [2020-10-16 11:23:17,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:17,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:17,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:17,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745129515] [2020-10-16 11:23:17,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:17,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 11:23:17,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962319545] [2020-10-16 11:23:17,342 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:23:17,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:17,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:23:17,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:23:17,357 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 3 states. [2020-10-16 11:23:17,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:17,386 INFO L93 Difference]: Finished difference Result 35 states and 59 transitions. [2020-10-16 11:23:17,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:23:17,389 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-16 11:23:17,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:17,400 INFO L225 Difference]: With dead ends: 35 [2020-10-16 11:23:17,400 INFO L226 Difference]: Without dead ends: 31 [2020-10-16 11:23:17,402 INFO L677 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 [2020-10-16 11:23:17,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-16 11:23:17,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-16 11:23:17,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-16 11:23:17,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 51 transitions. [2020-10-16 11:23:17,443 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 51 transitions. Word has length 3 [2020-10-16 11:23:17,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:17,443 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 51 transitions. [2020-10-16 11:23:17,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:23:17,444 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 51 transitions. [2020-10-16 11:23:17,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-16 11:23:17,445 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:17,445 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:17,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 11:23:17,445 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 11:23:17,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:17,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1139052385, now seen corresponding path program 1 times [2020-10-16 11:23:17,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:17,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406330411] [2020-10-16 11:23:17,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:17,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:17,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:17,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406330411] [2020-10-16 11:23:17,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:17,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 11:23:17,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078254636] [2020-10-16 11:23:17,540 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 11:23:17,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:17,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 11:23:17,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:23:17,541 INFO L87 Difference]: Start difference. First operand 31 states and 51 transitions. Second operand 4 states. [2020-10-16 11:23:17,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:17,555 INFO L93 Difference]: Finished difference Result 26 states and 42 transitions. [2020-10-16 11:23:17,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 11:23:17,556 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-16 11:23:17,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:17,557 INFO L225 Difference]: With dead ends: 26 [2020-10-16 11:23:17,557 INFO L226 Difference]: Without dead ends: 24 [2020-10-16 11:23:17,558 INFO L677 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 [2020-10-16 11:23:17,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-16 11:23:17,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-10-16 11:23:17,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-16 11:23:17,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 39 transitions. [2020-10-16 11:23:17,563 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 39 transitions. Word has length 7 [2020-10-16 11:23:17,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:17,563 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 39 transitions. [2020-10-16 11:23:17,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 11:23:17,564 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 39 transitions. [2020-10-16 11:23:17,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 11:23:17,564 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:17,564 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:17,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 11:23:17,565 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 11:23:17,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:17,565 INFO L82 PathProgramCache]: Analyzing trace with hash -950894116, now seen corresponding path program 1 times [2020-10-16 11:23:17,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:17,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95946414] [2020-10-16 11:23:17,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:17,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 11:23:17,592 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 11:23:17,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 11:23:17,605 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 11:23:17,634 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 11:23:17,634 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 11:23:17,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 11:23:17,636 WARN L371 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 11:23:17,637 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-10-16 11:23:17,654 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,654 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,654 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,654 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,655 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,655 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,655 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,655 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,655 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,656 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,656 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,656 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,656 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,659 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,659 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,660 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,660 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,660 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,661 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,661 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,661 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,661 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,661 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,661 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,667 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,667 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,667 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,668 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,668 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,668 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,669 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,669 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,669 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,669 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,669 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,670 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,670 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,670 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,670 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,671 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,671 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,672 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,672 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,672 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,673 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,673 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,673 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,677 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,678 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,678 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,678 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,678 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,682 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,683 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,683 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,683 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,684 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,684 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,685 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,686 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,686 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,686 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,686 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,686 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,688 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 11:23:17,689 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-16 11:23:17,689 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 11:23:17,689 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 11:23:17,689 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 11:23:17,689 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 11:23:17,689 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 11:23:17,690 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 11:23:17,690 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 11:23:17,690 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 11:23:17,693 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 11:23:17,694 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 69 transitions, 162 flow [2020-10-16 11:23:17,694 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 76 places, 69 transitions, 162 flow [2020-10-16 11:23:17,694 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 69 transitions, 162 flow [2020-10-16 11:23:17,737 INFO L129 PetriNetUnfolder]: 4/83 cut-off events. [2020-10-16 11:23:17,737 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-16 11:23:17,741 INFO L80 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 83 events. 4/83 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 141 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 92. Up to 6 conditions per place. [2020-10-16 11:23:17,746 INFO L117 LiptonReduction]: Number of co-enabled transitions 1108 [2020-10-16 11:23:18,869 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-10-16 11:23:18,927 INFO L132 LiptonReduction]: Checked pairs total: 1240 [2020-10-16 11:23:18,927 INFO L134 LiptonReduction]: Total number of compositions: 62 [2020-10-16 11:23:18,928 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 66 flow [2020-10-16 11:23:18,941 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 224 states. [2020-10-16 11:23:18,942 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states. [2020-10-16 11:23:18,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-16 11:23:18,942 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:18,943 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-16 11:23:18,943 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:23:18,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:18,943 INFO L82 PathProgramCache]: Analyzing trace with hash 354555, now seen corresponding path program 1 times [2020-10-16 11:23:18,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:18,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852012962] [2020-10-16 11:23:18,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:18,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:19,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:19,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852012962] [2020-10-16 11:23:19,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:19,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 11:23:19,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190592550] [2020-10-16 11:23:19,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:23:19,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:19,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:23:19,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:23:19,004 INFO L87 Difference]: Start difference. First operand 224 states. Second operand 3 states. [2020-10-16 11:23:19,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:19,032 INFO L93 Difference]: Finished difference Result 185 states and 459 transitions. [2020-10-16 11:23:19,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:23:19,033 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-16 11:23:19,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:19,038 INFO L225 Difference]: With dead ends: 185 [2020-10-16 11:23:19,038 INFO L226 Difference]: Without dead ends: 171 [2020-10-16 11:23:19,038 INFO L677 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 [2020-10-16 11:23:19,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-16 11:23:19,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2020-10-16 11:23:19,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-16 11:23:19,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 418 transitions. [2020-10-16 11:23:19,069 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 418 transitions. Word has length 3 [2020-10-16 11:23:19,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:19,070 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 418 transitions. [2020-10-16 11:23:19,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:23:19,070 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 418 transitions. [2020-10-16 11:23:19,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 11:23:19,071 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:19,071 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:19,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 11:23:19,071 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:23:19,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:19,072 INFO L82 PathProgramCache]: Analyzing trace with hash -1106209149, now seen corresponding path program 1 times [2020-10-16 11:23:19,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:19,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511007018] [2020-10-16 11:23:19,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:19,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:19,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:19,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511007018] [2020-10-16 11:23:19,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:19,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:23:19,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300852769] [2020-10-16 11:23:19,160 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:23:19,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:19,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:23:19,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:23:19,161 INFO L87 Difference]: Start difference. First operand 171 states and 418 transitions. Second operand 5 states. [2020-10-16 11:23:19,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:19,216 INFO L93 Difference]: Finished difference Result 205 states and 460 transitions. [2020-10-16 11:23:19,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 11:23:19,216 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-16 11:23:19,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:19,219 INFO L225 Difference]: With dead ends: 205 [2020-10-16 11:23:19,219 INFO L226 Difference]: Without dead ends: 201 [2020-10-16 11:23:19,220 INFO L677 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 [2020-10-16 11:23:19,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-10-16 11:23:19,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 162. [2020-10-16 11:23:19,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-16 11:23:19,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 399 transitions. [2020-10-16 11:23:19,242 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 399 transitions. Word has length 9 [2020-10-16 11:23:19,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:19,243 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 399 transitions. [2020-10-16 11:23:19,243 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:23:19,243 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 399 transitions. [2020-10-16 11:23:19,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 11:23:19,244 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:19,244 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:19,245 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 11:23:19,245 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:23:19,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:19,245 INFO L82 PathProgramCache]: Analyzing trace with hash 583411714, now seen corresponding path program 1 times [2020-10-16 11:23:19,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:19,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631064746] [2020-10-16 11:23:19,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:19,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:19,293 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 11:23:19,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631064746] [2020-10-16 11:23:19,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:19,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:23:19,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340752838] [2020-10-16 11:23:19,294 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:23:19,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:19,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:23:19,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:23:19,295 INFO L87 Difference]: Start difference. First operand 162 states and 399 transitions. Second operand 5 states. [2020-10-16 11:23:19,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:19,345 INFO L93 Difference]: Finished difference Result 189 states and 423 transitions. [2020-10-16 11:23:19,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 11:23:19,346 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-16 11:23:19,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:19,348 INFO L225 Difference]: With dead ends: 189 [2020-10-16 11:23:19,348 INFO L226 Difference]: Without dead ends: 185 [2020-10-16 11:23:19,349 INFO L677 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 [2020-10-16 11:23:19,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-16 11:23:19,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 153. [2020-10-16 11:23:19,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-16 11:23:19,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 367 transitions. [2020-10-16 11:23:19,364 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 367 transitions. Word has length 13 [2020-10-16 11:23:19,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:19,365 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 367 transitions. [2020-10-16 11:23:19,365 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:23:19,365 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 367 transitions. [2020-10-16 11:23:19,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 11:23:19,367 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:19,367 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:19,367 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 11:23:19,367 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:23:19,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:19,368 INFO L82 PathProgramCache]: Analyzing trace with hash 903154619, now seen corresponding path program 1 times [2020-10-16 11:23:19,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:19,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643529090] [2020-10-16 11:23:19,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:19,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 11:23:19,383 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 11:23:19,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 11:23:19,393 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 11:23:19,400 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 11:23:19,400 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 11:23:19,400 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 11:23:19,401 WARN L371 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 11:23:19,402 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-10-16 11:23:19,412 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,412 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,412 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,412 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,413 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,413 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,413 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,413 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,413 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,414 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,414 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,414 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,414 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,414 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,414 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,415 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,415 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,415 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,415 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,415 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,415 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,416 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,416 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,416 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,416 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,416 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,416 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,417 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,417 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,417 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,427 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,427 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,427 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,427 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,428 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,428 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,428 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,430 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,430 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,431 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,431 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,431 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,431 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,431 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,432 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,432 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,432 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,432 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,432 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,432 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,432 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,433 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,433 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,433 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,433 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,434 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,434 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,434 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,435 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,435 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,435 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,436 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,437 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,437 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,437 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,438 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,438 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,438 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,439 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,440 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,440 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,440 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,440 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,441 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,442 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,442 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,442 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,442 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,443 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,444 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,444 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,444 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,444 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,444 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,445 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,445 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,445 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,446 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,446 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,446 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,447 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,447 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,447 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,448 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,448 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,448 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,450 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 11:23:19,450 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-16 11:23:19,451 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 11:23:19,451 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 11:23:19,451 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 11:23:19,451 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 11:23:19,451 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 11:23:19,451 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 11:23:19,451 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 11:23:19,451 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 11:23:19,454 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 11:23:19,454 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 97 places, 87 transitions, 216 flow [2020-10-16 11:23:19,454 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 97 places, 87 transitions, 216 flow [2020-10-16 11:23:19,454 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 97 places, 87 transitions, 216 flow [2020-10-16 11:23:19,473 INFO L129 PetriNetUnfolder]: 5/105 cut-off events. [2020-10-16 11:23:19,473 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-10-16 11:23:19,475 INFO L80 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 105 events. 5/105 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 187 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 119. Up to 8 conditions per place. [2020-10-16 11:23:19,478 INFO L117 LiptonReduction]: Number of co-enabled transitions 1608 [2020-10-16 11:23:20,941 INFO L132 LiptonReduction]: Checked pairs total: 2157 [2020-10-16 11:23:20,942 INFO L134 LiptonReduction]: Total number of compositions: 77 [2020-10-16 11:23:20,942 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 27 transitions, 96 flow [2020-10-16 11:23:20,969 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 683 states. [2020-10-16 11:23:20,970 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states. [2020-10-16 11:23:20,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-16 11:23:20,970 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:20,970 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-16 11:23:20,971 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:23:20,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:20,971 INFO L82 PathProgramCache]: Analyzing trace with hash 535749, now seen corresponding path program 1 times [2020-10-16 11:23:20,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:20,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491301528] [2020-10-16 11:23:20,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:20,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:20,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:20,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491301528] [2020-10-16 11:23:20,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:20,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 11:23:20,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025017128] [2020-10-16 11:23:20,998 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:23:20,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:20,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:23:20,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:23:20,999 INFO L87 Difference]: Start difference. First operand 683 states. Second operand 3 states. [2020-10-16 11:23:21,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:21,023 INFO L93 Difference]: Finished difference Result 600 states and 1886 transitions. [2020-10-16 11:23:21,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:23:21,023 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-16 11:23:21,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:21,030 INFO L225 Difference]: With dead ends: 600 [2020-10-16 11:23:21,030 INFO L226 Difference]: Without dead ends: 559 [2020-10-16 11:23:21,030 INFO L677 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 [2020-10-16 11:23:21,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2020-10-16 11:23:21,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 559. [2020-10-16 11:23:21,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 559 states. [2020-10-16 11:23:21,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 1737 transitions. [2020-10-16 11:23:21,072 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 1737 transitions. Word has length 3 [2020-10-16 11:23:21,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:21,072 INFO L481 AbstractCegarLoop]: Abstraction has 559 states and 1737 transitions. [2020-10-16 11:23:21,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:23:21,073 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 1737 transitions. [2020-10-16 11:23:21,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 11:23:21,073 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:21,074 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:21,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 11:23:21,074 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:23:21,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:21,074 INFO L82 PathProgramCache]: Analyzing trace with hash -404806880, now seen corresponding path program 1 times [2020-10-16 11:23:21,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:21,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861693858] [2020-10-16 11:23:21,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:21,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:21,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:21,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861693858] [2020-10-16 11:23:21,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:21,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:23:21,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403404234] [2020-10-16 11:23:21,119 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:23:21,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:21,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:23:21,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:23:21,120 INFO L87 Difference]: Start difference. First operand 559 states and 1737 transitions. Second operand 5 states. [2020-10-16 11:23:21,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:21,209 INFO L93 Difference]: Finished difference Result 817 states and 2317 transitions. [2020-10-16 11:23:21,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 11:23:21,209 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-16 11:23:21,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:21,216 INFO L225 Difference]: With dead ends: 817 [2020-10-16 11:23:21,216 INFO L226 Difference]: Without dead ends: 812 [2020-10-16 11:23:21,217 INFO L677 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 [2020-10-16 11:23:21,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2020-10-16 11:23:21,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 585. [2020-10-16 11:23:21,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 585 states. [2020-10-16 11:23:21,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 1832 transitions. [2020-10-16 11:23:21,246 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 1832 transitions. Word has length 9 [2020-10-16 11:23:21,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:21,246 INFO L481 AbstractCegarLoop]: Abstraction has 585 states and 1832 transitions. [2020-10-16 11:23:21,246 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:23:21,246 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 1832 transitions. [2020-10-16 11:23:21,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 11:23:21,247 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:21,248 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:21,248 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 11:23:21,248 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:23:21,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:21,249 INFO L82 PathProgramCache]: Analyzing trace with hash -669323978, now seen corresponding path program 1 times [2020-10-16 11:23:21,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:21,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736861719] [2020-10-16 11:23:21,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:21,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:21,283 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 11:23:21,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736861719] [2020-10-16 11:23:21,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:21,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:23:21,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137603185] [2020-10-16 11:23:21,285 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:23:21,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:21,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:23:21,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:23:21,286 INFO L87 Difference]: Start difference. First operand 585 states and 1832 transitions. Second operand 5 states. [2020-10-16 11:23:21,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:21,357 INFO L93 Difference]: Finished difference Result 843 states and 2406 transitions. [2020-10-16 11:23:21,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 11:23:21,358 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-16 11:23:21,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:21,364 INFO L225 Difference]: With dead ends: 843 [2020-10-16 11:23:21,364 INFO L226 Difference]: Without dead ends: 836 [2020-10-16 11:23:21,365 INFO L677 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 [2020-10-16 11:23:21,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2020-10-16 11:23:21,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 611. [2020-10-16 11:23:21,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2020-10-16 11:23:21,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 1906 transitions. [2020-10-16 11:23:21,390 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 1906 transitions. Word has length 13 [2020-10-16 11:23:21,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:21,390 INFO L481 AbstractCegarLoop]: Abstraction has 611 states and 1906 transitions. [2020-10-16 11:23:21,390 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:23:21,391 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 1906 transitions. [2020-10-16 11:23:21,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 11:23:21,392 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:21,392 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:21,392 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-16 11:23:21,393 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:23:21,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:21,393 INFO L82 PathProgramCache]: Analyzing trace with hash -56737855, now seen corresponding path program 1 times [2020-10-16 11:23:21,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:21,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152938977] [2020-10-16 11:23:21,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:21,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:21,464 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:21,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152938977] [2020-10-16 11:23:21,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400350812] [2020-10-16 11:23:21,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:23:21,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:21,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 11:23:21,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:23:21,568 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:21,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:23:21,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-16 11:23:21,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292871091] [2020-10-16 11:23:21,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 11:23:21,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:21,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 11:23:21,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:23:21,571 INFO L87 Difference]: Start difference. First operand 611 states and 1906 transitions. Second operand 9 states. [2020-10-16 11:23:21,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:21,736 INFO L93 Difference]: Finished difference Result 1059 states and 2818 transitions. [2020-10-16 11:23:21,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:23:21,736 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-10-16 11:23:21,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:21,745 INFO L225 Difference]: With dead ends: 1059 [2020-10-16 11:23:21,745 INFO L226 Difference]: Without dead ends: 1052 [2020-10-16 11:23:21,746 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-10-16 11:23:21,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2020-10-16 11:23:21,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 591. [2020-10-16 11:23:21,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states. [2020-10-16 11:23:21,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 1840 transitions. [2020-10-16 11:23:21,777 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 1840 transitions. Word has length 15 [2020-10-16 11:23:21,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:21,777 INFO L481 AbstractCegarLoop]: Abstraction has 591 states and 1840 transitions. [2020-10-16 11:23:21,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 11:23:21,777 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 1840 transitions. [2020-10-16 11:23:21,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 11:23:21,778 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:21,778 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:21,991 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-10-16 11:23:21,992 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:23:21,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:21,992 INFO L82 PathProgramCache]: Analyzing trace with hash 1024744543, now seen corresponding path program 2 times [2020-10-16 11:23:21,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:21,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118591176] [2020-10-16 11:23:21,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:22,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:22,041 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 11:23:22,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118591176] [2020-10-16 11:23:22,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:22,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 11:23:22,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446817819] [2020-10-16 11:23:22,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 11:23:22,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:22,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 11:23:22,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:23:22,044 INFO L87 Difference]: Start difference. First operand 591 states and 1840 transitions. Second operand 7 states. [2020-10-16 11:23:22,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:22,197 INFO L93 Difference]: Finished difference Result 1053 states and 2807 transitions. [2020-10-16 11:23:22,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:23:22,197 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-16 11:23:22,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:22,204 INFO L225 Difference]: With dead ends: 1053 [2020-10-16 11:23:22,204 INFO L226 Difference]: Without dead ends: 1045 [2020-10-16 11:23:22,205 INFO L677 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 [2020-10-16 11:23:22,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2020-10-16 11:23:22,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 536. [2020-10-16 11:23:22,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 536 states. [2020-10-16 11:23:22,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 1688 transitions. [2020-10-16 11:23:22,227 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 1688 transitions. Word has length 15 [2020-10-16 11:23:22,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:22,228 INFO L481 AbstractCegarLoop]: Abstraction has 536 states and 1688 transitions. [2020-10-16 11:23:22,228 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 11:23:22,228 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 1688 transitions. [2020-10-16 11:23:22,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 11:23:22,229 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:22,229 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:22,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-16 11:23:22,230 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:23:22,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:22,230 INFO L82 PathProgramCache]: Analyzing trace with hash 68174732, now seen corresponding path program 1 times [2020-10-16 11:23:22,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:22,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665295636] [2020-10-16 11:23:22,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:22,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:22,264 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 11:23:22,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665295636] [2020-10-16 11:23:22,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:22,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:23:22,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586276583] [2020-10-16 11:23:22,266 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:23:22,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:22,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:23:22,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:23:22,266 INFO L87 Difference]: Start difference. First operand 536 states and 1688 transitions. Second operand 5 states. [2020-10-16 11:23:22,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:22,322 INFO L93 Difference]: Finished difference Result 736 states and 2123 transitions. [2020-10-16 11:23:22,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 11:23:22,322 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-16 11:23:22,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:22,328 INFO L225 Difference]: With dead ends: 736 [2020-10-16 11:23:22,328 INFO L226 Difference]: Without dead ends: 728 [2020-10-16 11:23:22,328 INFO L677 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 [2020-10-16 11:23:22,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2020-10-16 11:23:22,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 549. [2020-10-16 11:23:22,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 549 states. [2020-10-16 11:23:22,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 1684 transitions. [2020-10-16 11:23:22,349 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 1684 transitions. Word has length 17 [2020-10-16 11:23:22,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:22,349 INFO L481 AbstractCegarLoop]: Abstraction has 549 states and 1684 transitions. [2020-10-16 11:23:22,349 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:23:22,349 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 1684 transitions. [2020-10-16 11:23:22,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-16 11:23:22,350 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:22,350 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:22,351 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-16 11:23:22,351 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:23:22,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:22,351 INFO L82 PathProgramCache]: Analyzing trace with hash 2109628021, now seen corresponding path program 1 times [2020-10-16 11:23:22,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:22,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165450650] [2020-10-16 11:23:22,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:22,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 11:23:22,362 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 11:23:22,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 11:23:22,371 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 11:23:22,378 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 11:23:22,378 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 11:23:22,379 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-16 11:23:22,379 WARN L371 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 11:23:22,380 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-10-16 11:23:22,391 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,391 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,391 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,392 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,392 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,392 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,392 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,392 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,392 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,393 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,393 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,393 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,393 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,393 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,393 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,394 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,394 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,394 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,394 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,394 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,394 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,395 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,395 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,395 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,395 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,395 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,395 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,396 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,396 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,396 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,396 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,396 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,396 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,396 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,397 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,397 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,397 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,397 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,397 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,397 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,398 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,398 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,398 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,398 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,398 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,398 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,399 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,399 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,399 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,399 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,399 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,399 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,399 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,400 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,400 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,400 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,400 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,400 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,400 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,401 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,401 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,401 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,401 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,401 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,401 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,402 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,402 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,402 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,402 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,402 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,402 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,402 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,403 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,403 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,403 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,403 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,403 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,403 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,404 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,404 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,404 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,404 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,404 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,404 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,405 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,405 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,405 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,405 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,405 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,408 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,408 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,408 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,409 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,409 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,410 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,411 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,411 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,411 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,411 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,413 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,413 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,413 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,413 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,414 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,415 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,415 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,415 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,416 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,416 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,416 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,417 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,417 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,418 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,418 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,418 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,418 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,419 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,419 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,420 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,420 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,420 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,420 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,421 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,421 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,422 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,422 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,422 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,422 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,423 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 11:23:22,423 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-16 11:23:22,424 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 11:23:22,424 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 11:23:22,424 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 11:23:22,424 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 11:23:22,424 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 11:23:22,424 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 11:23:22,424 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 11:23:22,425 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 11:23:22,426 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 11:23:22,426 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 118 places, 105 transitions, 274 flow [2020-10-16 11:23:22,427 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 118 places, 105 transitions, 274 flow [2020-10-16 11:23:22,427 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 118 places, 105 transitions, 274 flow [2020-10-16 11:23:22,448 INFO L129 PetriNetUnfolder]: 6/127 cut-off events. [2020-10-16 11:23:22,448 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-10-16 11:23:22,450 INFO L80 FinitePrefix]: Finished finitePrefix Result has 156 conditions, 127 events. 6/127 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 211 event pairs, 0 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 147. Up to 10 conditions per place. [2020-10-16 11:23:22,455 INFO L117 LiptonReduction]: Number of co-enabled transitions 2192 [2020-10-16 11:23:24,114 INFO L132 LiptonReduction]: Checked pairs total: 2978 [2020-10-16 11:23:24,114 INFO L134 LiptonReduction]: Total number of compositions: 97 [2020-10-16 11:23:24,115 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 51 places, 33 transitions, 130 flow [2020-10-16 11:23:24,227 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 2060 states. [2020-10-16 11:23:24,227 INFO L276 IsEmpty]: Start isEmpty. Operand 2060 states. [2020-10-16 11:23:24,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-16 11:23:24,228 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:24,228 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-16 11:23:24,228 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]=== [2020-10-16 11:23:24,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:24,229 INFO L82 PathProgramCache]: Analyzing trace with hash 753552, now seen corresponding path program 1 times [2020-10-16 11:23:24,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:24,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141164718] [2020-10-16 11:23:24,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:24,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:24,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:24,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141164718] [2020-10-16 11:23:24,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:24,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 11:23:24,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660029936] [2020-10-16 11:23:24,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:23:24,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:24,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:23:24,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:23:24,245 INFO L87 Difference]: Start difference. First operand 2060 states. Second operand 3 states. [2020-10-16 11:23:24,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:24,278 INFO L93 Difference]: Finished difference Result 1889 states and 7217 transitions. [2020-10-16 11:23:24,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:23:24,278 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-16 11:23:24,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:24,294 INFO L225 Difference]: With dead ends: 1889 [2020-10-16 11:23:24,294 INFO L226 Difference]: Without dead ends: 1767 [2020-10-16 11:23:24,295 INFO L677 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 [2020-10-16 11:23:24,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2020-10-16 11:23:24,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1767. [2020-10-16 11:23:24,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1767 states. [2020-10-16 11:23:24,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1767 states to 1767 states and 6690 transitions. [2020-10-16 11:23:24,377 INFO L78 Accepts]: Start accepts. Automaton has 1767 states and 6690 transitions. Word has length 3 [2020-10-16 11:23:24,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:24,377 INFO L481 AbstractCegarLoop]: Abstraction has 1767 states and 6690 transitions. [2020-10-16 11:23:24,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:23:24,378 INFO L276 IsEmpty]: Start isEmpty. Operand 1767 states and 6690 transitions. [2020-10-16 11:23:24,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 11:23:24,378 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:24,378 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:24,378 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-16 11:23:24,379 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]=== [2020-10-16 11:23:24,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:24,379 INFO L82 PathProgramCache]: Analyzing trace with hash -260829075, now seen corresponding path program 1 times [2020-10-16 11:23:24,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:24,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240798648] [2020-10-16 11:23:24,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:24,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:24,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:24,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240798648] [2020-10-16 11:23:24,409 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:24,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:23:24,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419171197] [2020-10-16 11:23:24,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:23:24,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:24,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:23:24,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:23:24,410 INFO L87 Difference]: Start difference. First operand 1767 states and 6690 transitions. Second operand 5 states. [2020-10-16 11:23:24,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:24,489 INFO L93 Difference]: Finished difference Result 2905 states and 10138 transitions. [2020-10-16 11:23:24,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 11:23:24,490 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-16 11:23:24,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:24,516 INFO L225 Difference]: With dead ends: 2905 [2020-10-16 11:23:24,516 INFO L226 Difference]: Without dead ends: 2899 [2020-10-16 11:23:24,516 INFO L677 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 [2020-10-16 11:23:24,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2899 states. [2020-10-16 11:23:24,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2899 to 1966. [2020-10-16 11:23:24,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1966 states. [2020-10-16 11:23:24,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1966 states to 1966 states and 7503 transitions. [2020-10-16 11:23:24,619 INFO L78 Accepts]: Start accepts. Automaton has 1966 states and 7503 transitions. Word has length 9 [2020-10-16 11:23:24,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:24,619 INFO L481 AbstractCegarLoop]: Abstraction has 1966 states and 7503 transitions. [2020-10-16 11:23:24,619 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:23:24,620 INFO L276 IsEmpty]: Start isEmpty. Operand 1966 states and 7503 transitions. [2020-10-16 11:23:24,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 11:23:24,620 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:24,620 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:24,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-16 11:23:24,621 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]=== [2020-10-16 11:23:24,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:24,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1408743431, now seen corresponding path program 1 times [2020-10-16 11:23:24,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:24,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999743943] [2020-10-16 11:23:24,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:24,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:24,656 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 11:23:24,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999743943] [2020-10-16 11:23:24,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:24,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:23:24,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346256471] [2020-10-16 11:23:24,657 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:23:24,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:24,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:23:24,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:23:24,658 INFO L87 Difference]: Start difference. First operand 1966 states and 7503 transitions. Second operand 5 states. [2020-10-16 11:23:24,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:24,781 INFO L93 Difference]: Finished difference Result 3204 states and 11312 transitions. [2020-10-16 11:23:24,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 11:23:24,781 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-16 11:23:24,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:24,807 INFO L225 Difference]: With dead ends: 3204 [2020-10-16 11:23:24,807 INFO L226 Difference]: Without dead ends: 3194 [2020-10-16 11:23:24,807 INFO L677 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 [2020-10-16 11:23:24,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3194 states. [2020-10-16 11:23:24,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3194 to 2200. [2020-10-16 11:23:24,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2200 states. [2020-10-16 11:23:24,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2200 states to 2200 states and 8453 transitions. [2020-10-16 11:23:24,908 INFO L78 Accepts]: Start accepts. Automaton has 2200 states and 8453 transitions. Word has length 13 [2020-10-16 11:23:24,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:24,908 INFO L481 AbstractCegarLoop]: Abstraction has 2200 states and 8453 transitions. [2020-10-16 11:23:24,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:23:24,909 INFO L276 IsEmpty]: Start isEmpty. Operand 2200 states and 8453 transitions. [2020-10-16 11:23:24,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 11:23:24,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:24,910 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:24,910 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-16 11:23:24,910 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]=== [2020-10-16 11:23:24,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:24,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1555768808, now seen corresponding path program 1 times [2020-10-16 11:23:24,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:24,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866840993] [2020-10-16 11:23:24,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:24,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:24,956 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:24,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866840993] [2020-10-16 11:23:24,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309031693] [2020-10-16 11:23:24,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:23:25,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:25,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 11:23:25,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:23:25,043 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:25,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:23:25,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-16 11:23:25,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704240221] [2020-10-16 11:23:25,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 11:23:25,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:25,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 11:23:25,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:23:25,045 INFO L87 Difference]: Start difference. First operand 2200 states and 8453 transitions. Second operand 9 states. [2020-10-16 11:23:25,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:25,254 INFO L93 Difference]: Finished difference Result 4556 states and 14911 transitions. [2020-10-16 11:23:25,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:23:25,254 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-10-16 11:23:25,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:25,278 INFO L225 Difference]: With dead ends: 4556 [2020-10-16 11:23:25,279 INFO L226 Difference]: Without dead ends: 4546 [2020-10-16 11:23:25,279 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-10-16 11:23:25,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4546 states. [2020-10-16 11:23:25,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4546 to 2157. [2020-10-16 11:23:25,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2157 states. [2020-10-16 11:23:25,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2157 states to 2157 states and 8278 transitions. [2020-10-16 11:23:25,396 INFO L78 Accepts]: Start accepts. Automaton has 2157 states and 8278 transitions. Word has length 15 [2020-10-16 11:23:25,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:25,396 INFO L481 AbstractCegarLoop]: Abstraction has 2157 states and 8278 transitions. [2020-10-16 11:23:25,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 11:23:25,396 INFO L276 IsEmpty]: Start isEmpty. Operand 2157 states and 8278 transitions. [2020-10-16 11:23:25,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 11:23:25,397 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:25,397 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:25,613 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-16 11:23:25,614 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]=== [2020-10-16 11:23:25,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:25,614 INFO L82 PathProgramCache]: Analyzing trace with hash -887756896, now seen corresponding path program 2 times [2020-10-16 11:23:25,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:25,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961745204] [2020-10-16 11:23:25,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:25,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:25,657 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 11:23:25,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961745204] [2020-10-16 11:23:25,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:25,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 11:23:25,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144320839] [2020-10-16 11:23:25,658 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 11:23:25,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:25,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 11:23:25,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:23:25,659 INFO L87 Difference]: Start difference. First operand 2157 states and 8278 transitions. Second operand 7 states. [2020-10-16 11:23:25,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:25,914 INFO L93 Difference]: Finished difference Result 4612 states and 15111 transitions. [2020-10-16 11:23:25,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:23:25,914 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-16 11:23:25,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:25,931 INFO L225 Difference]: With dead ends: 4612 [2020-10-16 11:23:25,931 INFO L226 Difference]: Without dead ends: 4601 [2020-10-16 11:23:25,932 INFO L677 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 [2020-10-16 11:23:25,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4601 states. [2020-10-16 11:23:26,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4601 to 2035. [2020-10-16 11:23:26,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2035 states. [2020-10-16 11:23:26,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2035 states to 2035 states and 7845 transitions. [2020-10-16 11:23:26,045 INFO L78 Accepts]: Start accepts. Automaton has 2035 states and 7845 transitions. Word has length 15 [2020-10-16 11:23:26,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:26,045 INFO L481 AbstractCegarLoop]: Abstraction has 2035 states and 7845 transitions. [2020-10-16 11:23:26,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 11:23:26,045 INFO L276 IsEmpty]: Start isEmpty. Operand 2035 states and 7845 transitions. [2020-10-16 11:23:26,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 11:23:26,046 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:26,047 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:26,047 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-16 11:23:26,047 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]=== [2020-10-16 11:23:26,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:26,047 INFO L82 PathProgramCache]: Analyzing trace with hash 695111130, now seen corresponding path program 1 times [2020-10-16 11:23:26,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:26,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606942266] [2020-10-16 11:23:26,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:26,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:26,083 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 11:23:26,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606942266] [2020-10-16 11:23:26,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:26,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:23:26,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637633886] [2020-10-16 11:23:26,084 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:23:26,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:26,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:23:26,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:23:26,085 INFO L87 Difference]: Start difference. First operand 2035 states and 7845 transitions. Second operand 5 states. [2020-10-16 11:23:26,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:26,163 INFO L93 Difference]: Finished difference Result 3265 states and 11681 transitions. [2020-10-16 11:23:26,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 11:23:26,163 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-16 11:23:26,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:26,176 INFO L225 Difference]: With dead ends: 3265 [2020-10-16 11:23:26,176 INFO L226 Difference]: Without dead ends: 3250 [2020-10-16 11:23:26,176 INFO L677 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 [2020-10-16 11:23:26,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3250 states. [2020-10-16 11:23:26,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3250 to 2281. [2020-10-16 11:23:26,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2281 states. [2020-10-16 11:23:26,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2281 states to 2281 states and 8755 transitions. [2020-10-16 11:23:26,268 INFO L78 Accepts]: Start accepts. Automaton has 2281 states and 8755 transitions. Word has length 17 [2020-10-16 11:23:26,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:26,268 INFO L481 AbstractCegarLoop]: Abstraction has 2281 states and 8755 transitions. [2020-10-16 11:23:26,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:23:26,269 INFO L276 IsEmpty]: Start isEmpty. Operand 2281 states and 8755 transitions. [2020-10-16 11:23:26,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 11:23:26,270 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:26,270 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:26,270 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-16 11:23:26,270 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]=== [2020-10-16 11:23:26,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:26,271 INFO L82 PathProgramCache]: Analyzing trace with hash 1754455113, now seen corresponding path program 1 times [2020-10-16 11:23:26,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:26,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120630568] [2020-10-16 11:23:26,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:26,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:26,313 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 11:23:26,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120630568] [2020-10-16 11:23:26,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019441440] [2020-10-16 11:23:26,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:23:26,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:26,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 11:23:26,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:23:26,402 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 11:23:26,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:23:26,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-16 11:23:26,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292079999] [2020-10-16 11:23:26,404 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 11:23:26,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:26,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 11:23:26,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:23:26,405 INFO L87 Difference]: Start difference. First operand 2281 states and 8755 transitions. Second operand 9 states. [2020-10-16 11:23:26,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:26,644 INFO L93 Difference]: Finished difference Result 4825 states and 15986 transitions. [2020-10-16 11:23:26,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:23:26,644 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2020-10-16 11:23:26,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:26,658 INFO L225 Difference]: With dead ends: 4825 [2020-10-16 11:23:26,658 INFO L226 Difference]: Without dead ends: 4813 [2020-10-16 11:23:26,659 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-10-16 11:23:26,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4813 states. [2020-10-16 11:23:26,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4813 to 2305. [2020-10-16 11:23:26,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2305 states. [2020-10-16 11:23:26,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2305 states to 2305 states and 8815 transitions. [2020-10-16 11:23:26,866 INFO L78 Accepts]: Start accepts. Automaton has 2305 states and 8815 transitions. Word has length 19 [2020-10-16 11:23:26,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:26,866 INFO L481 AbstractCegarLoop]: Abstraction has 2305 states and 8815 transitions. [2020-10-16 11:23:26,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 11:23:26,866 INFO L276 IsEmpty]: Start isEmpty. Operand 2305 states and 8815 transitions. [2020-10-16 11:23:26,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 11:23:26,868 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:26,868 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:27,078 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:23:27,079 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]=== [2020-10-16 11:23:27,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:27,079 INFO L82 PathProgramCache]: Analyzing trace with hash -131464925, now seen corresponding path program 1 times [2020-10-16 11:23:27,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:27,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155727002] [2020-10-16 11:23:27,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:27,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:27,122 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 11:23:27,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155727002] [2020-10-16 11:23:27,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510725422] [2020-10-16 11:23:27,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:23:27,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:27,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 11:23:27,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:23:27,258 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 11:23:27,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:23:27,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-16 11:23:27,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984972526] [2020-10-16 11:23:27,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 11:23:27,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:27,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 11:23:27,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:23:27,261 INFO L87 Difference]: Start difference. First operand 2305 states and 8815 transitions. Second operand 9 states. [2020-10-16 11:23:27,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:27,513 INFO L93 Difference]: Finished difference Result 4942 states and 16410 transitions. [2020-10-16 11:23:27,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:23:27,514 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2020-10-16 11:23:27,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:27,526 INFO L225 Difference]: With dead ends: 4942 [2020-10-16 11:23:27,526 INFO L226 Difference]: Without dead ends: 4925 [2020-10-16 11:23:27,527 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-10-16 11:23:27,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4925 states. [2020-10-16 11:23:27,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4925 to 2299. [2020-10-16 11:23:27,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2299 states. [2020-10-16 11:23:27,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2299 states to 2299 states and 8782 transitions. [2020-10-16 11:23:27,637 INFO L78 Accepts]: Start accepts. Automaton has 2299 states and 8782 transitions. Word has length 19 [2020-10-16 11:23:27,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:27,637 INFO L481 AbstractCegarLoop]: Abstraction has 2299 states and 8782 transitions. [2020-10-16 11:23:27,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 11:23:27,637 INFO L276 IsEmpty]: Start isEmpty. Operand 2299 states and 8782 transitions. [2020-10-16 11:23:27,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 11:23:27,639 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:27,639 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:27,852 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:23:27,853 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]=== [2020-10-16 11:23:27,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:27,853 INFO L82 PathProgramCache]: Analyzing trace with hash -2013120191, now seen corresponding path program 2 times [2020-10-16 11:23:27,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:27,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63663296] [2020-10-16 11:23:27,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:27,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:27,896 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 11:23:27,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63663296] [2020-10-16 11:23:27,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:27,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 11:23:27,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160271184] [2020-10-16 11:23:27,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 11:23:27,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:27,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 11:23:27,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:23:27,898 INFO L87 Difference]: Start difference. First operand 2299 states and 8782 transitions. Second operand 7 states. [2020-10-16 11:23:28,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:28,113 INFO L93 Difference]: Finished difference Result 4934 states and 16393 transitions. [2020-10-16 11:23:28,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:23:28,114 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-16 11:23:28,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:28,126 INFO L225 Difference]: With dead ends: 4934 [2020-10-16 11:23:28,126 INFO L226 Difference]: Without dead ends: 4917 [2020-10-16 11:23:28,127 INFO L677 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 [2020-10-16 11:23:28,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4917 states. [2020-10-16 11:23:28,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4917 to 2216. [2020-10-16 11:23:28,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2216 states. [2020-10-16 11:23:28,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2216 states to 2216 states and 8477 transitions. [2020-10-16 11:23:28,228 INFO L78 Accepts]: Start accepts. Automaton has 2216 states and 8477 transitions. Word has length 19 [2020-10-16 11:23:28,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:28,228 INFO L481 AbstractCegarLoop]: Abstraction has 2216 states and 8477 transitions. [2020-10-16 11:23:28,228 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 11:23:28,229 INFO L276 IsEmpty]: Start isEmpty. Operand 2216 states and 8477 transitions. [2020-10-16 11:23:28,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 11:23:28,230 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:28,230 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:28,230 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-16 11:23:28,230 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]=== [2020-10-16 11:23:28,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:28,231 INFO L82 PathProgramCache]: Analyzing trace with hash -2013113743, now seen corresponding path program 2 times [2020-10-16 11:23:28,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:28,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360447530] [2020-10-16 11:23:28,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:28,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:28,278 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 11:23:28,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360447530] [2020-10-16 11:23:28,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:28,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 11:23:28,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113533876] [2020-10-16 11:23:28,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 11:23:28,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:28,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 11:23:28,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:23:28,280 INFO L87 Difference]: Start difference. First operand 2216 states and 8477 transitions. Second operand 7 states. [2020-10-16 11:23:28,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:28,573 INFO L93 Difference]: Finished difference Result 4774 states and 15828 transitions. [2020-10-16 11:23:28,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:23:28,574 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-16 11:23:28,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:28,585 INFO L225 Difference]: With dead ends: 4774 [2020-10-16 11:23:28,585 INFO L226 Difference]: Without dead ends: 4757 [2020-10-16 11:23:28,586 INFO L677 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 [2020-10-16 11:23:28,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4757 states. [2020-10-16 11:23:28,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4757 to 2150. [2020-10-16 11:23:28,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2150 states. [2020-10-16 11:23:28,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 8243 transitions. [2020-10-16 11:23:28,673 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 8243 transitions. Word has length 19 [2020-10-16 11:23:28,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:28,674 INFO L481 AbstractCegarLoop]: Abstraction has 2150 states and 8243 transitions. [2020-10-16 11:23:28,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 11:23:28,674 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 8243 transitions. [2020-10-16 11:23:28,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:23:28,675 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:28,676 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:28,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-16 11:23:28,676 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]=== [2020-10-16 11:23:28,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:28,676 INFO L82 PathProgramCache]: Analyzing trace with hash -9146414, now seen corresponding path program 1 times [2020-10-16 11:23:28,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:28,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145946731] [2020-10-16 11:23:28,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:28,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:28,732 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:28,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145946731] [2020-10-16 11:23:28,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709302223] [2020-10-16 11:23:28,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:23:28,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:28,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 11:23:28,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:23:28,824 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:28,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:23:28,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 11:23:28,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41796454] [2020-10-16 11:23:28,825 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 11:23:28,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:28,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 11:23:28,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-16 11:23:28,826 INFO L87 Difference]: Start difference. First operand 2150 states and 8243 transitions. Second operand 11 states. [2020-10-16 11:23:29,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:29,365 INFO L93 Difference]: Finished difference Result 6025 states and 18746 transitions. [2020-10-16 11:23:29,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:23:29,365 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-10-16 11:23:29,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:29,375 INFO L225 Difference]: With dead ends: 6025 [2020-10-16 11:23:29,375 INFO L226 Difference]: Without dead ends: 6017 [2020-10-16 11:23:29,376 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 11:23:29,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6017 states. [2020-10-16 11:23:29,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6017 to 2117. [2020-10-16 11:23:29,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2117 states. [2020-10-16 11:23:29,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2117 states to 2117 states and 8106 transitions. [2020-10-16 11:23:29,467 INFO L78 Accepts]: Start accepts. Automaton has 2117 states and 8106 transitions. Word has length 21 [2020-10-16 11:23:29,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:29,468 INFO L481 AbstractCegarLoop]: Abstraction has 2117 states and 8106 transitions. [2020-10-16 11:23:29,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 11:23:29,468 INFO L276 IsEmpty]: Start isEmpty. Operand 2117 states and 8106 transitions. [2020-10-16 11:23:29,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:23:29,470 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:29,470 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:29,684 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-10-16 11:23:29,685 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]=== [2020-10-16 11:23:29,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:29,686 INFO L82 PathProgramCache]: Analyzing trace with hash -1890795232, now seen corresponding path program 2 times [2020-10-16 11:23:29,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:29,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731031935] [2020-10-16 11:23:29,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:29,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:29,747 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 11:23:29,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731031935] [2020-10-16 11:23:29,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139328987] [2020-10-16 11:23:29,748 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:23:29,836 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 11:23:29,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:23:29,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 11:23:29,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:23:29,930 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 11:23:29,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:23:29,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 11:23:29,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559418692] [2020-10-16 11:23:29,931 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 11:23:29,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:29,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 11:23:29,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-16 11:23:29,932 INFO L87 Difference]: Start difference. First operand 2117 states and 8106 transitions. Second operand 11 states. [2020-10-16 11:23:30,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:30,521 INFO L93 Difference]: Finished difference Result 5914 states and 18384 transitions. [2020-10-16 11:23:30,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:23:30,521 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-10-16 11:23:30,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:30,530 INFO L225 Difference]: With dead ends: 5914 [2020-10-16 11:23:30,530 INFO L226 Difference]: Without dead ends: 5903 [2020-10-16 11:23:30,531 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 11:23:30,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5903 states. [2020-10-16 11:23:30,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5903 to 2085. [2020-10-16 11:23:30,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2085 states. [2020-10-16 11:23:30,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2085 states to 2085 states and 7975 transitions. [2020-10-16 11:23:30,618 INFO L78 Accepts]: Start accepts. Automaton has 2085 states and 7975 transitions. Word has length 21 [2020-10-16 11:23:30,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:30,618 INFO L481 AbstractCegarLoop]: Abstraction has 2085 states and 7975 transitions. [2020-10-16 11:23:30,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 11:23:30,618 INFO L276 IsEmpty]: Start isEmpty. Operand 2085 states and 7975 transitions. [2020-10-16 11:23:30,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:23:30,620 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:30,620 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:30,835 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:23:30,836 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]=== [2020-10-16 11:23:30,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:30,837 INFO L82 PathProgramCache]: Analyzing trace with hash 180724060, now seen corresponding path program 3 times [2020-10-16 11:23:30,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:30,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123601648] [2020-10-16 11:23:30,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:30,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:30,891 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 11:23:30,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123601648] [2020-10-16 11:23:30,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698560034] [2020-10-16 11:23:30,891 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:23:30,966 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 11:23:30,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:23:30,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 11:23:30,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:23:30,995 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 11:23:30,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:23:30,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 11:23:30,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747593146] [2020-10-16 11:23:30,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 11:23:30,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:30,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 11:23:30,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-16 11:23:30,997 INFO L87 Difference]: Start difference. First operand 2085 states and 7975 transitions. Second operand 11 states. [2020-10-16 11:23:31,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:31,520 INFO L93 Difference]: Finished difference Result 5907 states and 18375 transitions. [2020-10-16 11:23:31,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:23:31,521 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-10-16 11:23:31,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:31,536 INFO L225 Difference]: With dead ends: 5907 [2020-10-16 11:23:31,536 INFO L226 Difference]: Without dead ends: 5899 [2020-10-16 11:23:31,537 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 11:23:31,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5899 states. [2020-10-16 11:23:31,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5899 to 2008. [2020-10-16 11:23:31,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2008 states. [2020-10-16 11:23:31,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2008 states to 2008 states and 7698 transitions. [2020-10-16 11:23:31,697 INFO L78 Accepts]: Start accepts. Automaton has 2008 states and 7698 transitions. Word has length 21 [2020-10-16 11:23:31,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:31,697 INFO L481 AbstractCegarLoop]: Abstraction has 2008 states and 7698 transitions. [2020-10-16 11:23:31,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 11:23:31,697 INFO L276 IsEmpty]: Start isEmpty. Operand 2008 states and 7698 transitions. [2020-10-16 11:23:31,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:23:31,699 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:31,699 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:31,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-10-16 11:23:31,915 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]=== [2020-10-16 11:23:31,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:31,916 INFO L82 PathProgramCache]: Analyzing trace with hash -1783759286, now seen corresponding path program 4 times [2020-10-16 11:23:31,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:31,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405857129] [2020-10-16 11:23:31,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:31,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:31,989 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 11:23:31,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405857129] [2020-10-16 11:23:31,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891902886] [2020-10-16 11:23:31,990 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:23:32,065 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 11:23:32,065 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:23:32,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 11:23:32,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:23:32,114 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 11:23:32,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:23:32,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 11:23:32,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916861808] [2020-10-16 11:23:32,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 11:23:32,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:32,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 11:23:32,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-16 11:23:32,116 INFO L87 Difference]: Start difference. First operand 2008 states and 7698 transitions. Second operand 11 states. [2020-10-16 11:23:32,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:32,607 INFO L93 Difference]: Finished difference Result 5835 states and 18155 transitions. [2020-10-16 11:23:32,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:23:32,607 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-10-16 11:23:32,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:32,617 INFO L225 Difference]: With dead ends: 5835 [2020-10-16 11:23:32,617 INFO L226 Difference]: Without dead ends: 5824 [2020-10-16 11:23:32,617 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 11:23:32,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5824 states. [2020-10-16 11:23:32,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5824 to 1976. [2020-10-16 11:23:32,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1976 states. [2020-10-16 11:23:32,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1976 states to 1976 states and 7567 transitions. [2020-10-16 11:23:32,705 INFO L78 Accepts]: Start accepts. Automaton has 1976 states and 7567 transitions. Word has length 21 [2020-10-16 11:23:32,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:32,706 INFO L481 AbstractCegarLoop]: Abstraction has 1976 states and 7567 transitions. [2020-10-16 11:23:32,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 11:23:32,706 INFO L276 IsEmpty]: Start isEmpty. Operand 1976 states and 7567 transitions. [2020-10-16 11:23:32,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:23:32,708 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:32,708 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:32,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-10-16 11:23:32,923 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]=== [2020-10-16 11:23:32,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:32,924 INFO L82 PathProgramCache]: Analyzing trace with hash -964809789, now seen corresponding path program 1 times [2020-10-16 11:23:32,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:32,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574590855] [2020-10-16 11:23:32,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:32,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:32,971 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 11:23:32,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574590855] [2020-10-16 11:23:32,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:32,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:23:32,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129848289] [2020-10-16 11:23:32,972 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:23:32,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:32,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:23:32,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:23:32,973 INFO L87 Difference]: Start difference. First operand 1976 states and 7567 transitions. Second operand 5 states. [2020-10-16 11:23:33,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:33,042 INFO L93 Difference]: Finished difference Result 3016 states and 10840 transitions. [2020-10-16 11:23:33,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 11:23:33,043 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-16 11:23:33,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:33,050 INFO L225 Difference]: With dead ends: 3016 [2020-10-16 11:23:33,050 INFO L226 Difference]: Without dead ends: 3000 [2020-10-16 11:23:33,050 INFO L677 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 [2020-10-16 11:23:33,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3000 states. [2020-10-16 11:23:33,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3000 to 2183. [2020-10-16 11:23:33,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2183 states. [2020-10-16 11:23:33,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2183 states to 2183 states and 8210 transitions. [2020-10-16 11:23:33,117 INFO L78 Accepts]: Start accepts. Automaton has 2183 states and 8210 transitions. Word has length 21 [2020-10-16 11:23:33,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:33,117 INFO L481 AbstractCegarLoop]: Abstraction has 2183 states and 8210 transitions. [2020-10-16 11:23:33,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:23:33,117 INFO L276 IsEmpty]: Start isEmpty. Operand 2183 states and 8210 transitions. [2020-10-16 11:23:33,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:23:33,119 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:33,119 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:33,119 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-16 11:23:33,119 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]=== [2020-10-16 11:23:33,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:33,120 INFO L82 PathProgramCache]: Analyzing trace with hash -1873231848, now seen corresponding path program 5 times [2020-10-16 11:23:33,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:33,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879044349] [2020-10-16 11:23:33,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:33,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:33,171 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 11:23:33,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879044349] [2020-10-16 11:23:33,172 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:33,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 11:23:33,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120413337] [2020-10-16 11:23:33,173 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 11:23:33,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:33,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 11:23:33,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:23:33,173 INFO L87 Difference]: Start difference. First operand 2183 states and 8210 transitions. Second operand 9 states. [2020-10-16 11:23:33,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:33,725 INFO L93 Difference]: Finished difference Result 6150 states and 19247 transitions. [2020-10-16 11:23:33,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:23:33,725 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-16 11:23:33,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:33,736 INFO L225 Difference]: With dead ends: 6150 [2020-10-16 11:23:33,736 INFO L226 Difference]: Without dead ends: 6139 [2020-10-16 11:23:33,737 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 11:23:33,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6139 states. [2020-10-16 11:23:33,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6139 to 2096. [2020-10-16 11:23:33,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2096 states. [2020-10-16 11:23:33,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2096 states to 2096 states and 7876 transitions. [2020-10-16 11:23:33,837 INFO L78 Accepts]: Start accepts. Automaton has 2096 states and 7876 transitions. Word has length 21 [2020-10-16 11:23:33,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:33,837 INFO L481 AbstractCegarLoop]: Abstraction has 2096 states and 7876 transitions. [2020-10-16 11:23:33,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 11:23:33,837 INFO L276 IsEmpty]: Start isEmpty. Operand 2096 states and 7876 transitions. [2020-10-16 11:23:33,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:23:33,839 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:33,839 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:33,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-16 11:23:33,839 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]=== [2020-10-16 11:23:33,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:33,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1867041768, now seen corresponding path program 6 times [2020-10-16 11:23:33,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:33,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013871528] [2020-10-16 11:23:33,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:33,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:33,906 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 11:23:33,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013871528] [2020-10-16 11:23:33,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:33,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 11:23:33,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090966062] [2020-10-16 11:23:33,907 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 11:23:33,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:33,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 11:23:33,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:23:33,908 INFO L87 Difference]: Start difference. First operand 2096 states and 7876 transitions. Second operand 9 states. [2020-10-16 11:23:34,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:34,371 INFO L93 Difference]: Finished difference Result 6017 states and 18791 transitions. [2020-10-16 11:23:34,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:23:34,372 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-16 11:23:34,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:34,381 INFO L225 Difference]: With dead ends: 6017 [2020-10-16 11:23:34,381 INFO L226 Difference]: Without dead ends: 6002 [2020-10-16 11:23:34,382 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 11:23:34,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6002 states. [2020-10-16 11:23:34,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6002 to 1965. [2020-10-16 11:23:34,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1965 states. [2020-10-16 11:23:34,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1965 states to 1965 states and 7429 transitions. [2020-10-16 11:23:34,477 INFO L78 Accepts]: Start accepts. Automaton has 1965 states and 7429 transitions. Word has length 21 [2020-10-16 11:23:34,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:34,477 INFO L481 AbstractCegarLoop]: Abstraction has 1965 states and 7429 transitions. [2020-10-16 11:23:34,477 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 11:23:34,477 INFO L276 IsEmpty]: Start isEmpty. Operand 1965 states and 7429 transitions. [2020-10-16 11:23:34,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-16 11:23:34,479 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:34,479 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:34,480 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-16 11:23:34,480 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]=== [2020-10-16 11:23:34,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:34,480 INFO L82 PathProgramCache]: Analyzing trace with hash 150840888, now seen corresponding path program 1 times [2020-10-16 11:23:34,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:34,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54714654] [2020-10-16 11:23:34,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:34,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 11:23:34,493 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 11:23:34,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 11:23:34,501 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 11:23:34,516 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 11:23:34,516 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 11:23:34,516 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-16 11:23:34,517 WARN L371 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 11:23:34,518 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-10-16 11:23:34,531 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,531 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,532 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,532 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,532 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,532 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,532 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,532 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,532 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,533 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,533 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,533 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,533 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,533 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,533 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,533 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,534 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,534 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,534 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,534 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,534 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,534 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,534 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,534 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,535 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,535 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,535 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,535 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,535 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,535 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,535 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,536 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,536 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,536 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,536 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,536 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,536 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,536 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,536 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,537 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,537 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,537 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,537 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,537 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,537 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,538 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,538 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,538 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,538 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,538 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,538 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,538 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,538 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,539 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,539 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,539 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,539 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,539 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,539 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,540 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,540 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,540 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,540 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,540 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,540 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,540 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,541 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,541 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,541 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,542 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,542 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,542 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,542 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,542 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,542 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,542 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,543 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,543 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,543 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,543 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,543 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,544 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,544 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,544 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,544 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,545 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,545 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,545 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,545 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,545 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,545 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,546 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,546 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,546 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,546 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,546 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,547 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,547 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,547 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,547 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,547 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,547 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,548 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,548 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,548 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,548 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,548 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,549 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,549 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,549 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,550 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,550 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,551 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,551 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,551 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,552 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,552 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,553 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,553 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,553 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,554 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,554 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,555 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,555 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,555 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,556 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,556 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,556 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,556 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,556 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,557 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,558 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,558 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,558 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,558 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,559 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,560 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,560 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,560 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,560 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,560 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,561 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,562 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,562 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,562 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,562 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,562 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,563 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,564 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,564 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,565 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,565 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,565 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,565 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,566 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,566 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,566 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,567 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,567 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,567 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,568 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 11:23:34,568 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-10-16 11:23:34,568 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 11:23:34,568 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 11:23:34,569 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 11:23:34,569 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 11:23:34,569 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 11:23:34,569 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 11:23:34,569 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 11:23:34,569 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 11:23:34,571 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 11:23:34,571 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 139 places, 123 transitions, 336 flow [2020-10-16 11:23:34,571 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 139 places, 123 transitions, 336 flow [2020-10-16 11:23:34,571 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 139 places, 123 transitions, 336 flow [2020-10-16 11:23:34,591 INFO L129 PetriNetUnfolder]: 7/149 cut-off events. [2020-10-16 11:23:34,592 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-10-16 11:23:34,594 INFO L80 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 149 events. 7/149 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 256 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 176. Up to 12 conditions per place. [2020-10-16 11:23:34,600 INFO L117 LiptonReduction]: Number of co-enabled transitions 2860 [2020-10-16 11:23:36,332 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-10-16 11:23:36,398 INFO L132 LiptonReduction]: Checked pairs total: 4168 [2020-10-16 11:23:36,398 INFO L134 LiptonReduction]: Total number of compositions: 121 [2020-10-16 11:23:36,398 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 61 places, 39 transitions, 168 flow [2020-10-16 11:23:36,865 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 6191 states. [2020-10-16 11:23:36,865 INFO L276 IsEmpty]: Start isEmpty. Operand 6191 states. [2020-10-16 11:23:36,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-16 11:23:36,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:36,865 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-16 11:23:36,866 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]=== [2020-10-16 11:23:36,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:36,866 INFO L82 PathProgramCache]: Analyzing trace with hash 1011964, now seen corresponding path program 1 times [2020-10-16 11:23:36,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:36,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648801846] [2020-10-16 11:23:36,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:36,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:36,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:36,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648801846] [2020-10-16 11:23:36,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:36,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 11:23:36,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633291379] [2020-10-16 11:23:36,883 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:23:36,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:36,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:23:36,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:23:36,883 INFO L87 Difference]: Start difference. First operand 6191 states. Second operand 3 states. [2020-10-16 11:23:36,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:36,943 INFO L93 Difference]: Finished difference Result 5844 states and 26316 transitions. [2020-10-16 11:23:36,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:23:36,943 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-16 11:23:36,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:36,956 INFO L225 Difference]: With dead ends: 5844 [2020-10-16 11:23:36,956 INFO L226 Difference]: Without dead ends: 5479 [2020-10-16 11:23:36,956 INFO L677 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 [2020-10-16 11:23:37,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5479 states. [2020-10-16 11:23:37,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5479 to 5479. [2020-10-16 11:23:37,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5479 states. [2020-10-16 11:23:37,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5479 states to 5479 states and 24493 transitions. [2020-10-16 11:23:37,204 INFO L78 Accepts]: Start accepts. Automaton has 5479 states and 24493 transitions. Word has length 3 [2020-10-16 11:23:37,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:37,205 INFO L481 AbstractCegarLoop]: Abstraction has 5479 states and 24493 transitions. [2020-10-16 11:23:37,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:23:37,205 INFO L276 IsEmpty]: Start isEmpty. Operand 5479 states and 24493 transitions. [2020-10-16 11:23:37,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 11:23:37,205 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:37,205 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:37,205 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-16 11:23:37,206 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]=== [2020-10-16 11:23:37,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:37,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1084774388, now seen corresponding path program 1 times [2020-10-16 11:23:37,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:37,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630792675] [2020-10-16 11:23:37,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:37,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:37,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:37,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630792675] [2020-10-16 11:23:37,226 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:37,226 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:23:37,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571790940] [2020-10-16 11:23:37,227 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:23:37,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:37,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:23:37,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:23:37,227 INFO L87 Difference]: Start difference. First operand 5479 states and 24493 transitions. Second operand 5 states. [2020-10-16 11:23:37,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:37,353 INFO L93 Difference]: Finished difference Result 9673 states and 40333 transitions. [2020-10-16 11:23:37,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 11:23:37,353 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-16 11:23:37,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:37,374 INFO L225 Difference]: With dead ends: 9673 [2020-10-16 11:23:37,375 INFO L226 Difference]: Without dead ends: 9666 [2020-10-16 11:23:37,375 INFO L677 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 [2020-10-16 11:23:37,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9666 states. [2020-10-16 11:23:37,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9666 to 6331. [2020-10-16 11:23:37,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6331 states. [2020-10-16 11:23:37,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6331 states to 6331 states and 28544 transitions. [2020-10-16 11:23:37,566 INFO L78 Accepts]: Start accepts. Automaton has 6331 states and 28544 transitions. Word has length 9 [2020-10-16 11:23:37,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:37,566 INFO L481 AbstractCegarLoop]: Abstraction has 6331 states and 28544 transitions. [2020-10-16 11:23:37,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:23:37,566 INFO L276 IsEmpty]: Start isEmpty. Operand 6331 states and 28544 transitions. [2020-10-16 11:23:37,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 11:23:37,566 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:37,566 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:37,566 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-16 11:23:37,567 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]=== [2020-10-16 11:23:37,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:37,567 INFO L82 PathProgramCache]: Analyzing trace with hash 2112403116, now seen corresponding path program 1 times [2020-10-16 11:23:37,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:37,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434581359] [2020-10-16 11:23:37,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:37,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:37,596 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 11:23:37,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434581359] [2020-10-16 11:23:37,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:37,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:23:37,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291047423] [2020-10-16 11:23:37,598 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:23:37,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:37,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:23:37,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:23:37,598 INFO L87 Difference]: Start difference. First operand 6331 states and 28544 transitions. Second operand 5 states. [2020-10-16 11:23:37,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:37,724 INFO L93 Difference]: Finished difference Result 11081 states and 46826 transitions. [2020-10-16 11:23:37,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 11:23:37,724 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-16 11:23:37,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:37,748 INFO L225 Difference]: With dead ends: 11081 [2020-10-16 11:23:37,749 INFO L226 Difference]: Without dead ends: 11068 [2020-10-16 11:23:37,749 INFO L677 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 [2020-10-16 11:23:37,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11068 states. [2020-10-16 11:23:37,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11068 to 7391. [2020-10-16 11:23:37,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7391 states. [2020-10-16 11:23:38,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7391 states to 7391 states and 33694 transitions. [2020-10-16 11:23:38,742 INFO L78 Accepts]: Start accepts. Automaton has 7391 states and 33694 transitions. Word has length 13 [2020-10-16 11:23:38,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:38,743 INFO L481 AbstractCegarLoop]: Abstraction has 7391 states and 33694 transitions. [2020-10-16 11:23:38,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:23:38,743 INFO L276 IsEmpty]: Start isEmpty. Operand 7391 states and 33694 transitions. [2020-10-16 11:23:38,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 11:23:38,743 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:38,743 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:38,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-16 11:23:38,744 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]=== [2020-10-16 11:23:38,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:38,744 INFO L82 PathProgramCache]: Analyzing trace with hash -28983895, now seen corresponding path program 1 times [2020-10-16 11:23:38,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:38,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915275223] [2020-10-16 11:23:38,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:38,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:38,789 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:38,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915275223] [2020-10-16 11:23:38,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562979004] [2020-10-16 11:23:38,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:23:38,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:38,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 11:23:38,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:23:38,896 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:38,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:23:38,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-16 11:23:38,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308564331] [2020-10-16 11:23:38,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 11:23:38,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:38,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 11:23:38,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:23:38,898 INFO L87 Difference]: Start difference. First operand 7391 states and 33694 transitions. Second operand 9 states. [2020-10-16 11:23:39,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:39,178 INFO L93 Difference]: Finished difference Result 16749 states and 66010 transitions. [2020-10-16 11:23:39,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:23:39,179 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-10-16 11:23:39,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:39,216 INFO L225 Difference]: With dead ends: 16749 [2020-10-16 11:23:39,216 INFO L226 Difference]: Without dead ends: 16736 [2020-10-16 11:23:39,217 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-10-16 11:23:39,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16736 states. [2020-10-16 11:23:39,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16736 to 7303. [2020-10-16 11:23:39,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7303 states. [2020-10-16 11:23:39,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7303 states to 7303 states and 33260 transitions. [2020-10-16 11:23:39,490 INFO L78 Accepts]: Start accepts. Automaton has 7303 states and 33260 transitions. Word has length 15 [2020-10-16 11:23:39,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:39,490 INFO L481 AbstractCegarLoop]: Abstraction has 7303 states and 33260 transitions. [2020-10-16 11:23:39,490 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 11:23:39,490 INFO L276 IsEmpty]: Start isEmpty. Operand 7303 states and 33260 transitions. [2020-10-16 11:23:39,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 11:23:39,490 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:39,491 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:39,691 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:23:39,692 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]=== [2020-10-16 11:23:39,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:39,692 INFO L82 PathProgramCache]: Analyzing trace with hash -1500121559, now seen corresponding path program 2 times [2020-10-16 11:23:39,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:39,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474873729] [2020-10-16 11:23:39,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:39,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:39,727 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 11:23:39,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474873729] [2020-10-16 11:23:39,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:39,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 11:23:39,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566553297] [2020-10-16 11:23:39,728 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 11:23:39,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:39,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 11:23:39,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:23:39,729 INFO L87 Difference]: Start difference. First operand 7303 states and 33260 transitions. Second operand 7 states. [2020-10-16 11:23:39,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:39,992 INFO L93 Difference]: Finished difference Result 17085 states and 67393 transitions. [2020-10-16 11:23:39,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:23:39,993 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-16 11:23:39,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:40,031 INFO L225 Difference]: With dead ends: 17085 [2020-10-16 11:23:40,031 INFO L226 Difference]: Without dead ends: 17071 [2020-10-16 11:23:40,031 INFO L677 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 [2020-10-16 11:23:40,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17071 states. [2020-10-16 11:23:40,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17071 to 7048. [2020-10-16 11:23:40,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7048 states. [2020-10-16 11:23:40,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7048 states to 7048 states and 32136 transitions. [2020-10-16 11:23:40,440 INFO L78 Accepts]: Start accepts. Automaton has 7048 states and 32136 transitions. Word has length 15 [2020-10-16 11:23:40,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:40,440 INFO L481 AbstractCegarLoop]: Abstraction has 7048 states and 32136 transitions. [2020-10-16 11:23:40,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 11:23:40,440 INFO L276 IsEmpty]: Start isEmpty. Operand 7048 states and 32136 transitions. [2020-10-16 11:23:40,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 11:23:40,441 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:40,441 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:40,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-16 11:23:40,441 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]=== [2020-10-16 11:23:40,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:40,441 INFO L82 PathProgramCache]: Analyzing trace with hash -1891696605, now seen corresponding path program 1 times [2020-10-16 11:23:40,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:40,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316375972] [2020-10-16 11:23:40,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:40,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:40,485 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 11:23:40,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316375972] [2020-10-16 11:23:40,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:40,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:23:40,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917112974] [2020-10-16 11:23:40,486 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:23:40,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:40,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:23:40,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:23:40,487 INFO L87 Difference]: Start difference. First operand 7048 states and 32136 transitions. Second operand 5 states. [2020-10-16 11:23:40,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:40,621 INFO L93 Difference]: Finished difference Result 12234 states and 52488 transitions. [2020-10-16 11:23:40,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 11:23:40,621 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-16 11:23:40,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:40,665 INFO L225 Difference]: With dead ends: 12234 [2020-10-16 11:23:40,665 INFO L226 Difference]: Without dead ends: 12212 [2020-10-16 11:23:40,666 INFO L677 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 [2020-10-16 11:23:40,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12212 states. [2020-10-16 11:23:40,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12212 to 8342. [2020-10-16 11:23:40,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8342 states. [2020-10-16 11:23:40,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8342 states to 8342 states and 38278 transitions. [2020-10-16 11:23:40,936 INFO L78 Accepts]: Start accepts. Automaton has 8342 states and 38278 transitions. Word has length 17 [2020-10-16 11:23:40,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:40,936 INFO L481 AbstractCegarLoop]: Abstraction has 8342 states and 38278 transitions. [2020-10-16 11:23:40,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:23:40,936 INFO L276 IsEmpty]: Start isEmpty. Operand 8342 states and 38278 transitions. [2020-10-16 11:23:40,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 11:23:40,937 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:40,937 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:40,938 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-16 11:23:40,938 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]=== [2020-10-16 11:23:40,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:40,938 INFO L82 PathProgramCache]: Analyzing trace with hash -74039136, now seen corresponding path program 1 times [2020-10-16 11:23:40,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:40,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295626018] [2020-10-16 11:23:40,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:40,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:40,972 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 11:23:40,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295626018] [2020-10-16 11:23:40,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35680595] [2020-10-16 11:23:40,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:23:41,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:41,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 11:23:41,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:23:41,070 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 11:23:41,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:23:41,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-16 11:23:41,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231016822] [2020-10-16 11:23:41,071 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 11:23:41,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:41,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 11:23:41,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:23:41,072 INFO L87 Difference]: Start difference. First operand 8342 states and 38278 transitions. Second operand 9 states. [2020-10-16 11:23:41,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:41,428 INFO L93 Difference]: Finished difference Result 19016 states and 76191 transitions. [2020-10-16 11:23:41,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:23:41,429 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2020-10-16 11:23:41,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:41,471 INFO L225 Difference]: With dead ends: 19016 [2020-10-16 11:23:41,471 INFO L226 Difference]: Without dead ends: 18998 [2020-10-16 11:23:41,471 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-10-16 11:23:41,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18998 states. [2020-10-16 11:23:41,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18998 to 8452. [2020-10-16 11:23:41,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8452 states. [2020-10-16 11:23:41,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8452 states to 8452 states and 38704 transitions. [2020-10-16 11:23:41,770 INFO L78 Accepts]: Start accepts. Automaton has 8452 states and 38704 transitions. Word has length 19 [2020-10-16 11:23:41,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:41,771 INFO L481 AbstractCegarLoop]: Abstraction has 8452 states and 38704 transitions. [2020-10-16 11:23:41,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 11:23:41,771 INFO L276 IsEmpty]: Start isEmpty. Operand 8452 states and 38704 transitions. [2020-10-16 11:23:41,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 11:23:41,772 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:41,772 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:41,987 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-10-16 11:23:41,988 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]=== [2020-10-16 11:23:41,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:41,989 INFO L82 PathProgramCache]: Analyzing trace with hash -274460668, now seen corresponding path program 1 times [2020-10-16 11:23:41,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:41,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87679063] [2020-10-16 11:23:41,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:41,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:42,024 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 11:23:42,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87679063] [2020-10-16 11:23:42,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737063471] [2020-10-16 11:23:42,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:23:42,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:42,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 11:23:42,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:23:42,115 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 11:23:42,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:23:42,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-16 11:23:42,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594880151] [2020-10-16 11:23:42,116 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 11:23:42,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:42,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 11:23:42,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:23:42,116 INFO L87 Difference]: Start difference. First operand 8452 states and 38704 transitions. Second operand 9 states. [2020-10-16 11:23:42,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:42,414 INFO L93 Difference]: Finished difference Result 19670 states and 79028 transitions. [2020-10-16 11:23:42,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:23:42,414 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2020-10-16 11:23:42,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:42,481 INFO L225 Difference]: With dead ends: 19670 [2020-10-16 11:23:42,481 INFO L226 Difference]: Without dead ends: 19645 [2020-10-16 11:23:42,481 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-10-16 11:23:42,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19645 states. [2020-10-16 11:23:43,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19645 to 8480. [2020-10-16 11:23:43,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8480 states. [2020-10-16 11:23:43,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8480 states to 8480 states and 38825 transitions. [2020-10-16 11:23:43,032 INFO L78 Accepts]: Start accepts. Automaton has 8480 states and 38825 transitions. Word has length 19 [2020-10-16 11:23:43,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:43,032 INFO L481 AbstractCegarLoop]: Abstraction has 8480 states and 38825 transitions. [2020-10-16 11:23:43,032 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 11:23:43,032 INFO L276 IsEmpty]: Start isEmpty. Operand 8480 states and 38825 transitions. [2020-10-16 11:23:43,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 11:23:43,033 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:43,033 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:43,233 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-10-16 11:23:43,234 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]=== [2020-10-16 11:23:43,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:43,234 INFO L82 PathProgramCache]: Analyzing trace with hash -1149256224, now seen corresponding path program 2 times [2020-10-16 11:23:43,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:43,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710890101] [2020-10-16 11:23:43,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:43,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:43,268 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 11:23:43,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710890101] [2020-10-16 11:23:43,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:43,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 11:23:43,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699155125] [2020-10-16 11:23:43,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 11:23:43,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:43,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 11:23:43,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:23:43,270 INFO L87 Difference]: Start difference. First operand 8480 states and 38825 transitions. Second operand 7 states. [2020-10-16 11:23:43,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:43,539 INFO L93 Difference]: Finished difference Result 19852 states and 79846 transitions. [2020-10-16 11:23:43,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:23:43,540 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-16 11:23:43,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:43,589 INFO L225 Difference]: With dead ends: 19852 [2020-10-16 11:23:43,590 INFO L226 Difference]: Without dead ends: 19827 [2020-10-16 11:23:43,595 INFO L677 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 [2020-10-16 11:23:43,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19827 states. [2020-10-16 11:23:43,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19827 to 8379. [2020-10-16 11:23:43,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8379 states. [2020-10-16 11:23:43,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8379 states to 8379 states and 38406 transitions. [2020-10-16 11:23:43,920 INFO L78 Accepts]: Start accepts. Automaton has 8379 states and 38406 transitions. Word has length 19 [2020-10-16 11:23:43,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:43,921 INFO L481 AbstractCegarLoop]: Abstraction has 8379 states and 38406 transitions. [2020-10-16 11:23:43,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 11:23:43,921 INFO L276 IsEmpty]: Start isEmpty. Operand 8379 states and 38406 transitions. [2020-10-16 11:23:43,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 11:23:43,921 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:43,922 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:43,922 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-16 11:23:43,922 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]=== [2020-10-16 11:23:43,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:43,922 INFO L82 PathProgramCache]: Analyzing trace with hash -1149271290, now seen corresponding path program 2 times [2020-10-16 11:23:43,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:43,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34891272] [2020-10-16 11:23:43,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:43,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:43,956 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 11:23:43,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34891272] [2020-10-16 11:23:43,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:43,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 11:23:43,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591952833] [2020-10-16 11:23:43,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 11:23:43,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:43,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 11:23:43,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:23:43,958 INFO L87 Difference]: Start difference. First operand 8379 states and 38406 transitions. Second operand 7 states. [2020-10-16 11:23:44,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:44,218 INFO L93 Difference]: Finished difference Result 19555 states and 78564 transitions. [2020-10-16 11:23:44,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:23:44,219 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-16 11:23:44,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:44,262 INFO L225 Difference]: With dead ends: 19555 [2020-10-16 11:23:44,262 INFO L226 Difference]: Without dead ends: 19530 [2020-10-16 11:23:44,262 INFO L677 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 [2020-10-16 11:23:44,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19530 states. [2020-10-16 11:23:44,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19530 to 8317. [2020-10-16 11:23:44,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8317 states. [2020-10-16 11:23:44,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8317 states to 8317 states and 38184 transitions. [2020-10-16 11:23:44,722 INFO L78 Accepts]: Start accepts. Automaton has 8317 states and 38184 transitions. Word has length 19 [2020-10-16 11:23:44,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:44,722 INFO L481 AbstractCegarLoop]: Abstraction has 8317 states and 38184 transitions. [2020-10-16 11:23:44,722 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 11:23:44,722 INFO L276 IsEmpty]: Start isEmpty. Operand 8317 states and 38184 transitions. [2020-10-16 11:23:44,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:23:44,723 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:44,723 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:44,723 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-16 11:23:44,724 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]=== [2020-10-16 11:23:44,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:44,724 INFO L82 PathProgramCache]: Analyzing trace with hash -1557322431, now seen corresponding path program 1 times [2020-10-16 11:23:44,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:44,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047556874] [2020-10-16 11:23:44,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:44,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:44,778 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:44,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047556874] [2020-10-16 11:23:44,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044889394] [2020-10-16 11:23:44,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:23:44,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:44,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 11:23:44,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:23:44,879 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:44,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:23:44,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 11:23:44,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204728486] [2020-10-16 11:23:44,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 11:23:44,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:44,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 11:23:44,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-16 11:23:44,881 INFO L87 Difference]: Start difference. First operand 8317 states and 38184 transitions. Second operand 11 states. [2020-10-16 11:23:45,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:45,551 INFO L93 Difference]: Finished difference Result 26969 states and 101544 transitions. [2020-10-16 11:23:45,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:23:45,552 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-10-16 11:23:45,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:45,611 INFO L225 Difference]: With dead ends: 26969 [2020-10-16 11:23:45,611 INFO L226 Difference]: Without dead ends: 26957 [2020-10-16 11:23:45,612 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 11:23:45,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26957 states. [2020-10-16 11:23:45,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26957 to 8204. [2020-10-16 11:23:45,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8204 states. [2020-10-16 11:23:45,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8204 states to 8204 states and 37628 transitions. [2020-10-16 11:23:45,980 INFO L78 Accepts]: Start accepts. Automaton has 8204 states and 37628 transitions. Word has length 21 [2020-10-16 11:23:45,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:45,980 INFO L481 AbstractCegarLoop]: Abstraction has 8204 states and 37628 transitions. [2020-10-16 11:23:45,980 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 11:23:45,980 INFO L276 IsEmpty]: Start isEmpty. Operand 8204 states and 37628 transitions. [2020-10-16 11:23:45,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:23:45,981 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:45,981 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:46,181 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:23:46,182 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]=== [2020-10-16 11:23:46,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:46,183 INFO L82 PathProgramCache]: Analyzing trace with hash 1862834243, now seen corresponding path program 2 times [2020-10-16 11:23:46,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:46,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861170449] [2020-10-16 11:23:46,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:46,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:46,236 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 11:23:46,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861170449] [2020-10-16 11:23:46,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639492724] [2020-10-16 11:23:46,239 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:23:46,310 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 11:23:46,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:23:46,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 11:23:46,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:23:46,334 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 11:23:46,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:23:46,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 11:23:46,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581829684] [2020-10-16 11:23:46,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 11:23:46,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:46,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 11:23:46,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-16 11:23:46,341 INFO L87 Difference]: Start difference. First operand 8204 states and 37628 transitions. Second operand 11 states. [2020-10-16 11:23:47,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:47,161 INFO L93 Difference]: Finished difference Result 26661 states and 100277 transitions. [2020-10-16 11:23:47,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:23:47,161 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-10-16 11:23:47,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:47,219 INFO L225 Difference]: With dead ends: 26661 [2020-10-16 11:23:47,220 INFO L226 Difference]: Without dead ends: 26645 [2020-10-16 11:23:47,220 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 11:23:47,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26645 states. [2020-10-16 11:23:47,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26645 to 8091. [2020-10-16 11:23:47,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8091 states. [2020-10-16 11:23:47,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8091 states to 8091 states and 37076 transitions. [2020-10-16 11:23:47,589 INFO L78 Accepts]: Start accepts. Automaton has 8091 states and 37076 transitions. Word has length 21 [2020-10-16 11:23:47,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:47,589 INFO L481 AbstractCegarLoop]: Abstraction has 8091 states and 37076 transitions. [2020-10-16 11:23:47,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 11:23:47,589 INFO L276 IsEmpty]: Start isEmpty. Operand 8091 states and 37076 transitions. [2020-10-16 11:23:47,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:23:47,590 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:47,590 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:47,790 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2020-10-16 11:23:47,791 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]=== [2020-10-16 11:23:47,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:47,791 INFO L82 PathProgramCache]: Analyzing trace with hash -1769991039, now seen corresponding path program 3 times [2020-10-16 11:23:47,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:47,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545479848] [2020-10-16 11:23:47,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:47,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:47,851 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 11:23:47,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545479848] [2020-10-16 11:23:47,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825880636] [2020-10-16 11:23:47,852 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:23:47,937 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 11:23:47,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:23:47,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 11:23:47,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:23:47,966 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 11:23:47,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:23:47,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 11:23:47,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283565739] [2020-10-16 11:23:47,967 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 11:23:47,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:47,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 11:23:47,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-16 11:23:47,968 INFO L87 Difference]: Start difference. First operand 8091 states and 37076 transitions. Second operand 11 states. [2020-10-16 11:23:48,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:48,627 INFO L93 Difference]: Finished difference Result 26686 states and 100402 transitions. [2020-10-16 11:23:48,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:23:48,628 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-10-16 11:23:48,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:48,694 INFO L225 Difference]: With dead ends: 26686 [2020-10-16 11:23:48,694 INFO L226 Difference]: Without dead ends: 26674 [2020-10-16 11:23:48,695 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 11:23:48,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26674 states. [2020-10-16 11:23:49,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26674 to 7861. [2020-10-16 11:23:49,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7861 states. [2020-10-16 11:23:49,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7861 states to 7861 states and 36066 transitions. [2020-10-16 11:23:49,216 INFO L78 Accepts]: Start accepts. Automaton has 7861 states and 36066 transitions. Word has length 21 [2020-10-16 11:23:49,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:49,216 INFO L481 AbstractCegarLoop]: Abstraction has 7861 states and 36066 transitions. [2020-10-16 11:23:49,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 11:23:49,216 INFO L276 IsEmpty]: Start isEmpty. Operand 7861 states and 36066 transitions. [2020-10-16 11:23:49,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:23:49,217 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:49,217 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:49,425 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:23:49,426 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]=== [2020-10-16 11:23:49,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:49,426 INFO L82 PathProgramCache]: Analyzing trace with hash -1763681919, now seen corresponding path program 4 times [2020-10-16 11:23:49,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:49,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025725159] [2020-10-16 11:23:49,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:49,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:49,474 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 11:23:49,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025725159] [2020-10-16 11:23:49,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178786545] [2020-10-16 11:23:49,475 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:23:49,546 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 11:23:49,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:23:49,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 11:23:49,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:23:49,571 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 11:23:49,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:23:49,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 11:23:49,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77402117] [2020-10-16 11:23:49,572 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 11:23:49,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:49,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 11:23:49,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-16 11:23:49,573 INFO L87 Difference]: Start difference. First operand 7861 states and 36066 transitions. Second operand 11 states. [2020-10-16 11:23:50,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:50,223 INFO L93 Difference]: Finished difference Result 26489 states and 99650 transitions. [2020-10-16 11:23:50,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:23:50,224 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-10-16 11:23:50,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:50,287 INFO L225 Difference]: With dead ends: 26489 [2020-10-16 11:23:50,287 INFO L226 Difference]: Without dead ends: 26473 [2020-10-16 11:23:50,287 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 11:23:50,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26473 states. [2020-10-16 11:23:50,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26473 to 7748. [2020-10-16 11:23:50,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7748 states. [2020-10-16 11:23:50,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7748 states to 7748 states and 35514 transitions. [2020-10-16 11:23:50,647 INFO L78 Accepts]: Start accepts. Automaton has 7748 states and 35514 transitions. Word has length 21 [2020-10-16 11:23:50,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:50,647 INFO L481 AbstractCegarLoop]: Abstraction has 7748 states and 35514 transitions. [2020-10-16 11:23:50,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 11:23:50,648 INFO L276 IsEmpty]: Start isEmpty. Operand 7748 states and 35514 transitions. [2020-10-16 11:23:50,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:23:50,649 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:50,649 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:50,854 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2020-10-16 11:23:50,855 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]=== [2020-10-16 11:23:50,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:50,855 INFO L82 PathProgramCache]: Analyzing trace with hash 1774143127, now seen corresponding path program 1 times [2020-10-16 11:23:50,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:50,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898586937] [2020-10-16 11:23:50,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:50,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:50,882 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 11:23:50,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898586937] [2020-10-16 11:23:50,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:50,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:23:50,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698164154] [2020-10-16 11:23:50,883 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:23:50,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:50,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:23:50,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:23:50,884 INFO L87 Difference]: Start difference. First operand 7748 states and 35514 transitions. Second operand 5 states. [2020-10-16 11:23:51,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:51,004 INFO L93 Difference]: Finished difference Result 13251 states and 57501 transitions. [2020-10-16 11:23:51,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 11:23:51,005 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-16 11:23:51,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:51,035 INFO L225 Difference]: With dead ends: 13251 [2020-10-16 11:23:51,035 INFO L226 Difference]: Without dead ends: 13220 [2020-10-16 11:23:51,035 INFO L677 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 [2020-10-16 11:23:51,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13220 states. [2020-10-16 11:23:51,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13220 to 9255. [2020-10-16 11:23:51,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9255 states. [2020-10-16 11:23:51,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9255 states to 9255 states and 42368 transitions. [2020-10-16 11:23:51,438 INFO L78 Accepts]: Start accepts. Automaton has 9255 states and 42368 transitions. Word has length 21 [2020-10-16 11:23:51,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:51,439 INFO L481 AbstractCegarLoop]: Abstraction has 9255 states and 42368 transitions. [2020-10-16 11:23:51,439 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:23:51,439 INFO L276 IsEmpty]: Start isEmpty. Operand 9255 states and 42368 transitions. [2020-10-16 11:23:51,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:23:51,440 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:51,440 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:51,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-16 11:23:51,441 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]=== [2020-10-16 11:23:51,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:51,441 INFO L82 PathProgramCache]: Analyzing trace with hash -628636285, now seen corresponding path program 5 times [2020-10-16 11:23:51,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:51,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95652050] [2020-10-16 11:23:51,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:51,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:51,492 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 11:23:51,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95652050] [2020-10-16 11:23:51,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:51,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 11:23:51,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771832677] [2020-10-16 11:23:51,493 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 11:23:51,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:51,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 11:23:51,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:23:51,493 INFO L87 Difference]: Start difference. First operand 9255 states and 42368 transitions. Second operand 9 states. [2020-10-16 11:23:52,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:52,242 INFO L93 Difference]: Finished difference Result 29788 states and 113841 transitions. [2020-10-16 11:23:52,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:23:52,243 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-16 11:23:52,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:52,358 INFO L225 Difference]: With dead ends: 29788 [2020-10-16 11:23:52,358 INFO L226 Difference]: Without dead ends: 29770 [2020-10-16 11:23:52,359 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 11:23:52,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29770 states. [2020-10-16 11:23:53,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29770 to 8964. [2020-10-16 11:23:53,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8964 states. [2020-10-16 11:23:53,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8964 states to 8964 states and 41031 transitions. [2020-10-16 11:23:53,086 INFO L78 Accepts]: Start accepts. Automaton has 8964 states and 41031 transitions. Word has length 21 [2020-10-16 11:23:53,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:53,087 INFO L481 AbstractCegarLoop]: Abstraction has 8964 states and 41031 transitions. [2020-10-16 11:23:53,087 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 11:23:53,087 INFO L276 IsEmpty]: Start isEmpty. Operand 8964 states and 41031 transitions. [2020-10-16 11:23:53,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:23:53,088 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:53,088 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:53,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-16 11:23:53,089 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]=== [2020-10-16 11:23:53,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:53,089 INFO L82 PathProgramCache]: Analyzing trace with hash -643099645, now seen corresponding path program 6 times [2020-10-16 11:23:53,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:53,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487116030] [2020-10-16 11:23:53,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:53,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:53,141 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 11:23:53,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487116030] [2020-10-16 11:23:53,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:53,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 11:23:53,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506331695] [2020-10-16 11:23:53,142 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 11:23:53,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:53,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 11:23:53,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:23:53,143 INFO L87 Difference]: Start difference. First operand 8964 states and 41031 transitions. Second operand 9 states. [2020-10-16 11:23:53,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:53,852 INFO L93 Difference]: Finished difference Result 29379 states and 112099 transitions. [2020-10-16 11:23:53,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:23:53,852 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-16 11:23:53,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:53,915 INFO L225 Difference]: With dead ends: 29379 [2020-10-16 11:23:53,916 INFO L226 Difference]: Without dead ends: 29356 [2020-10-16 11:23:53,916 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 11:23:54,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29356 states. [2020-10-16 11:23:54,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29356 to 8573. [2020-10-16 11:23:54,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8573 states. [2020-10-16 11:23:54,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8573 states to 8573 states and 39353 transitions. [2020-10-16 11:23:54,501 INFO L78 Accepts]: Start accepts. Automaton has 8573 states and 39353 transitions. Word has length 21 [2020-10-16 11:23:54,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:54,501 INFO L481 AbstractCegarLoop]: Abstraction has 8573 states and 39353 transitions. [2020-10-16 11:23:54,501 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 11:23:54,501 INFO L276 IsEmpty]: Start isEmpty. Operand 8573 states and 39353 transitions. [2020-10-16 11:23:54,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 11:23:54,503 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:54,503 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:54,503 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-16 11:23:54,503 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]=== [2020-10-16 11:23:54,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:54,504 INFO L82 PathProgramCache]: Analyzing trace with hash 1599602836, now seen corresponding path program 1 times [2020-10-16 11:23:54,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:54,504 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827559575] [2020-10-16 11:23:54,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:54,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:54,543 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-16 11:23:54,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827559575] [2020-10-16 11:23:54,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945898705] [2020-10-16 11:23:54,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:23:54,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:54,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 11:23:54,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:23:54,637 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-16 11:23:54,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:23:54,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-16 11:23:54,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425278639] [2020-10-16 11:23:54,638 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 11:23:54,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:54,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 11:23:54,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:23:54,639 INFO L87 Difference]: Start difference. First operand 8573 states and 39353 transitions. Second operand 9 states. [2020-10-16 11:23:54,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:54,945 INFO L93 Difference]: Finished difference Result 19727 states and 80274 transitions. [2020-10-16 11:23:54,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:23:54,945 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-10-16 11:23:54,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:54,989 INFO L225 Difference]: With dead ends: 19727 [2020-10-16 11:23:54,989 INFO L226 Difference]: Without dead ends: 19703 [2020-10-16 11:23:54,989 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-10-16 11:23:55,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19703 states. [2020-10-16 11:23:55,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19703 to 8847. [2020-10-16 11:23:55,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8847 states. [2020-10-16 11:23:55,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8847 states to 8847 states and 40495 transitions. [2020-10-16 11:23:55,298 INFO L78 Accepts]: Start accepts. Automaton has 8847 states and 40495 transitions. Word has length 23 [2020-10-16 11:23:55,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:55,299 INFO L481 AbstractCegarLoop]: Abstraction has 8847 states and 40495 transitions. [2020-10-16 11:23:55,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 11:23:55,299 INFO L276 IsEmpty]: Start isEmpty. Operand 8847 states and 40495 transitions. [2020-10-16 11:23:55,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 11:23:55,301 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:55,301 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:55,507 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2020-10-16 11:23:55,508 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]=== [2020-10-16 11:23:55,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:55,510 INFO L82 PathProgramCache]: Analyzing trace with hash 72758744, now seen corresponding path program 1 times [2020-10-16 11:23:55,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:55,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210271104] [2020-10-16 11:23:55,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:55,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:55,549 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 11:23:55,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210271104] [2020-10-16 11:23:55,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297631873] [2020-10-16 11:23:55,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:23:55,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:55,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 11:23:55,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:23:55,646 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 11:23:55,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:23:55,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-16 11:23:55,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345203178] [2020-10-16 11:23:55,647 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 11:23:55,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:55,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 11:23:55,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:23:55,648 INFO L87 Difference]: Start difference. First operand 8847 states and 40495 transitions. Second operand 9 states. [2020-10-16 11:23:55,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:55,952 INFO L93 Difference]: Finished difference Result 20694 states and 84261 transitions. [2020-10-16 11:23:55,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:23:55,953 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-10-16 11:23:55,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:55,999 INFO L225 Difference]: With dead ends: 20694 [2020-10-16 11:23:55,999 INFO L226 Difference]: Without dead ends: 20666 [2020-10-16 11:23:55,999 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-10-16 11:23:56,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20666 states. [2020-10-16 11:23:56,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20666 to 9115. [2020-10-16 11:23:56,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9115 states. [2020-10-16 11:23:56,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9115 states to 9115 states and 41679 transitions. [2020-10-16 11:23:56,332 INFO L78 Accepts]: Start accepts. Automaton has 9115 states and 41679 transitions. Word has length 23 [2020-10-16 11:23:56,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:56,333 INFO L481 AbstractCegarLoop]: Abstraction has 9115 states and 41679 transitions. [2020-10-16 11:23:56,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 11:23:56,333 INFO L276 IsEmpty]: Start isEmpty. Operand 9115 states and 41679 transitions. [2020-10-16 11:23:56,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 11:23:56,335 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:56,335 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:56,535 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:23:56,536 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]=== [2020-10-16 11:23:56,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:56,536 INFO L82 PathProgramCache]: Analyzing trace with hash -328675496, now seen corresponding path program 1 times [2020-10-16 11:23:56,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:56,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620729556] [2020-10-16 11:23:56,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:56,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:56,698 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-16 11:23:56,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620729556] [2020-10-16 11:23:56,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342175284] [2020-10-16 11:23:56,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:23:56,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:56,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 11:23:56,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:23:56,798 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-16 11:23:56,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:23:56,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-16 11:23:56,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389063901] [2020-10-16 11:23:56,799 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 11:23:56,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:56,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 11:23:56,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:23:56,799 INFO L87 Difference]: Start difference. First operand 9115 states and 41679 transitions. Second operand 9 states. [2020-10-16 11:23:57,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:57,108 INFO L93 Difference]: Finished difference Result 21396 states and 87360 transitions. [2020-10-16 11:23:57,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:23:57,108 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-10-16 11:23:57,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:57,156 INFO L225 Difference]: With dead ends: 21396 [2020-10-16 11:23:57,156 INFO L226 Difference]: Without dead ends: 21359 [2020-10-16 11:23:57,156 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-10-16 11:23:57,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21359 states. [2020-10-16 11:23:57,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21359 to 9320. [2020-10-16 11:23:57,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9320 states. [2020-10-16 11:23:57,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9320 states to 9320 states and 42648 transitions. [2020-10-16 11:23:57,488 INFO L78 Accepts]: Start accepts. Automaton has 9320 states and 42648 transitions. Word has length 23 [2020-10-16 11:23:57,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:57,488 INFO L481 AbstractCegarLoop]: Abstraction has 9320 states and 42648 transitions. [2020-10-16 11:23:57,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 11:23:57,488 INFO L276 IsEmpty]: Start isEmpty. Operand 9320 states and 42648 transitions. [2020-10-16 11:23:57,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 11:23:57,490 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:57,490 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:57,691 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2020-10-16 11:23:57,691 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]=== [2020-10-16 11:23:57,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:57,692 INFO L82 PathProgramCache]: Analyzing trace with hash -150456492, now seen corresponding path program 2 times [2020-10-16 11:23:57,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:57,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876782064] [2020-10-16 11:23:57,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:57,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:57,725 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 11:23:57,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876782064] [2020-10-16 11:23:57,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:57,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 11:23:57,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623126763] [2020-10-16 11:23:57,726 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 11:23:57,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:57,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 11:23:57,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:23:57,727 INFO L87 Difference]: Start difference. First operand 9320 states and 42648 transitions. Second operand 7 states. [2020-10-16 11:23:58,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:58,008 INFO L93 Difference]: Finished difference Result 21489 states and 87752 transitions. [2020-10-16 11:23:58,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:23:58,008 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-16 11:23:58,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:58,059 INFO L225 Difference]: With dead ends: 21489 [2020-10-16 11:23:58,059 INFO L226 Difference]: Without dead ends: 21452 [2020-10-16 11:23:58,060 INFO L677 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 [2020-10-16 11:23:58,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21452 states. [2020-10-16 11:23:58,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21452 to 9401. [2020-10-16 11:23:58,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9401 states. [2020-10-16 11:23:58,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9401 states to 9401 states and 43010 transitions. [2020-10-16 11:23:58,395 INFO L78 Accepts]: Start accepts. Automaton has 9401 states and 43010 transitions. Word has length 23 [2020-10-16 11:23:58,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:58,395 INFO L481 AbstractCegarLoop]: Abstraction has 9401 states and 43010 transitions. [2020-10-16 11:23:58,395 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 11:23:58,395 INFO L276 IsEmpty]: Start isEmpty. Operand 9401 states and 43010 transitions. [2020-10-16 11:23:58,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 11:23:58,397 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:58,397 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:58,397 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-16 11:23:58,397 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]=== [2020-10-16 11:23:58,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:58,398 INFO L82 PathProgramCache]: Analyzing trace with hash -150471558, now seen corresponding path program 2 times [2020-10-16 11:23:58,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:58,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552609809] [2020-10-16 11:23:58,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:58,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:58,429 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 11:23:58,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552609809] [2020-10-16 11:23:58,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:58,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 11:23:58,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755599591] [2020-10-16 11:23:58,430 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 11:23:58,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:58,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 11:23:58,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:23:58,431 INFO L87 Difference]: Start difference. First operand 9401 states and 43010 transitions. Second operand 7 states. [2020-10-16 11:23:58,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:58,702 INFO L93 Difference]: Finished difference Result 21218 states and 86469 transitions. [2020-10-16 11:23:58,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:23:58,702 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-16 11:23:58,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:58,749 INFO L225 Difference]: With dead ends: 21218 [2020-10-16 11:23:58,749 INFO L226 Difference]: Without dead ends: 21181 [2020-10-16 11:23:58,749 INFO L677 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 [2020-10-16 11:23:58,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21181 states. [2020-10-16 11:23:59,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21181 to 9396. [2020-10-16 11:23:59,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9396 states. [2020-10-16 11:23:59,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9396 states to 9396 states and 42985 transitions. [2020-10-16 11:23:59,218 INFO L78 Accepts]: Start accepts. Automaton has 9396 states and 42985 transitions. Word has length 23 [2020-10-16 11:23:59,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:59,219 INFO L481 AbstractCegarLoop]: Abstraction has 9396 states and 42985 transitions. [2020-10-16 11:23:59,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 11:23:59,219 INFO L276 IsEmpty]: Start isEmpty. Operand 9396 states and 42985 transitions. [2020-10-16 11:23:59,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 11:23:59,221 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:59,221 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:59,222 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-16 11:23:59,222 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]=== [2020-10-16 11:23:59,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:59,222 INFO L82 PathProgramCache]: Analyzing trace with hash -150449920, now seen corresponding path program 2 times [2020-10-16 11:23:59,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:59,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836734649] [2020-10-16 11:23:59,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:59,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:59,253 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 11:23:59,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836734649] [2020-10-16 11:23:59,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:59,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 11:23:59,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649375761] [2020-10-16 11:23:59,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 11:23:59,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:59,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 11:23:59,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:23:59,255 INFO L87 Difference]: Start difference. First operand 9396 states and 42985 transitions. Second operand 7 states. [2020-10-16 11:23:59,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:59,532 INFO L93 Difference]: Finished difference Result 21047 states and 85702 transitions. [2020-10-16 11:23:59,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:23:59,533 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-16 11:23:59,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:59,580 INFO L225 Difference]: With dead ends: 21047 [2020-10-16 11:23:59,580 INFO L226 Difference]: Without dead ends: 21010 [2020-10-16 11:23:59,580 INFO L677 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 [2020-10-16 11:23:59,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21010 states. [2020-10-16 11:23:59,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21010 to 9426. [2020-10-16 11:23:59,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9426 states. [2020-10-16 11:23:59,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9426 states to 9426 states and 43057 transitions. [2020-10-16 11:23:59,910 INFO L78 Accepts]: Start accepts. Automaton has 9426 states and 43057 transitions. Word has length 23 [2020-10-16 11:23:59,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:59,911 INFO L481 AbstractCegarLoop]: Abstraction has 9426 states and 43057 transitions. [2020-10-16 11:23:59,911 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 11:23:59,911 INFO L276 IsEmpty]: Start isEmpty. Operand 9426 states and 43057 transitions. [2020-10-16 11:23:59,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:23:59,914 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:59,914 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:59,914 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-16 11:23:59,914 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]=== [2020-10-16 11:23:59,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:59,914 INFO L82 PathProgramCache]: Analyzing trace with hash -156736363, now seen corresponding path program 1 times [2020-10-16 11:23:59,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:59,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588440361] [2020-10-16 11:23:59,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:59,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:59,969 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 11:23:59,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588440361] [2020-10-16 11:23:59,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110389144] [2020-10-16 11:23:59,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:24:00,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:00,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 11:24:00,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:24:00,066 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 11:24:00,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:24:00,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 11:24:00,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559453970] [2020-10-16 11:24:00,067 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 11:24:00,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:24:00,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 11:24:00,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-16 11:24:00,068 INFO L87 Difference]: Start difference. First operand 9426 states and 43057 transitions. Second operand 11 states. [2020-10-16 11:24:00,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:24:00,796 INFO L93 Difference]: Finished difference Result 30145 states and 115754 transitions. [2020-10-16 11:24:00,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:24:00,797 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-16 11:24:00,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:24:00,861 INFO L225 Difference]: With dead ends: 30145 [2020-10-16 11:24:00,862 INFO L226 Difference]: Without dead ends: 30125 [2020-10-16 11:24:00,862 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 11:24:01,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30125 states. [2020-10-16 11:24:01,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30125 to 9338. [2020-10-16 11:24:01,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9338 states. [2020-10-16 11:24:01,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9338 states to 9338 states and 42582 transitions. [2020-10-16 11:24:01,286 INFO L78 Accepts]: Start accepts. Automaton has 9338 states and 42582 transitions. Word has length 25 [2020-10-16 11:24:01,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:24:01,286 INFO L481 AbstractCegarLoop]: Abstraction has 9338 states and 42582 transitions. [2020-10-16 11:24:01,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 11:24:01,286 INFO L276 IsEmpty]: Start isEmpty. Operand 9338 states and 42582 transitions. [2020-10-16 11:24:01,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:24:01,289 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:24:01,289 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:24:01,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2020-10-16 11:24:01,490 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]=== [2020-10-16 11:24:01,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:24:01,490 INFO L82 PathProgramCache]: Analyzing trace with hash -558170603, now seen corresponding path program 1 times [2020-10-16 11:24:01,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:24:01,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155410446] [2020-10-16 11:24:01,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:24:01,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:01,538 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 11:24:01,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155410446] [2020-10-16 11:24:01,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633171277] [2020-10-16 11:24:01,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:24:01,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:01,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 11:24:01,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:24:01,642 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 11:24:01,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:24:01,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 11:24:01,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914379689] [2020-10-16 11:24:01,644 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 11:24:01,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:24:01,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 11:24:01,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-16 11:24:01,644 INFO L87 Difference]: Start difference. First operand 9338 states and 42582 transitions. Second operand 11 states. [2020-10-16 11:24:02,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:24:02,422 INFO L93 Difference]: Finished difference Result 29696 states and 113916 transitions. [2020-10-16 11:24:02,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:24:02,423 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-16 11:24:02,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:24:02,487 INFO L225 Difference]: With dead ends: 29696 [2020-10-16 11:24:02,488 INFO L226 Difference]: Without dead ends: 29676 [2020-10-16 11:24:02,488 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 11:24:02,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29676 states. [2020-10-16 11:24:02,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29676 to 9291. [2020-10-16 11:24:02,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9291 states. [2020-10-16 11:24:02,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9291 states to 9291 states and 42295 transitions. [2020-10-16 11:24:02,909 INFO L78 Accepts]: Start accepts. Automaton has 9291 states and 42295 transitions. Word has length 25 [2020-10-16 11:24:02,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:24:02,909 INFO L481 AbstractCegarLoop]: Abstraction has 9291 states and 42295 transitions. [2020-10-16 11:24:02,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 11:24:02,909 INFO L276 IsEmpty]: Start isEmpty. Operand 9291 states and 42295 transitions. [2020-10-16 11:24:02,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:24:02,912 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:24:02,912 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:24:03,112 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2020-10-16 11:24:03,113 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]=== [2020-10-16 11:24:03,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:24:03,113 INFO L82 PathProgramCache]: Analyzing trace with hash -379966665, now seen corresponding path program 2 times [2020-10-16 11:24:03,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:24:03,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304459701] [2020-10-16 11:24:03,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:24:03,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:03,168 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-16 11:24:03,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304459701] [2020-10-16 11:24:03,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480488561] [2020-10-16 11:24:03,169 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:24:03,240 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 11:24:03,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:24:03,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 11:24:03,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:24:03,260 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-16 11:24:03,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:24:03,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 11:24:03,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377042377] [2020-10-16 11:24:03,261 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 11:24:03,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:24:03,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 11:24:03,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-16 11:24:03,261 INFO L87 Difference]: Start difference. First operand 9291 states and 42295 transitions. Second operand 11 states. [2020-10-16 11:24:03,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:24:03,925 INFO L93 Difference]: Finished difference Result 29267 states and 112142 transitions. [2020-10-16 11:24:03,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:24:03,925 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-16 11:24:03,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:24:03,989 INFO L225 Difference]: With dead ends: 29267 [2020-10-16 11:24:03,989 INFO L226 Difference]: Without dead ends: 29245 [2020-10-16 11:24:03,989 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 11:24:04,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29245 states. [2020-10-16 11:24:04,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29245 to 9288. [2020-10-16 11:24:04,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9288 states. [2020-10-16 11:24:04,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9288 states to 9288 states and 42242 transitions. [2020-10-16 11:24:04,402 INFO L78 Accepts]: Start accepts. Automaton has 9288 states and 42242 transitions. Word has length 25 [2020-10-16 11:24:04,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:24:04,402 INFO L481 AbstractCegarLoop]: Abstraction has 9288 states and 42242 transitions. [2020-10-16 11:24:04,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 11:24:04,403 INFO L276 IsEmpty]: Start isEmpty. Operand 9288 states and 42242 transitions. [2020-10-16 11:24:04,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:24:04,405 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:24:04,406 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:24:04,606 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2020-10-16 11:24:04,607 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]=== [2020-10-16 11:24:04,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:24:04,607 INFO L82 PathProgramCache]: Analyzing trace with hash -379945027, now seen corresponding path program 2 times [2020-10-16 11:24:04,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:24:04,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256051056] [2020-10-16 11:24:04,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:24:04,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:04,653 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-16 11:24:04,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256051056] [2020-10-16 11:24:04,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84313004] [2020-10-16 11:24:04,654 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:24:04,726 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 11:24:04,726 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:24:04,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 11:24:04,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:24:04,748 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-16 11:24:04,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:24:04,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 11:24:04,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174715193] [2020-10-16 11:24:04,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 11:24:04,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:24:04,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 11:24:04,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-16 11:24:04,749 INFO L87 Difference]: Start difference. First operand 9288 states and 42242 transitions. Second operand 11 states. [2020-10-16 11:24:05,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:24:05,553 INFO L93 Difference]: Finished difference Result 28920 states and 110796 transitions. [2020-10-16 11:24:05,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:24:05,554 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-16 11:24:05,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:24:05,615 INFO L225 Difference]: With dead ends: 28920 [2020-10-16 11:24:05,615 INFO L226 Difference]: Without dead ends: 28898 [2020-10-16 11:24:05,615 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 11:24:05,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28898 states. [2020-10-16 11:24:05,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28898 to 9176. [2020-10-16 11:24:05,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9176 states. [2020-10-16 11:24:06,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9176 states to 9176 states and 41695 transitions. [2020-10-16 11:24:06,017 INFO L78 Accepts]: Start accepts. Automaton has 9176 states and 41695 transitions. Word has length 25 [2020-10-16 11:24:06,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:24:06,017 INFO L481 AbstractCegarLoop]: Abstraction has 9176 states and 41695 transitions. [2020-10-16 11:24:06,017 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 11:24:06,018 INFO L276 IsEmpty]: Start isEmpty. Operand 9176 states and 41695 transitions. [2020-10-16 11:24:06,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:24:06,021 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:24:06,021 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:24:06,222 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:24:06,222 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]=== [2020-10-16 11:24:06,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:24:06,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1211690581, now seen corresponding path program 3 times [2020-10-16 11:24:06,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:24:06,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187322106] [2020-10-16 11:24:06,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:24:06,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:06,272 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 11:24:06,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187322106] [2020-10-16 11:24:06,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603443216] [2020-10-16 11:24:06,273 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:24:06,349 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-16 11:24:06,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:24:06,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 11:24:06,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:24:06,379 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 11:24:06,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:24:06,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 11:24:06,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701288551] [2020-10-16 11:24:06,380 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 11:24:06,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:24:06,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 11:24:06,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-16 11:24:06,381 INFO L87 Difference]: Start difference. First operand 9176 states and 41695 transitions. Second operand 11 states. [2020-10-16 11:24:07,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:24:07,049 INFO L93 Difference]: Finished difference Result 29038 states and 111216 transitions. [2020-10-16 11:24:07,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:24:07,049 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-16 11:24:07,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:24:07,114 INFO L225 Difference]: With dead ends: 29038 [2020-10-16 11:24:07,114 INFO L226 Difference]: Without dead ends: 29018 [2020-10-16 11:24:07,115 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 11:24:07,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29018 states. [2020-10-16 11:24:07,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29018 to 9000. [2020-10-16 11:24:07,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9000 states. [2020-10-16 11:24:07,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9000 states to 9000 states and 40897 transitions. [2020-10-16 11:24:07,528 INFO L78 Accepts]: Start accepts. Automaton has 9000 states and 40897 transitions. Word has length 25 [2020-10-16 11:24:07,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:24:07,528 INFO L481 AbstractCegarLoop]: Abstraction has 9000 states and 40897 transitions. [2020-10-16 11:24:07,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 11:24:07,528 INFO L276 IsEmpty]: Start isEmpty. Operand 9000 states and 40897 transitions. [2020-10-16 11:24:07,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:24:07,531 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:24:07,532 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:24:07,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2020-10-16 11:24:07,747 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]=== [2020-10-16 11:24:07,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:24:07,747 INFO L82 PathProgramCache]: Analyzing trace with hash 1201691221, now seen corresponding path program 4 times [2020-10-16 11:24:07,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:24:07,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081293540] [2020-10-16 11:24:07,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:24:07,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:07,796 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 11:24:07,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081293540] [2020-10-16 11:24:07,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426386245] [2020-10-16 11:24:07,797 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:24:07,870 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 11:24:07,870 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:24:07,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 11:24:07,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:24:07,893 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 11:24:07,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:24:07,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 11:24:07,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758525290] [2020-10-16 11:24:07,894 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 11:24:07,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:24:07,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 11:24:07,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-16 11:24:07,894 INFO L87 Difference]: Start difference. First operand 9000 states and 40897 transitions. Second operand 11 states. [2020-10-16 11:24:08,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:24:08,636 INFO L93 Difference]: Finished difference Result 29283 states and 112236 transitions. [2020-10-16 11:24:08,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:24:08,636 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-16 11:24:08,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:24:08,700 INFO L225 Difference]: With dead ends: 29283 [2020-10-16 11:24:08,701 INFO L226 Difference]: Without dead ends: 29261 [2020-10-16 11:24:08,701 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 11:24:08,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29261 states. [2020-10-16 11:24:09,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29261 to 8997. [2020-10-16 11:24:09,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8997 states. [2020-10-16 11:24:09,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8997 states to 8997 states and 40842 transitions. [2020-10-16 11:24:09,302 INFO L78 Accepts]: Start accepts. Automaton has 8997 states and 40842 transitions. Word has length 25 [2020-10-16 11:24:09,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:24:09,302 INFO L481 AbstractCegarLoop]: Abstraction has 8997 states and 40842 transitions. [2020-10-16 11:24:09,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 11:24:09,302 INFO L276 IsEmpty]: Start isEmpty. Operand 8997 states and 40842 transitions. [2020-10-16 11:24:09,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:24:09,305 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:24:09,306 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:24:09,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:24:09,512 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]=== [2020-10-16 11:24:09,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:24:09,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1201697793, now seen corresponding path program 1 times [2020-10-16 11:24:09,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:24:09,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717781651] [2020-10-16 11:24:09,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:24:09,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:09,563 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 11:24:09,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717781651] [2020-10-16 11:24:09,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776867596] [2020-10-16 11:24:09,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:24:09,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:09,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 11:24:09,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:24:09,655 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 11:24:09,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:24:09,655 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 11:24:09,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189890105] [2020-10-16 11:24:09,656 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 11:24:09,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:24:09,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 11:24:09,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-16 11:24:09,656 INFO L87 Difference]: Start difference. First operand 8997 states and 40842 transitions. Second operand 11 states. [2020-10-16 11:24:10,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:24:10,400 INFO L93 Difference]: Finished difference Result 29105 states and 111801 transitions. [2020-10-16 11:24:10,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:24:10,400 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-16 11:24:10,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:24:10,464 INFO L225 Difference]: With dead ends: 29105 [2020-10-16 11:24:10,465 INFO L226 Difference]: Without dead ends: 29085 [2020-10-16 11:24:10,465 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 11:24:10,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29085 states. [2020-10-16 11:24:10,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29085 to 8955. [2020-10-16 11:24:10,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8955 states. [2020-10-16 11:24:10,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8955 states to 8955 states and 40593 transitions. [2020-10-16 11:24:10,866 INFO L78 Accepts]: Start accepts. Automaton has 8955 states and 40593 transitions. Word has length 25 [2020-10-16 11:24:10,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:24:10,866 INFO L481 AbstractCegarLoop]: Abstraction has 8955 states and 40593 transitions. [2020-10-16 11:24:10,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 11:24:10,867 INFO L276 IsEmpty]: Start isEmpty. Operand 8955 states and 40593 transitions. [2020-10-16 11:24:10,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:24:10,870 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:24:10,870 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:24:11,070 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2020-10-16 11:24:11,071 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]=== [2020-10-16 11:24:11,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:24:11,071 INFO L82 PathProgramCache]: Analyzing trace with hash 1218006273, now seen corresponding path program 2 times [2020-10-16 11:24:11,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:24:11,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614614530] [2020-10-16 11:24:11,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:24:11,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:11,118 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 11:24:11,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614614530] [2020-10-16 11:24:11,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001719141] [2020-10-16 11:24:11,118 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:24:11,191 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 11:24:11,191 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:24:11,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 11:24:11,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:24:11,210 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 11:24:11,211 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:24:11,211 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 11:24:11,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802064044] [2020-10-16 11:24:11,211 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 11:24:11,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:24:11,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 11:24:11,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-16 11:24:11,212 INFO L87 Difference]: Start difference. First operand 8955 states and 40593 transitions. Second operand 11 states. [2020-10-16 11:24:11,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:24:11,921 INFO L93 Difference]: Finished difference Result 28806 states and 110558 transitions. [2020-10-16 11:24:11,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:24:11,921 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-16 11:24:11,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:24:11,986 INFO L225 Difference]: With dead ends: 28806 [2020-10-16 11:24:11,986 INFO L226 Difference]: Without dead ends: 28779 [2020-10-16 11:24:11,986 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 11:24:12,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28779 states. [2020-10-16 11:24:12,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28779 to 8841. [2020-10-16 11:24:12,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8841 states. [2020-10-16 11:24:12,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8841 states to 8841 states and 40062 transitions. [2020-10-16 11:24:12,385 INFO L78 Accepts]: Start accepts. Automaton has 8841 states and 40062 transitions. Word has length 25 [2020-10-16 11:24:12,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:24:12,385 INFO L481 AbstractCegarLoop]: Abstraction has 8841 states and 40062 transitions. [2020-10-16 11:24:12,386 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 11:24:12,386 INFO L276 IsEmpty]: Start isEmpty. Operand 8841 states and 40062 transitions. [2020-10-16 11:24:12,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:24:12,390 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:24:12,390 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:24:12,596 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:24:12,597 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]=== [2020-10-16 11:24:12,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:24:12,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1980442581, now seen corresponding path program 3 times [2020-10-16 11:24:12,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:24:12,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880850771] [2020-10-16 11:24:12,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:24:12,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:12,659 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-16 11:24:12,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880850771] [2020-10-16 11:24:12,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86687690] [2020-10-16 11:24:12,660 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:24:12,773 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 11:24:12,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:24:12,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 11:24:12,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:24:12,807 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-16 11:24:12,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:24:12,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 11:24:12,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143834658] [2020-10-16 11:24:12,809 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 11:24:12,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:24:12,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 11:24:12,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-16 11:24:12,810 INFO L87 Difference]: Start difference. First operand 8841 states and 40062 transitions. Second operand 11 states. [2020-10-16 11:24:13,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:24:13,724 INFO L93 Difference]: Finished difference Result 28636 states and 109852 transitions. [2020-10-16 11:24:13,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:24:13,725 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-16 11:24:13,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:24:13,786 INFO L225 Difference]: With dead ends: 28636 [2020-10-16 11:24:13,787 INFO L226 Difference]: Without dead ends: 28616 [2020-10-16 11:24:13,787 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 11:24:13,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28616 states. [2020-10-16 11:24:14,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28616 to 8702. [2020-10-16 11:24:14,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8702 states. [2020-10-16 11:24:14,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8702 states to 8702 states and 39438 transitions. [2020-10-16 11:24:14,173 INFO L78 Accepts]: Start accepts. Automaton has 8702 states and 39438 transitions. Word has length 25 [2020-10-16 11:24:14,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:24:14,174 INFO L481 AbstractCegarLoop]: Abstraction has 8702 states and 39438 transitions. [2020-10-16 11:24:14,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 11:24:14,174 INFO L276 IsEmpty]: Start isEmpty. Operand 8702 states and 39438 transitions. [2020-10-16 11:24:14,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:24:14,177 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:24:14,177 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:24:14,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2020-10-16 11:24:14,378 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]=== [2020-10-16 11:24:14,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:24:14,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1965964155, now seen corresponding path program 3 times [2020-10-16 11:24:14,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:24:14,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557822243] [2020-10-16 11:24:14,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:24:14,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:14,425 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-16 11:24:14,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557822243] [2020-10-16 11:24:14,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758968473] [2020-10-16 11:24:14,426 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:24:14,536 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 11:24:14,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:24:14,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 11:24:14,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:24:14,569 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-16 11:24:14,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:24:14,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 11:24:14,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510383426] [2020-10-16 11:24:14,573 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 11:24:14,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:24:14,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 11:24:14,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-16 11:24:14,575 INFO L87 Difference]: Start difference. First operand 8702 states and 39438 transitions. Second operand 11 states. [2020-10-16 11:24:15,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:24:15,435 INFO L93 Difference]: Finished difference Result 28297 states and 108461 transitions. [2020-10-16 11:24:15,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:24:15,435 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-16 11:24:15,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:24:15,513 INFO L225 Difference]: With dead ends: 28297 [2020-10-16 11:24:15,513 INFO L226 Difference]: Without dead ends: 28277 [2020-10-16 11:24:15,513 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 11:24:15,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28277 states. [2020-10-16 11:24:15,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28277 to 8596. [2020-10-16 11:24:15,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8596 states. [2020-10-16 11:24:15,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8596 states to 8596 states and 38978 transitions. [2020-10-16 11:24:15,902 INFO L78 Accepts]: Start accepts. Automaton has 8596 states and 38978 transitions. Word has length 25 [2020-10-16 11:24:15,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:24:15,902 INFO L481 AbstractCegarLoop]: Abstraction has 8596 states and 38978 transitions. [2020-10-16 11:24:15,902 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 11:24:15,902 INFO L276 IsEmpty]: Start isEmpty. Operand 8596 states and 38978 transitions. [2020-10-16 11:24:15,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:24:15,905 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:24:15,905 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:24:16,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:24:16,106 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]=== [2020-10-16 11:24:16,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:24:16,107 INFO L82 PathProgramCache]: Analyzing trace with hash 1970443221, now seen corresponding path program 4 times [2020-10-16 11:24:16,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:24:16,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358344221] [2020-10-16 11:24:16,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:24:16,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:16,152 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-16 11:24:16,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358344221] [2020-10-16 11:24:16,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630565329] [2020-10-16 11:24:16,153 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:24:16,227 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 11:24:16,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:24:16,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 11:24:16,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:24:16,258 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-16 11:24:16,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:24:16,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 11:24:16,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651138897] [2020-10-16 11:24:16,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 11:24:16,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:24:16,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 11:24:16,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-16 11:24:16,259 INFO L87 Difference]: Start difference. First operand 8596 states and 38978 transitions. Second operand 11 states. [2020-10-16 11:24:16,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:24:16,924 INFO L93 Difference]: Finished difference Result 28565 states and 109596 transitions. [2020-10-16 11:24:16,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:24:16,924 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-16 11:24:16,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:24:16,985 INFO L225 Difference]: With dead ends: 28565 [2020-10-16 11:24:16,985 INFO L226 Difference]: Without dead ends: 28538 [2020-10-16 11:24:16,986 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 11:24:17,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28538 states. [2020-10-16 11:24:17,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28538 to 8563. [2020-10-16 11:24:17,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8563 states. [2020-10-16 11:24:17,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8563 states to 8563 states and 38809 transitions. [2020-10-16 11:24:17,371 INFO L78 Accepts]: Start accepts. Automaton has 8563 states and 38809 transitions. Word has length 25 [2020-10-16 11:24:17,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:24:17,371 INFO L481 AbstractCegarLoop]: Abstraction has 8563 states and 38809 transitions. [2020-10-16 11:24:17,371 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 11:24:17,371 INFO L276 IsEmpty]: Start isEmpty. Operand 8563 states and 38809 transitions. [2020-10-16 11:24:17,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:24:17,374 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:24:17,374 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:24:17,575 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2020-10-16 11:24:17,575 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]=== [2020-10-16 11:24:17,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:24:17,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1970428155, now seen corresponding path program 4 times [2020-10-16 11:24:17,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:24:17,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976109817] [2020-10-16 11:24:17,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:24:17,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:17,621 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-16 11:24:17,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976109817] [2020-10-16 11:24:17,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874703770] [2020-10-16 11:24:17,621 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:24:17,695 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 11:24:17,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:24:17,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 11:24:17,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:24:17,714 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-16 11:24:17,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:24:17,715 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 11:24:17,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689503749] [2020-10-16 11:24:17,715 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 11:24:17,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:24:17,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 11:24:17,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-16 11:24:17,716 INFO L87 Difference]: Start difference. First operand 8563 states and 38809 transitions. Second operand 11 states. [2020-10-16 11:24:18,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:24:18,460 INFO L93 Difference]: Finished difference Result 28213 states and 108237 transitions. [2020-10-16 11:24:18,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:24:18,460 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-16 11:24:18,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:24:18,519 INFO L225 Difference]: With dead ends: 28213 [2020-10-16 11:24:18,519 INFO L226 Difference]: Without dead ends: 28186 [2020-10-16 11:24:18,519 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 11:24:18,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28186 states. [2020-10-16 11:24:18,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28186 to 8421. [2020-10-16 11:24:18,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8421 states. [2020-10-16 11:24:18,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8421 states to 8421 states and 38146 transitions. [2020-10-16 11:24:18,890 INFO L78 Accepts]: Start accepts. Automaton has 8421 states and 38146 transitions. Word has length 25 [2020-10-16 11:24:18,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:24:18,890 INFO L481 AbstractCegarLoop]: Abstraction has 8421 states and 38146 transitions. [2020-10-16 11:24:18,890 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 11:24:18,890 INFO L276 IsEmpty]: Start isEmpty. Operand 8421 states and 38146 transitions. [2020-10-16 11:24:18,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:24:18,893 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:24:18,893 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:24:19,094 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:24:19,094 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]=== [2020-10-16 11:24:19,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:24:19,095 INFO L82 PathProgramCache]: Analyzing trace with hash -1943046054, now seen corresponding path program 1 times [2020-10-16 11:24:19,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:24:19,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246763930] [2020-10-16 11:24:19,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:24:19,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:19,117 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-16 11:24:19,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246763930] [2020-10-16 11:24:19,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:24:19,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:24:19,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074512514] [2020-10-16 11:24:19,118 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:24:19,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:24:19,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:24:19,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:24:19,119 INFO L87 Difference]: Start difference. First operand 8421 states and 38146 transitions. Second operand 5 states. [2020-10-16 11:24:19,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:24:19,279 INFO L93 Difference]: Finished difference Result 13647 states and 59401 transitions. [2020-10-16 11:24:19,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 11:24:19,279 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-10-16 11:24:19,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:24:19,333 INFO L225 Difference]: With dead ends: 13647 [2020-10-16 11:24:19,333 INFO L226 Difference]: Without dead ends: 13615 [2020-10-16 11:24:19,334 INFO L677 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 [2020-10-16 11:24:19,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13615 states. [2020-10-16 11:24:19,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13615 to 9928. [2020-10-16 11:24:19,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9928 states. [2020-10-16 11:24:19,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9928 states to 9928 states and 44651 transitions. [2020-10-16 11:24:19,782 INFO L78 Accepts]: Start accepts. Automaton has 9928 states and 44651 transitions. Word has length 25 [2020-10-16 11:24:19,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:24:19,783 INFO L481 AbstractCegarLoop]: Abstraction has 9928 states and 44651 transitions. [2020-10-16 11:24:19,783 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:24:19,783 INFO L276 IsEmpty]: Start isEmpty. Operand 9928 states and 44651 transitions. [2020-10-16 11:24:19,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:24:19,788 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:24:19,788 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:24:19,788 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2020-10-16 11:24:19,788 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]=== [2020-10-16 11:24:19,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:24:19,789 INFO L82 PathProgramCache]: Analyzing trace with hash 1440199159, now seen corresponding path program 5 times [2020-10-16 11:24:19,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:24:19,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774110669] [2020-10-16 11:24:19,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:24:19,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:19,853 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 11:24:19,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774110669] [2020-10-16 11:24:19,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:24:19,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 11:24:19,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513784285] [2020-10-16 11:24:19,854 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 11:24:19,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:24:19,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 11:24:19,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:24:19,855 INFO L87 Difference]: Start difference. First operand 9928 states and 44651 transitions. Second operand 9 states. [2020-10-16 11:24:20,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:24:20,488 INFO L93 Difference]: Finished difference Result 31816 states and 123346 transitions. [2020-10-16 11:24:20,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:24:20,488 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-16 11:24:20,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:24:20,556 INFO L225 Difference]: With dead ends: 31816 [2020-10-16 11:24:20,556 INFO L226 Difference]: Without dead ends: 31790 [2020-10-16 11:24:20,556 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 11:24:20,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31790 states. [2020-10-16 11:24:20,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31790 to 9766. [2020-10-16 11:24:20,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9766 states. [2020-10-16 11:24:20,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9766 states to 9766 states and 43873 transitions. [2020-10-16 11:24:20,998 INFO L78 Accepts]: Start accepts. Automaton has 9766 states and 43873 transitions. Word has length 25 [2020-10-16 11:24:20,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:24:20,998 INFO L481 AbstractCegarLoop]: Abstraction has 9766 states and 43873 transitions. [2020-10-16 11:24:20,998 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 11:24:20,998 INFO L276 IsEmpty]: Start isEmpty. Operand 9766 states and 43873 transitions. [2020-10-16 11:24:21,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:24:21,001 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:24:21,001 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:24:21,001 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2020-10-16 11:24:21,001 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]=== [2020-10-16 11:24:21,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:24:21,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1440220797, now seen corresponding path program 5 times [2020-10-16 11:24:21,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:24:21,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629294828] [2020-10-16 11:24:21,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:24:21,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:21,052 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 11:24:21,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629294828] [2020-10-16 11:24:21,053 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:24:21,053 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 11:24:21,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042476770] [2020-10-16 11:24:21,053 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 11:24:21,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:24:21,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 11:24:21,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:24:21,054 INFO L87 Difference]: Start difference. First operand 9766 states and 43873 transitions. Second operand 9 states. [2020-10-16 11:24:21,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:24:21,687 INFO L93 Difference]: Finished difference Result 31277 states and 121098 transitions. [2020-10-16 11:24:21,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:24:21,687 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-16 11:24:21,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:24:21,753 INFO L225 Difference]: With dead ends: 31277 [2020-10-16 11:24:21,754 INFO L226 Difference]: Without dead ends: 31251 [2020-10-16 11:24:21,754 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 11:24:21,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31251 states. [2020-10-16 11:24:22,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31251 to 9592. [2020-10-16 11:24:22,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9592 states. [2020-10-16 11:24:22,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9592 states to 9592 states and 43051 transitions. [2020-10-16 11:24:22,353 INFO L78 Accepts]: Start accepts. Automaton has 9592 states and 43051 transitions. Word has length 25 [2020-10-16 11:24:22,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:24:22,353 INFO L481 AbstractCegarLoop]: Abstraction has 9592 states and 43051 transitions. [2020-10-16 11:24:22,353 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 11:24:22,353 INFO L276 IsEmpty]: Start isEmpty. Operand 9592 states and 43051 transitions. [2020-10-16 11:24:22,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:24:22,356 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:24:22,356 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:24:22,356 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2020-10-16 11:24:22,356 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]=== [2020-10-16 11:24:22,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:24:22,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1425735799, now seen corresponding path program 6 times [2020-10-16 11:24:22,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:24:22,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25847971] [2020-10-16 11:24:22,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:24:22,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:22,410 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 11:24:22,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25847971] [2020-10-16 11:24:22,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:24:22,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 11:24:22,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530865718] [2020-10-16 11:24:22,412 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 11:24:22,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:24:22,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 11:24:22,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:24:22,412 INFO L87 Difference]: Start difference. First operand 9592 states and 43051 transitions. Second operand 9 states. [2020-10-16 11:24:23,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:24:23,064 INFO L93 Difference]: Finished difference Result 30952 states and 119650 transitions. [2020-10-16 11:24:23,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:24:23,065 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-16 11:24:23,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:24:23,135 INFO L225 Difference]: With dead ends: 30952 [2020-10-16 11:24:23,136 INFO L226 Difference]: Without dead ends: 30919 [2020-10-16 11:24:23,136 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 11:24:23,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30919 states. [2020-10-16 11:24:23,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30919 to 9246. [2020-10-16 11:24:23,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9246 states. [2020-10-16 11:24:23,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9246 states to 9246 states and 41509 transitions. [2020-10-16 11:24:23,575 INFO L78 Accepts]: Start accepts. Automaton has 9246 states and 41509 transitions. Word has length 25 [2020-10-16 11:24:23,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:24:23,575 INFO L481 AbstractCegarLoop]: Abstraction has 9246 states and 41509 transitions. [2020-10-16 11:24:23,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 11:24:23,576 INFO L276 IsEmpty]: Start isEmpty. Operand 9246 states and 41509 transitions. [2020-10-16 11:24:23,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:24:23,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:24:23,578 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:24:23,578 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2020-10-16 11:24:23,579 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]=== [2020-10-16 11:24:23,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:24:23,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1425742371, now seen corresponding path program 5 times [2020-10-16 11:24:23,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:24:23,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332913390] [2020-10-16 11:24:23,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:24:23,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:23,629 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 11:24:23,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332913390] [2020-10-16 11:24:23,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:24:23,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 11:24:23,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102779876] [2020-10-16 11:24:23,630 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 11:24:23,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:24:23,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 11:24:23,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:24:23,630 INFO L87 Difference]: Start difference. First operand 9246 states and 41509 transitions. Second operand 9 states. [2020-10-16 11:24:24,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:24:24,341 INFO L93 Difference]: Finished difference Result 30541 states and 117947 transitions. [2020-10-16 11:24:24,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:24:24,342 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-16 11:24:24,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:24:24,410 INFO L225 Difference]: With dead ends: 30541 [2020-10-16 11:24:24,411 INFO L226 Difference]: Without dead ends: 30515 [2020-10-16 11:24:24,411 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 11:24:24,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30515 states. [2020-10-16 11:24:24,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30515 to 9136. [2020-10-16 11:24:24,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9136 states. [2020-10-16 11:24:24,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9136 states to 9136 states and 40999 transitions. [2020-10-16 11:24:24,843 INFO L78 Accepts]: Start accepts. Automaton has 9136 states and 40999 transitions. Word has length 25 [2020-10-16 11:24:24,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:24:24,843 INFO L481 AbstractCegarLoop]: Abstraction has 9136 states and 40999 transitions. [2020-10-16 11:24:24,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 11:24:24,843 INFO L276 IsEmpty]: Start isEmpty. Operand 9136 states and 40999 transitions. [2020-10-16 11:24:24,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:24:24,846 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:24:24,846 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:24:24,846 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2020-10-16 11:24:24,846 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]=== [2020-10-16 11:24:24,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:24:24,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1446529917, now seen corresponding path program 6 times [2020-10-16 11:24:24,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:24:24,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390048136] [2020-10-16 11:24:24,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:24:24,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:24,898 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 11:24:24,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390048136] [2020-10-16 11:24:24,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:24:24,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 11:24:24,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589760548] [2020-10-16 11:24:24,899 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 11:24:24,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:24:24,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 11:24:24,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:24:24,899 INFO L87 Difference]: Start difference. First operand 9136 states and 40999 transitions. Second operand 9 states. [2020-10-16 11:24:25,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:24:25,608 INFO L93 Difference]: Finished difference Result 30263 states and 116773 transitions. [2020-10-16 11:24:25,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:24:25,609 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-16 11:24:25,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:24:25,677 INFO L225 Difference]: With dead ends: 30263 [2020-10-16 11:24:25,677 INFO L226 Difference]: Without dead ends: 30230 [2020-10-16 11:24:25,677 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 11:24:25,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30230 states. [2020-10-16 11:24:26,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30230 to 8877. [2020-10-16 11:24:26,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8877 states. [2020-10-16 11:24:26,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8877 states to 8877 states and 39872 transitions. [2020-10-16 11:24:26,139 INFO L78 Accepts]: Start accepts. Automaton has 8877 states and 39872 transitions. Word has length 25 [2020-10-16 11:24:26,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:24:26,140 INFO L481 AbstractCegarLoop]: Abstraction has 8877 states and 39872 transitions. [2020-10-16 11:24:26,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 11:24:26,140 INFO L276 IsEmpty]: Start isEmpty. Operand 8877 states and 39872 transitions. [2020-10-16 11:24:26,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:24:26,143 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:24:26,143 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:24:26,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2020-10-16 11:24:26,144 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]=== [2020-10-16 11:24:26,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:24:26,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1446514851, now seen corresponding path program 6 times [2020-10-16 11:24:26,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:24:26,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272517203] [2020-10-16 11:24:26,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:24:26,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:26,314 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 11:24:26,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272517203] [2020-10-16 11:24:26,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:24:26,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 11:24:26,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181561280] [2020-10-16 11:24:26,315 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 11:24:26,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:24:26,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 11:24:26,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:24:26,316 INFO L87 Difference]: Start difference. First operand 8877 states and 39872 transitions. Second operand 9 states. [2020-10-16 11:24:27,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:24:27,021 INFO L93 Difference]: Finished difference Result 29856 states and 115140 transitions. [2020-10-16 11:24:27,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:24:27,022 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-16 11:24:27,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:24:27,087 INFO L225 Difference]: With dead ends: 29856 [2020-10-16 11:24:27,087 INFO L226 Difference]: Without dead ends: 29823 [2020-10-16 11:24:27,087 INFO L677 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 [2020-10-16 11:24:27,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29823 states. [2020-10-16 11:24:27,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29823 to 8560. [2020-10-16 11:24:27,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8560 states. [2020-10-16 11:24:27,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8560 states to 8560 states and 38495 transitions. [2020-10-16 11:24:27,500 INFO L78 Accepts]: Start accepts. Automaton has 8560 states and 38495 transitions. Word has length 25 [2020-10-16 11:24:27,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:24:27,501 INFO L481 AbstractCegarLoop]: Abstraction has 8560 states and 38495 transitions. [2020-10-16 11:24:27,501 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 11:24:27,501 INFO L276 IsEmpty]: Start isEmpty. Operand 8560 states and 38495 transitions. [2020-10-16 11:24:27,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-16 11:24:27,504 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:24:27,504 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:24:27,504 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2020-10-16 11:24:27,505 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]=== [2020-10-16 11:24:27,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:24:27,505 INFO L82 PathProgramCache]: Analyzing trace with hash -110415564, now seen corresponding path program 1 times [2020-10-16 11:24:27,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:24:27,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283139012] [2020-10-16 11:24:27,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:24:27,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 11:24:27,513 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 11:24:27,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 11:24:27,518 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 11:24:27,526 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 11:24:27,526 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 11:24:27,527 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2020-10-16 11:24:27,527 WARN L371 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 11:24:27,528 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2020-10-16 11:24:27,549 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,549 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,550 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,550 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,550 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,550 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,550 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,550 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,551 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,551 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,551 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,551 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,551 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,551 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,551 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,552 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,552 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,552 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,552 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,552 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,552 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,552 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,552 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,553 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,553 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,553 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,553 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,553 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,553 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,553 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,553 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,554 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,554 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,554 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,554 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,554 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,554 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,555 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,555 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,555 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,555 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,555 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,555 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,555 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,556 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,556 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,556 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,556 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,556 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,556 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,556 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,556 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,557 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,557 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,557 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,557 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,557 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,557 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,557 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,558 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,558 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,558 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,558 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,558 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,558 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,558 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,559 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,559 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,559 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,559 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,559 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,559 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,559 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,559 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,560 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,560 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,560 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,560 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,560 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,560 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,561 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,561 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,561 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,561 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,561 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,561 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,561 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,561 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,562 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,562 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,562 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,562 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,562 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,562 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,562 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,563 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,563 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,563 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,563 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,563 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,563 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,563 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,564 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,564 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,564 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,564 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,564 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,564 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,564 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,565 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,565 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,565 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,565 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,565 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,566 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,566 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,566 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,566 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,566 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,566 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,566 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,567 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,567 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,567 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,567 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,567 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,567 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,568 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,568 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,568 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,568 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,569 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,569 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,570 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,570 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,570 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,571 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,571 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,571 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,571 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,571 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,572 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,573 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,573 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,573 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,573 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,574 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,574 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,574 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,574 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,575 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,576 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,576 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,576 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,576 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,576 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,577 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,577 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,578 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,578 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,578 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,578 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,579 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,579 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,579 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,579 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,580 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,580 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,581 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,581 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,581 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,582 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,582 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,582 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,583 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,583 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,583 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,583 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,583 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,584 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,585 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,585 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,585 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,585 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,585 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,585 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,586 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,587 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,587 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,587 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,587 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,587 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:27,588 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 11:24:27,588 INFO L253 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-10-16 11:24:27,589 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 11:24:27,589 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 11:24:27,589 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 11:24:27,589 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 11:24:27,589 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 11:24:27,589 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 11:24:27,589 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 11:24:27,589 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 11:24:27,591 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 11:24:27,591 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 160 places, 141 transitions, 402 flow [2020-10-16 11:24:27,591 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 160 places, 141 transitions, 402 flow [2020-10-16 11:24:27,592 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 160 places, 141 transitions, 402 flow [2020-10-16 11:24:27,612 INFO L129 PetriNetUnfolder]: 8/171 cut-off events. [2020-10-16 11:24:27,613 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-10-16 11:24:27,615 INFO L80 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 171 events. 8/171 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 310 event pairs, 0 based on Foata normal form. 0/155 useless extension candidates. Maximal degree in co-relation 206. Up to 14 conditions per place. [2020-10-16 11:24:27,621 INFO L117 LiptonReduction]: Number of co-enabled transitions 3612 [2020-10-16 11:24:29,391 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-10-16 11:24:29,676 INFO L132 LiptonReduction]: Checked pairs total: 5372 [2020-10-16 11:24:29,676 INFO L134 LiptonReduction]: Total number of compositions: 134 [2020-10-16 11:24:29,677 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 71 places, 45 transitions, 210 flow [2020-10-16 11:24:31,196 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 18584 states. [2020-10-16 11:24:31,196 INFO L276 IsEmpty]: Start isEmpty. Operand 18584 states. [2020-10-16 11:24:31,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-16 11:24:31,196 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:24:31,196 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-16 11:24:31,196 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]=== [2020-10-16 11:24:31,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:24:31,197 INFO L82 PathProgramCache]: Analyzing trace with hash 1291919, now seen corresponding path program 1 times [2020-10-16 11:24:31,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:24:31,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593327863] [2020-10-16 11:24:31,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:24:31,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:31,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:24:31,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593327863] [2020-10-16 11:24:31,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:24:31,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 11:24:31,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472485337] [2020-10-16 11:24:31,205 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:24:31,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:24:31,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:24:31,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:24:31,205 INFO L87 Difference]: Start difference. First operand 18584 states. Second operand 3 states. [2020-10-16 11:24:31,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:24:31,346 INFO L93 Difference]: Finished difference Result 17885 states and 92755 transitions. [2020-10-16 11:24:31,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:24:31,347 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-16 11:24:31,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:24:31,397 INFO L225 Difference]: With dead ends: 17885 [2020-10-16 11:24:31,397 INFO L226 Difference]: Without dead ends: 16791 [2020-10-16 11:24:31,397 INFO L677 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 [2020-10-16 11:24:32,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16791 states. [2020-10-16 11:24:32,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16791 to 16791. [2020-10-16 11:24:32,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16791 states. [2020-10-16 11:24:32,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16791 states to 16791 states and 86558 transitions. [2020-10-16 11:24:32,354 INFO L78 Accepts]: Start accepts. Automaton has 16791 states and 86558 transitions. Word has length 3 [2020-10-16 11:24:32,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:24:32,354 INFO L481 AbstractCegarLoop]: Abstraction has 16791 states and 86558 transitions. [2020-10-16 11:24:32,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:24:32,354 INFO L276 IsEmpty]: Start isEmpty. Operand 16791 states and 86558 transitions. [2020-10-16 11:24:32,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 11:24:32,355 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:24:32,355 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:24:32,355 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2020-10-16 11:24:32,355 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]=== [2020-10-16 11:24:32,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:24:32,355 INFO L82 PathProgramCache]: Analyzing trace with hash -1124534846, now seen corresponding path program 1 times [2020-10-16 11:24:32,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:24:32,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837838757] [2020-10-16 11:24:32,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:24:32,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:32,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:24:32,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837838757] [2020-10-16 11:24:32,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:24:32,381 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:24:32,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732720432] [2020-10-16 11:24:32,382 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:24:32,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:24:32,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:24:32,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:24:32,382 INFO L87 Difference]: Start difference. First operand 16791 states and 86558 transitions. Second operand 5 states. [2020-10-16 11:24:32,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:24:32,621 INFO L93 Difference]: Finished difference Result 30985 states and 150574 transitions. [2020-10-16 11:24:32,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 11:24:32,622 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-16 11:24:32,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:24:32,708 INFO L225 Difference]: With dead ends: 30985 [2020-10-16 11:24:32,709 INFO L226 Difference]: Without dead ends: 30977 [2020-10-16 11:24:32,709 INFO L677 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 [2020-10-16 11:24:33,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30977 states. [2020-10-16 11:24:33,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30977 to 19868. [2020-10-16 11:24:33,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19868 states. [2020-10-16 11:24:33,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19868 states to 19868 states and 103363 transitions. [2020-10-16 11:24:33,655 INFO L78 Accepts]: Start accepts. Automaton has 19868 states and 103363 transitions. Word has length 9 [2020-10-16 11:24:33,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:24:33,655 INFO L481 AbstractCegarLoop]: Abstraction has 19868 states and 103363 transitions. [2020-10-16 11:24:33,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:24:33,655 INFO L276 IsEmpty]: Start isEmpty. Operand 19868 states and 103363 transitions. [2020-10-16 11:24:33,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 11:24:33,655 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:24:33,655 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:24:33,656 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2020-10-16 11:24:33,656 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]=== [2020-10-16 11:24:33,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:24:33,656 INFO L82 PathProgramCache]: Analyzing trace with hash -696216523, now seen corresponding path program 1 times [2020-10-16 11:24:33,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:24:33,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759339518] [2020-10-16 11:24:33,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:24:33,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:33,688 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 11:24:33,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759339518] [2020-10-16 11:24:33,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:24:33,689 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:24:33,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788879014] [2020-10-16 11:24:33,689 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:24:33,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:24:33,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:24:33,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:24:33,690 INFO L87 Difference]: Start difference. First operand 19868 states and 103363 transitions. Second operand 5 states. [2020-10-16 11:24:33,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:24:33,930 INFO L93 Difference]: Finished difference Result 36296 states and 178836 transitions. [2020-10-16 11:24:33,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 11:24:33,931 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-16 11:24:33,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:24:34,030 INFO L225 Difference]: With dead ends: 36296 [2020-10-16 11:24:34,030 INFO L226 Difference]: Without dead ends: 36280 [2020-10-16 11:24:34,031 INFO L677 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 [2020-10-16 11:24:34,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36280 states. [2020-10-16 11:24:36,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36280 to 23806. [2020-10-16 11:24:36,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23806 states. [2020-10-16 11:24:36,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23806 states to 23806 states and 125455 transitions. [2020-10-16 11:24:36,999 INFO L78 Accepts]: Start accepts. Automaton has 23806 states and 125455 transitions. Word has length 13 [2020-10-16 11:24:36,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:24:36,999 INFO L481 AbstractCegarLoop]: Abstraction has 23806 states and 125455 transitions. [2020-10-16 11:24:36,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:24:36,999 INFO L276 IsEmpty]: Start isEmpty. Operand 23806 states and 125455 transitions. [2020-10-16 11:24:36,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 11:24:36,999 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:24:36,999 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:24:37,000 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2020-10-16 11:24:37,000 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]=== [2020-10-16 11:24:37,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:24:37,000 INFO L82 PathProgramCache]: Analyzing trace with hash -2123666531, now seen corresponding path program 1 times [2020-10-16 11:24:37,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:24:37,000 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215639189] [2020-10-16 11:24:37,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:24:37,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:37,027 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:24:37,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215639189] [2020-10-16 11:24:37,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496006700] [2020-10-16 11:24:37,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:24:37,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:37,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 11:24:37,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:24:37,127 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:24:37,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:24:37,127 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-16 11:24:37,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740089308] [2020-10-16 11:24:37,128 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 11:24:37,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:24:37,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 11:24:37,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:24:37,129 INFO L87 Difference]: Start difference. First operand 23806 states and 125455 transitions. Second operand 9 states. [2020-10-16 11:24:37,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:24:37,633 INFO L93 Difference]: Finished difference Result 56720 states and 262685 transitions. [2020-10-16 11:24:37,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:24:37,634 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-10-16 11:24:37,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:24:37,802 INFO L225 Difference]: With dead ends: 56720 [2020-10-16 11:24:37,802 INFO L226 Difference]: Without dead ends: 56704 [2020-10-16 11:24:37,803 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-10-16 11:24:38,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56704 states. [2020-10-16 11:24:39,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56704 to 23629. [2020-10-16 11:24:39,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23629 states. [2020-10-16 11:24:39,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23629 states to 23629 states and 124418 transitions. [2020-10-16 11:24:39,164 INFO L78 Accepts]: Start accepts. Automaton has 23629 states and 124418 transitions. Word has length 15 [2020-10-16 11:24:39,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:24:39,164 INFO L481 AbstractCegarLoop]: Abstraction has 23629 states and 124418 transitions. [2020-10-16 11:24:39,164 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 11:24:39,164 INFO L276 IsEmpty]: Start isEmpty. Operand 23629 states and 124418 transitions. [2020-10-16 11:24:39,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 11:24:39,165 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:24:39,165 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:24:39,365 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2020-10-16 11:24:39,366 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]=== [2020-10-16 11:24:39,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:24:39,366 INFO L82 PathProgramCache]: Analyzing trace with hash 950817645, now seen corresponding path program 2 times [2020-10-16 11:24:39,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:24:39,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754194226] [2020-10-16 11:24:39,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:24:39,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:39,398 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 11:24:39,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754194226] [2020-10-16 11:24:39,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:24:39,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 11:24:39,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67034417] [2020-10-16 11:24:39,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 11:24:39,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:24:39,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 11:24:39,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:24:39,399 INFO L87 Difference]: Start difference. First operand 23629 states and 124418 transitions. Second operand 7 states. [2020-10-16 11:24:39,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:24:39,909 INFO L93 Difference]: Finished difference Result 58078 states and 269185 transitions. [2020-10-16 11:24:39,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:24:39,910 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-16 11:24:39,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:24:42,271 INFO L225 Difference]: With dead ends: 58078 [2020-10-16 11:24:42,271 INFO L226 Difference]: Without dead ends: 58061 [2020-10-16 11:24:42,271 INFO L677 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 [2020-10-16 11:24:42,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58061 states. [2020-10-16 11:24:43,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58061 to 23109. [2020-10-16 11:24:43,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23109 states. [2020-10-16 11:24:43,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23109 states to 23109 states and 121651 transitions. [2020-10-16 11:24:43,606 INFO L78 Accepts]: Start accepts. Automaton has 23109 states and 121651 transitions. Word has length 15 [2020-10-16 11:24:43,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:24:43,606 INFO L481 AbstractCegarLoop]: Abstraction has 23109 states and 121651 transitions. [2020-10-16 11:24:43,606 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 11:24:43,606 INFO L276 IsEmpty]: Start isEmpty. Operand 23109 states and 121651 transitions. [2020-10-16 11:24:43,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 11:24:43,606 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:24:43,606 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:24:43,607 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2020-10-16 11:24:43,607 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]=== [2020-10-16 11:24:43,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:24:43,607 INFO L82 PathProgramCache]: Analyzing trace with hash -2120658652, now seen corresponding path program 1 times [2020-10-16 11:24:43,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:24:43,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942068368] [2020-10-16 11:24:43,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:24:43,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:43,637 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 11:24:43,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942068368] [2020-10-16 11:24:43,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:24:43,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:24:43,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302742234] [2020-10-16 11:24:43,639 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:24:43,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:24:43,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:24:43,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:24:43,639 INFO L87 Difference]: Start difference. First operand 23109 states and 121651 transitions. Second operand 5 states. [2020-10-16 11:24:43,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:24:43,927 INFO L93 Difference]: Finished difference Result 41885 states and 209629 transitions. [2020-10-16 11:24:43,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 11:24:43,927 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-16 11:24:43,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:24:44,053 INFO L225 Difference]: With dead ends: 41885 [2020-10-16 11:24:44,053 INFO L226 Difference]: Without dead ends: 41856 [2020-10-16 11:24:44,053 INFO L677 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 [2020-10-16 11:24:44,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41856 states. [2020-10-16 11:24:45,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41856 to 28237. [2020-10-16 11:24:45,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28237 states. [2020-10-16 11:24:45,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28237 states to 28237 states and 150261 transitions. [2020-10-16 11:24:45,319 INFO L78 Accepts]: Start accepts. Automaton has 28237 states and 150261 transitions. Word has length 17 [2020-10-16 11:24:45,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:24:45,319 INFO L481 AbstractCegarLoop]: Abstraction has 28237 states and 150261 transitions. [2020-10-16 11:24:45,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:24:45,319 INFO L276 IsEmpty]: Start isEmpty. Operand 28237 states and 150261 transitions. [2020-10-16 11:24:45,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 11:24:45,320 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:24:45,320 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:24:45,320 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2020-10-16 11:24:45,320 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]=== [2020-10-16 11:24:45,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:24:45,320 INFO L82 PathProgramCache]: Analyzing trace with hash 269605662, now seen corresponding path program 1 times [2020-10-16 11:24:45,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:24:45,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596103853] [2020-10-16 11:24:45,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:24:45,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:45,351 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 11:24:45,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596103853] [2020-10-16 11:24:45,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853386479] [2020-10-16 11:24:45,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:24:45,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:45,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 11:24:45,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:24:45,929 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 11:24:45,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:24:45,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-16 11:24:45,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991462168] [2020-10-16 11:24:45,929 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 11:24:45,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:24:45,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 11:24:45,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:24:45,930 INFO L87 Difference]: Start difference. First operand 28237 states and 150261 transitions. Second operand 9 states. [2020-10-16 11:24:46,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:24:46,496 INFO L93 Difference]: Finished difference Result 66831 states and 314874 transitions. [2020-10-16 11:24:46,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:24:46,496 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2020-10-16 11:24:46,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:24:46,695 INFO L225 Difference]: With dead ends: 66831 [2020-10-16 11:24:46,695 INFO L226 Difference]: Without dead ends: 66807 [2020-10-16 11:24:46,696 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-10-16 11:24:47,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66807 states. [2020-10-16 11:24:48,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66807 to 28673. [2020-10-16 11:24:48,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28673 states. [2020-10-16 11:24:48,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28673 states to 28673 states and 152375 transitions. [2020-10-16 11:24:48,361 INFO L78 Accepts]: Start accepts. Automaton has 28673 states and 152375 transitions. Word has length 19 [2020-10-16 11:24:48,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:24:48,361 INFO L481 AbstractCegarLoop]: Abstraction has 28673 states and 152375 transitions. [2020-10-16 11:24:48,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 11:24:48,361 INFO L276 IsEmpty]: Start isEmpty. Operand 28673 states and 152375 transitions. [2020-10-16 11:24:48,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 11:24:48,362 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:24:48,362 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:24:48,575 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable81 [2020-10-16 11:24:48,576 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]=== [2020-10-16 11:24:48,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:24:48,576 INFO L82 PathProgramCache]: Analyzing trace with hash -2138468196, now seen corresponding path program 2 times [2020-10-16 11:24:48,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:24:48,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127734572] [2020-10-16 11:24:48,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:24:48,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:48,606 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 11:24:48,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127734572] [2020-10-16 11:24:48,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:24:48,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 11:24:48,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963266413] [2020-10-16 11:24:48,608 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 11:24:48,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:24:48,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 11:24:48,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:24:48,608 INFO L87 Difference]: Start difference. First operand 28673 states and 152375 transitions. Second operand 7 states. [2020-10-16 11:24:49,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:24:49,154 INFO L93 Difference]: Finished difference Result 68538 states and 323189 transitions. [2020-10-16 11:24:49,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:24:49,155 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-16 11:24:49,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:24:49,363 INFO L225 Difference]: With dead ends: 68538 [2020-10-16 11:24:49,363 INFO L226 Difference]: Without dead ends: 68505 [2020-10-16 11:24:49,363 INFO L677 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 [2020-10-16 11:24:50,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68505 states. [2020-10-16 11:24:51,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68505 to 28061. [2020-10-16 11:24:51,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28061 states. [2020-10-16 11:24:51,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28061 states to 28061 states and 149307 transitions. [2020-10-16 11:24:51,510 INFO L78 Accepts]: Start accepts. Automaton has 28061 states and 149307 transitions. Word has length 19 [2020-10-16 11:24:51,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:24:51,510 INFO L481 AbstractCegarLoop]: Abstraction has 28061 states and 149307 transitions. [2020-10-16 11:24:51,510 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 11:24:51,510 INFO L276 IsEmpty]: Start isEmpty. Operand 28061 states and 149307 transitions. [2020-10-16 11:24:51,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 11:24:51,511 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:24:51,511 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:24:51,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2020-10-16 11:24:51,511 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]=== [2020-10-16 11:24:51,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:24:51,512 INFO L82 PathProgramCache]: Analyzing trace with hash -2138444729, now seen corresponding path program 1 times [2020-10-16 11:24:51,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:24:51,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092411132] [2020-10-16 11:24:51,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:24:51,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:51,541 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 11:24:51,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092411132] [2020-10-16 11:24:51,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:24:51,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 11:24:51,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116333152] [2020-10-16 11:24:51,542 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 11:24:51,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:24:51,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 11:24:51,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:24:51,543 INFO L87 Difference]: Start difference. First operand 28061 states and 149307 transitions. Second operand 7 states. [2020-10-16 11:24:52,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:24:52,086 INFO L93 Difference]: Finished difference Result 69070 states and 326154 transitions. [2020-10-16 11:24:52,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:24:52,087 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-16 11:24:52,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:24:52,299 INFO L225 Difference]: With dead ends: 69070 [2020-10-16 11:24:52,299 INFO L226 Difference]: Without dead ends: 69037 [2020-10-16 11:24:52,300 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 11:24:53,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69037 states. [2020-10-16 11:24:53,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69037 to 28938. [2020-10-16 11:24:53,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28938 states. [2020-10-16 11:24:54,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28938 states to 28938 states and 153909 transitions. [2020-10-16 11:24:54,718 INFO L78 Accepts]: Start accepts. Automaton has 28938 states and 153909 transitions. Word has length 19 [2020-10-16 11:24:54,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:24:54,718 INFO L481 AbstractCegarLoop]: Abstraction has 28938 states and 153909 transitions. [2020-10-16 11:24:54,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 11:24:54,718 INFO L276 IsEmpty]: Start isEmpty. Operand 28938 states and 153909 transitions. [2020-10-16 11:24:54,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 11:24:54,719 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:24:54,719 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:24:54,719 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2020-10-16 11:24:54,719 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]=== [2020-10-16 11:24:54,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:24:54,720 INFO L82 PathProgramCache]: Analyzing trace with hash -2117255609, now seen corresponding path program 2 times [2020-10-16 11:24:54,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:24:54,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944723797] [2020-10-16 11:24:54,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:24:54,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:54,748 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 11:24:54,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944723797] [2020-10-16 11:24:54,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:24:54,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 11:24:54,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283912534] [2020-10-16 11:24:54,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 11:24:54,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:24:54,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 11:24:54,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:24:54,750 INFO L87 Difference]: Start difference. First operand 28938 states and 153909 transitions. Second operand 7 states. [2020-10-16 11:24:55,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:24:55,306 INFO L93 Difference]: Finished difference Result 70096 states and 331298 transitions. [2020-10-16 11:24:55,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:24:55,306 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-16 11:24:55,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:24:55,513 INFO L225 Difference]: With dead ends: 70096 [2020-10-16 11:24:55,513 INFO L226 Difference]: Without dead ends: 70063 [2020-10-16 11:24:55,513 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 11:24:56,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70063 states. [2020-10-16 11:24:57,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70063 to 29094. [2020-10-16 11:24:57,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29094 states. [2020-10-16 11:24:57,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29094 states to 29094 states and 154883 transitions. [2020-10-16 11:24:57,215 INFO L78 Accepts]: Start accepts. Automaton has 29094 states and 154883 transitions. Word has length 19 [2020-10-16 11:24:57,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:24:57,215 INFO L481 AbstractCegarLoop]: Abstraction has 29094 states and 154883 transitions. [2020-10-16 11:24:57,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 11:24:57,215 INFO L276 IsEmpty]: Start isEmpty. Operand 29094 states and 154883 transitions. [2020-10-16 11:24:57,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:24:57,216 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:24:57,216 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:24:57,216 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2020-10-16 11:24:57,217 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]=== [2020-10-16 11:24:57,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:24:57,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1393024961, now seen corresponding path program 1 times [2020-10-16 11:24:57,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:24:57,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596969446] [2020-10-16 11:24:57,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:24:57,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:57,266 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 11:24:57,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596969446] [2020-10-16 11:24:57,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122416944] [2020-10-16 11:24:57,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:24:57,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:57,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 11:24:57,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:24:57,367 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 11:24:57,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:24:57,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 11:24:57,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105568525] [2020-10-16 11:24:57,367 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 11:24:57,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:24:57,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 11:24:57,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-16 11:24:57,368 INFO L87 Difference]: Start difference. First operand 29094 states and 154883 transitions. Second operand 11 states. [2020-10-16 11:24:58,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:24:58,911 INFO L93 Difference]: Finished difference Result 100731 states and 448596 transitions. [2020-10-16 11:24:58,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:24:58,912 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-10-16 11:24:58,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:24:59,219 INFO L225 Difference]: With dead ends: 100731 [2020-10-16 11:24:59,219 INFO L226 Difference]: Without dead ends: 100715 [2020-10-16 11:24:59,219 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 11:25:00,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100715 states. [2020-10-16 11:25:01,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100715 to 28723. [2020-10-16 11:25:01,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28723 states. [2020-10-16 11:25:01,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28723 states to 28723 states and 152772 transitions. [2020-10-16 11:25:01,300 INFO L78 Accepts]: Start accepts. Automaton has 28723 states and 152772 transitions. Word has length 21 [2020-10-16 11:25:01,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:25:01,300 INFO L481 AbstractCegarLoop]: Abstraction has 28723 states and 152772 transitions. [2020-10-16 11:25:01,300 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 11:25:01,300 INFO L276 IsEmpty]: Start isEmpty. Operand 28723 states and 152772 transitions. [2020-10-16 11:25:01,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:25:01,301 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:25:01,301 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:25:01,502 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:25:01,502 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]=== [2020-10-16 11:25:01,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:25:01,503 INFO L82 PathProgramCache]: Analyzing trace with hash 1414214081, now seen corresponding path program 2 times [2020-10-16 11:25:01,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:25:01,504 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812988164] [2020-10-16 11:25:01,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:25:01,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:25:01,548 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 11:25:01,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812988164] [2020-10-16 11:25:01,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054368570] [2020-10-16 11:25:01,549 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:25:01,630 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 11:25:01,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:25:01,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 11:25:01,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:25:01,648 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 11:25:01,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:25:01,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 11:25:01,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47783442] [2020-10-16 11:25:01,649 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 11:25:01,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:25:01,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 11:25:01,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-16 11:25:01,649 INFO L87 Difference]: Start difference. First operand 28723 states and 152772 transitions. Second operand 11 states. [2020-10-16 11:25:03,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:25:03,116 INFO L93 Difference]: Finished difference Result 99884 states and 444368 transitions. [2020-10-16 11:25:03,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:25:03,117 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-10-16 11:25:03,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:25:03,416 INFO L225 Difference]: With dead ends: 99884 [2020-10-16 11:25:03,416 INFO L226 Difference]: Without dead ends: 99863 [2020-10-16 11:25:03,416 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 11:25:04,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99863 states. [2020-10-16 11:25:05,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99863 to 28343. [2020-10-16 11:25:05,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28343 states. [2020-10-16 11:25:05,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28343 states to 28343 states and 150639 transitions. [2020-10-16 11:25:05,473 INFO L78 Accepts]: Start accepts. Automaton has 28343 states and 150639 transitions. Word has length 21 [2020-10-16 11:25:05,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:25:05,474 INFO L481 AbstractCegarLoop]: Abstraction has 28343 states and 150639 transitions. [2020-10-16 11:25:05,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 11:25:05,474 INFO L276 IsEmpty]: Start isEmpty. Operand 28343 states and 150639 transitions. [2020-10-16 11:25:05,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:25:05,475 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:25:05,475 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:25:05,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable86 [2020-10-16 11:25:05,676 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]=== [2020-10-16 11:25:05,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:25:05,676 INFO L82 PathProgramCache]: Analyzing trace with hash -2073547329, now seen corresponding path program 3 times [2020-10-16 11:25:05,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:25:05,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633318612] [2020-10-16 11:25:05,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:25:05,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:25:05,722 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 11:25:05,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633318612] [2020-10-16 11:25:05,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:25:05,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 11:25:05,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067183155] [2020-10-16 11:25:05,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 11:25:05,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:25:05,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 11:25:05,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:25:05,724 INFO L87 Difference]: Start difference. First operand 28343 states and 150639 transitions. Second operand 9 states. [2020-10-16 11:25:07,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:25:07,135 INFO L93 Difference]: Finished difference Result 100063 states and 445271 transitions. [2020-10-16 11:25:07,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:25:07,135 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-16 11:25:07,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:25:07,427 INFO L225 Difference]: With dead ends: 100063 [2020-10-16 11:25:07,427 INFO L226 Difference]: Without dead ends: 100047 [2020-10-16 11:25:07,428 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 11:25:08,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100047 states. [2020-10-16 11:25:09,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100047 to 27662. [2020-10-16 11:25:09,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27662 states. [2020-10-16 11:25:09,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27662 states to 27662 states and 147100 transitions. [2020-10-16 11:25:09,480 INFO L78 Accepts]: Start accepts. Automaton has 27662 states and 147100 transitions. Word has length 21 [2020-10-16 11:25:09,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:25:09,480 INFO L481 AbstractCegarLoop]: Abstraction has 27662 states and 147100 transitions. [2020-10-16 11:25:09,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 11:25:09,480 INFO L276 IsEmpty]: Start isEmpty. Operand 27662 states and 147100 transitions. [2020-10-16 11:25:09,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:25:09,481 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:25:09,481 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:25:09,482 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2020-10-16 11:25:09,482 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]=== [2020-10-16 11:25:09,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:25:09,482 INFO L82 PathProgramCache]: Analyzing trace with hash -2051019009, now seen corresponding path program 4 times [2020-10-16 11:25:09,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:25:09,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029837424] [2020-10-16 11:25:09,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:25:09,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:25:09,531 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 11:25:09,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029837424] [2020-10-16 11:25:09,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:25:09,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 11:25:09,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298711203] [2020-10-16 11:25:09,532 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 11:25:09,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:25:09,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 11:25:09,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:25:09,533 INFO L87 Difference]: Start difference. First operand 27662 states and 147100 transitions. Second operand 9 states. [2020-10-16 11:25:10,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:25:10,983 INFO L93 Difference]: Finished difference Result 99531 states and 442783 transitions. [2020-10-16 11:25:10,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:25:10,984 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-16 11:25:10,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:25:11,292 INFO L225 Difference]: With dead ends: 99531 [2020-10-16 11:25:11,292 INFO L226 Difference]: Without dead ends: 99510 [2020-10-16 11:25:11,293 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 11:25:12,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99510 states. [2020-10-16 11:25:13,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99510 to 27286. [2020-10-16 11:25:13,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27286 states. [2020-10-16 11:25:13,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27286 states to 27286 states and 144979 transitions. [2020-10-16 11:25:13,338 INFO L78 Accepts]: Start accepts. Automaton has 27286 states and 144979 transitions. Word has length 21 [2020-10-16 11:25:13,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:25:13,338 INFO L481 AbstractCegarLoop]: Abstraction has 27286 states and 144979 transitions. [2020-10-16 11:25:13,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 11:25:13,338 INFO L276 IsEmpty]: Start isEmpty. Operand 27286 states and 144979 transitions. [2020-10-16 11:25:13,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:25:13,339 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:25:13,339 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:25:13,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2020-10-16 11:25:13,339 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]=== [2020-10-16 11:25:13,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:25:13,340 INFO L82 PathProgramCache]: Analyzing trace with hash 102150333, now seen corresponding path program 1 times [2020-10-16 11:25:13,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:25:13,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17017532] [2020-10-16 11:25:13,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:25:13,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:25:13,359 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 11:25:13,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17017532] [2020-10-16 11:25:13,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:25:13,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:25:13,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935453262] [2020-10-16 11:25:13,361 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:25:13,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:25:13,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:25:13,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:25:13,362 INFO L87 Difference]: Start difference. First operand 27286 states and 144979 transitions. Second operand 5 states. [2020-10-16 11:25:13,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:25:13,699 INFO L93 Difference]: Finished difference Result 49004 states and 248721 transitions. [2020-10-16 11:25:13,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 11:25:13,700 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-16 11:25:13,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:25:13,850 INFO L225 Difference]: With dead ends: 49004 [2020-10-16 11:25:13,850 INFO L226 Difference]: Without dead ends: 48958 [2020-10-16 11:25:13,850 INFO L677 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 [2020-10-16 11:25:14,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48958 states. [2020-10-16 11:25:15,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48958 to 33985. [2020-10-16 11:25:15,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33985 states. [2020-10-16 11:25:15,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33985 states to 33985 states and 181777 transitions. [2020-10-16 11:25:15,634 INFO L78 Accepts]: Start accepts. Automaton has 33985 states and 181777 transitions. Word has length 21 [2020-10-16 11:25:15,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:25:15,634 INFO L481 AbstractCegarLoop]: Abstraction has 33985 states and 181777 transitions. [2020-10-16 11:25:15,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:25:15,634 INFO L276 IsEmpty]: Start isEmpty. Operand 33985 states and 181777 transitions. [2020-10-16 11:25:15,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:25:15,635 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:25:15,635 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:25:15,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2020-10-16 11:25:15,635 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]=== [2020-10-16 11:25:15,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:25:15,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1130516927, now seen corresponding path program 5 times [2020-10-16 11:25:15,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:25:15,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086126620] [2020-10-16 11:25:15,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:25:15,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:25:15,684 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 11:25:15,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086126620] [2020-10-16 11:25:15,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:25:15,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 11:25:15,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674325142] [2020-10-16 11:25:15,686 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 11:25:15,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:25:15,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 11:25:15,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:25:15,687 INFO L87 Difference]: Start difference. First operand 33985 states and 181777 transitions. Second operand 9 states. [2020-10-16 11:25:16,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:25:16,827 INFO L93 Difference]: Finished difference Result 115592 states and 523747 transitions. [2020-10-16 11:25:16,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:25:16,828 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-16 11:25:16,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:25:17,185 INFO L225 Difference]: With dead ends: 115592 [2020-10-16 11:25:17,185 INFO L226 Difference]: Without dead ends: 115567 [2020-10-16 11:25:17,185 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 11:25:18,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115567 states. [2020-10-16 11:25:20,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115567 to 33074. [2020-10-16 11:25:20,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33074 states. [2020-10-16 11:25:20,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33074 states to 33074 states and 176935 transitions. [2020-10-16 11:25:20,161 INFO L78 Accepts]: Start accepts. Automaton has 33074 states and 176935 transitions. Word has length 21 [2020-10-16 11:25:20,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:25:20,161 INFO L481 AbstractCegarLoop]: Abstraction has 33074 states and 176935 transitions. [2020-10-16 11:25:20,161 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 11:25:20,161 INFO L276 IsEmpty]: Start isEmpty. Operand 33074 states and 176935 transitions. [2020-10-16 11:25:20,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:25:20,162 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:25:20,162 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:25:20,162 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2020-10-16 11:25:20,162 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]=== [2020-10-16 11:25:20,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:25:20,163 INFO L82 PathProgramCache]: Analyzing trace with hash 1131856127, now seen corresponding path program 6 times [2020-10-16 11:25:20,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:25:20,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613584120] [2020-10-16 11:25:20,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:25:20,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:25:20,206 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 11:25:20,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613584120] [2020-10-16 11:25:20,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:25:20,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 11:25:20,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689194397] [2020-10-16 11:25:20,207 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 11:25:20,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:25:20,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 11:25:20,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:25:20,210 INFO L87 Difference]: Start difference. First operand 33074 states and 176935 transitions. Second operand 9 states. [2020-10-16 11:25:21,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:25:21,354 INFO L93 Difference]: Finished difference Result 114402 states and 517732 transitions. [2020-10-16 11:25:21,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:25:21,355 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-16 11:25:21,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:25:21,697 INFO L225 Difference]: With dead ends: 114402 [2020-10-16 11:25:21,697 INFO L226 Difference]: Without dead ends: 114371 [2020-10-16 11:25:21,698 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 11:25:23,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114371 states. [2020-10-16 11:25:24,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114371 to 31960. [2020-10-16 11:25:24,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31960 states. [2020-10-16 11:25:24,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31960 states to 31960 states and 171209 transitions. [2020-10-16 11:25:24,648 INFO L78 Accepts]: Start accepts. Automaton has 31960 states and 171209 transitions. Word has length 21 [2020-10-16 11:25:24,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:25:24,648 INFO L481 AbstractCegarLoop]: Abstraction has 31960 states and 171209 transitions. [2020-10-16 11:25:24,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 11:25:24,648 INFO L276 IsEmpty]: Start isEmpty. Operand 31960 states and 171209 transitions. [2020-10-16 11:25:24,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 11:25:24,650 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:25:24,650 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:25:24,650 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2020-10-16 11:25:24,650 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]=== [2020-10-16 11:25:24,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:25:24,650 INFO L82 PathProgramCache]: Analyzing trace with hash -1106577557, now seen corresponding path program 1 times [2020-10-16 11:25:24,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:25:24,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365636431] [2020-10-16 11:25:24,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:25:24,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:25:24,686 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-16 11:25:24,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365636431] [2020-10-16 11:25:24,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219996039] [2020-10-16 11:25:24,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:25:24,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:25:24,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 11:25:24,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:25:24,797 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-16 11:25:24,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:25:24,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-16 11:25:24,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387662553] [2020-10-16 11:25:24,798 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 11:25:24,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:25:24,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 11:25:24,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:25:24,799 INFO L87 Difference]: Start difference. First operand 31960 states and 171209 transitions. Second operand 9 states. [2020-10-16 11:25:25,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:25:25,459 INFO L93 Difference]: Finished difference Result 75380 states and 361389 transitions. [2020-10-16 11:25:25,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:25:25,460 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-10-16 11:25:25,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:25:26,245 INFO L225 Difference]: With dead ends: 75380 [2020-10-16 11:25:26,245 INFO L226 Difference]: Without dead ends: 75344 [2020-10-16 11:25:26,246 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-10-16 11:25:27,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75344 states. [2020-10-16 11:25:27,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75344 to 32974. [2020-10-16 11:25:27,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32974 states. [2020-10-16 11:25:28,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32974 states to 32974 states and 176363 transitions. [2020-10-16 11:25:28,124 INFO L78 Accepts]: Start accepts. Automaton has 32974 states and 176363 transitions. Word has length 23 [2020-10-16 11:25:28,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:25:28,124 INFO L481 AbstractCegarLoop]: Abstraction has 32974 states and 176363 transitions. [2020-10-16 11:25:28,124 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 11:25:28,124 INFO L276 IsEmpty]: Start isEmpty. Operand 32974 states and 176363 transitions. [2020-10-16 11:25:28,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 11:25:28,126 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:25:28,126 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:25:28,327 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:25:28,327 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]=== [2020-10-16 11:25:28,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:25:28,328 INFO L82 PathProgramCache]: Analyzing trace with hash 1026706248, now seen corresponding path program 1 times [2020-10-16 11:25:28,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:25:28,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182291006] [2020-10-16 11:25:28,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:25:28,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:25:28,364 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 11:25:28,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182291006] [2020-10-16 11:25:28,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620909520] [2020-10-16 11:25:28,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:25:28,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:25:28,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 11:25:28,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:25:28,466 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 11:25:28,466 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:25:28,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-16 11:25:28,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953792495] [2020-10-16 11:25:28,467 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 11:25:28,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:25:28,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 11:25:28,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:25:28,468 INFO L87 Difference]: Start difference. First operand 32974 states and 176363 transitions. Second operand 9 states. [2020-10-16 11:25:29,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:25:29,101 INFO L93 Difference]: Finished difference Result 79463 states and 381713 transitions. [2020-10-16 11:25:29,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:25:29,101 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-10-16 11:25:29,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:25:29,335 INFO L225 Difference]: With dead ends: 79463 [2020-10-16 11:25:29,335 INFO L226 Difference]: Without dead ends: 79421 [2020-10-16 11:25:29,335 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-10-16 11:25:30,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79421 states. [2020-10-16 11:25:31,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79421 to 33977. [2020-10-16 11:25:31,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33977 states. [2020-10-16 11:25:31,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33977 states to 33977 states and 181698 transitions. [2020-10-16 11:25:31,709 INFO L78 Accepts]: Start accepts. Automaton has 33977 states and 181698 transitions. Word has length 23 [2020-10-16 11:25:31,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:25:31,709 INFO L481 AbstractCegarLoop]: Abstraction has 33977 states and 181698 transitions. [2020-10-16 11:25:31,709 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 11:25:31,709 INFO L276 IsEmpty]: Start isEmpty. Operand 33977 states and 181698 transitions. [2020-10-16 11:25:31,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 11:25:31,711 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:25:31,711 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:25:31,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,37 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:25:31,912 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]=== [2020-10-16 11:25:31,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:25:31,913 INFO L82 PathProgramCache]: Analyzing trace with hash -617779723, now seen corresponding path program 2 times [2020-10-16 11:25:31,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:25:31,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725658895] [2020-10-16 11:25:31,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:25:31,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:25:31,946 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 11:25:31,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725658895] [2020-10-16 11:25:31,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:25:31,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 11:25:31,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458078042] [2020-10-16 11:25:31,947 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 11:25:31,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:25:31,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 11:25:31,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:25:31,948 INFO L87 Difference]: Start difference. First operand 33977 states and 181698 transitions. Second operand 7 states. [2020-10-16 11:25:33,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:25:33,021 INFO L93 Difference]: Finished difference Result 80867 states and 388763 transitions. [2020-10-16 11:25:33,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:25:33,022 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-16 11:25:33,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:25:33,277 INFO L225 Difference]: With dead ends: 80867 [2020-10-16 11:25:33,277 INFO L226 Difference]: Without dead ends: 80812 [2020-10-16 11:25:33,277 INFO L677 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 [2020-10-16 11:25:34,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80812 states. [2020-10-16 11:25:35,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80812 to 34223. [2020-10-16 11:25:35,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34223 states. [2020-10-16 11:25:35,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34223 states to 34223 states and 183033 transitions. [2020-10-16 11:25:35,775 INFO L78 Accepts]: Start accepts. Automaton has 34223 states and 183033 transitions. Word has length 23 [2020-10-16 11:25:35,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:25:35,776 INFO L481 AbstractCegarLoop]: Abstraction has 34223 states and 183033 transitions. [2020-10-16 11:25:35,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 11:25:35,776 INFO L276 IsEmpty]: Start isEmpty. Operand 34223 states and 183033 transitions. [2020-10-16 11:25:35,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 11:25:35,778 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:25:35,778 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:25:35,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2020-10-16 11:25:35,778 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]=== [2020-10-16 11:25:35,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:25:35,778 INFO L82 PathProgramCache]: Analyzing trace with hash -617778328, now seen corresponding path program 2 times [2020-10-16 11:25:35,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:25:35,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401728128] [2020-10-16 11:25:35,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:25:35,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:25:35,810 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 11:25:35,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401728128] [2020-10-16 11:25:35,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:25:35,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 11:25:35,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673982174] [2020-10-16 11:25:35,811 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 11:25:35,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:25:35,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 11:25:35,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:25:35,812 INFO L87 Difference]: Start difference. First operand 34223 states and 183033 transitions. Second operand 7 states. [2020-10-16 11:25:36,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:25:36,431 INFO L93 Difference]: Finished difference Result 80887 states and 388540 transitions. [2020-10-16 11:25:36,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:25:36,431 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-16 11:25:36,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:25:36,687 INFO L225 Difference]: With dead ends: 80887 [2020-10-16 11:25:36,687 INFO L226 Difference]: Without dead ends: 80832 [2020-10-16 11:25:36,687 INFO L677 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 [2020-10-16 11:25:38,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80832 states. [2020-10-16 11:25:39,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80832 to 34508. [2020-10-16 11:25:39,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34508 states. [2020-10-16 11:25:39,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34508 states to 34508 states and 184670 transitions. [2020-10-16 11:25:39,242 INFO L78 Accepts]: Start accepts. Automaton has 34508 states and 184670 transitions. Word has length 23 [2020-10-16 11:25:39,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:25:39,243 INFO L481 AbstractCegarLoop]: Abstraction has 34508 states and 184670 transitions. [2020-10-16 11:25:39,243 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 11:25:39,243 INFO L276 IsEmpty]: Start isEmpty. Operand 34508 states and 184670 transitions. [2020-10-16 11:25:39,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 11:25:39,244 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:25:39,245 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:25:39,245 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2020-10-16 11:25:39,245 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]=== [2020-10-16 11:25:39,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:25:39,245 INFO L82 PathProgramCache]: Analyzing trace with hash -617756256, now seen corresponding path program 1 times [2020-10-16 11:25:39,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:25:39,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211881840] [2020-10-16 11:25:39,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:25:39,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:25:39,278 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 11:25:39,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211881840] [2020-10-16 11:25:39,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:25:39,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 11:25:39,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254983788] [2020-10-16 11:25:39,280 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 11:25:39,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:25:39,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 11:25:39,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:25:39,280 INFO L87 Difference]: Start difference. First operand 34508 states and 184670 transitions. Second operand 7 states. [2020-10-16 11:25:39,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:25:39,939 INFO L93 Difference]: Finished difference Result 83313 states and 401031 transitions. [2020-10-16 11:25:39,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:25:39,940 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-16 11:25:39,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:25:40,186 INFO L225 Difference]: With dead ends: 83313 [2020-10-16 11:25:40,187 INFO L226 Difference]: Without dead ends: 83258 [2020-10-16 11:25:40,187 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 11:25:41,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83258 states. [2020-10-16 11:25:42,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83258 to 36258. [2020-10-16 11:25:42,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36258 states. [2020-10-16 11:25:42,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36258 states to 36258 states and 193887 transitions. [2020-10-16 11:25:42,781 INFO L78 Accepts]: Start accepts. Automaton has 36258 states and 193887 transitions. Word has length 23 [2020-10-16 11:25:42,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:25:42,781 INFO L481 AbstractCegarLoop]: Abstraction has 36258 states and 193887 transitions. [2020-10-16 11:25:42,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 11:25:42,781 INFO L276 IsEmpty]: Start isEmpty. Operand 36258 states and 193887 transitions. [2020-10-16 11:25:42,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 11:25:42,783 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:25:42,783 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:25:42,783 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2020-10-16 11:25:42,783 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]=== [2020-10-16 11:25:42,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:25:42,783 INFO L82 PathProgramCache]: Analyzing trace with hash -581716896, now seen corresponding path program 2 times [2020-10-16 11:25:42,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:25:42,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208288081] [2020-10-16 11:25:42,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:25:42,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:25:42,816 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 11:25:42,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208288081] [2020-10-16 11:25:42,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:25:42,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 11:25:42,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186222471] [2020-10-16 11:25:42,817 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 11:25:42,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:25:42,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 11:25:42,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:25:42,818 INFO L87 Difference]: Start difference. First operand 36258 states and 193887 transitions. Second operand 7 states. [2020-10-16 11:25:43,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:25:43,511 INFO L93 Difference]: Finished difference Result 84364 states and 406246 transitions. [2020-10-16 11:25:43,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:25:43,511 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-16 11:25:43,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:25:43,790 INFO L225 Difference]: With dead ends: 84364 [2020-10-16 11:25:43,791 INFO L226 Difference]: Without dead ends: 84309 [2020-10-16 11:25:43,791 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 11:25:44,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84309 states. [2020-10-16 11:25:46,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84309 to 37062. [2020-10-16 11:25:46,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37062 states. [2020-10-16 11:25:46,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37062 states to 37062 states and 198528 transitions. [2020-10-16 11:25:46,521 INFO L78 Accepts]: Start accepts. Automaton has 37062 states and 198528 transitions. Word has length 23 [2020-10-16 11:25:46,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:25:46,521 INFO L481 AbstractCegarLoop]: Abstraction has 37062 states and 198528 transitions. [2020-10-16 11:25:46,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 11:25:46,522 INFO L276 IsEmpty]: Start isEmpty. Operand 37062 states and 198528 transitions. [2020-10-16 11:25:46,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:25:46,525 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:25:46,525 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:25:46,525 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2020-10-16 11:25:46,525 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]=== [2020-10-16 11:25:46,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:25:46,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1745706838, now seen corresponding path program 1 times [2020-10-16 11:25:46,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:25:46,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531118061] [2020-10-16 11:25:46,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:25:46,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:25:46,573 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-16 11:25:46,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531118061] [2020-10-16 11:25:46,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6681884] [2020-10-16 11:25:46,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:25:46,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:25:46,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 11:25:46,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:25:46,685 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-16 11:25:46,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:25:46,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 11:25:46,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811337337] [2020-10-16 11:25:46,686 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 11:25:46,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:25:46,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 11:25:46,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-16 11:25:46,687 INFO L87 Difference]: Start difference. First operand 37062 states and 198528 transitions. Second operand 11 states. [2020-10-16 11:25:47,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:25:47,946 INFO L93 Difference]: Finished difference Result 122892 states and 561130 transitions. [2020-10-16 11:25:47,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:25:47,947 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-16 11:25:47,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:25:48,321 INFO L225 Difference]: With dead ends: 122892 [2020-10-16 11:25:48,321 INFO L226 Difference]: Without dead ends: 122862 [2020-10-16 11:25:48,321 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 11:25:50,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122862 states. [2020-10-16 11:25:51,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122862 to 36735. [2020-10-16 11:25:51,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36735 states. [2020-10-16 11:25:51,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36735 states to 36735 states and 196486 transitions. [2020-10-16 11:25:51,652 INFO L78 Accepts]: Start accepts. Automaton has 36735 states and 196486 transitions. Word has length 25 [2020-10-16 11:25:51,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:25:51,653 INFO L481 AbstractCegarLoop]: Abstraction has 36735 states and 196486 transitions. [2020-10-16 11:25:51,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 11:25:51,653 INFO L276 IsEmpty]: Start isEmpty. Operand 36735 states and 196486 transitions. [2020-10-16 11:25:51,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:25:51,656 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:25:51,656 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:25:51,856 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2020-10-16 11:25:51,857 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]=== [2020-10-16 11:25:51,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:25:51,857 INFO L82 PathProgramCache]: Analyzing trace with hash 1730856598, now seen corresponding path program 2 times [2020-10-16 11:25:51,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:25:51,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751359540] [2020-10-16 11:25:51,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:25:51,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:25:51,906 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-16 11:25:51,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751359540] [2020-10-16 11:25:51,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131781357] [2020-10-16 11:25:51,907 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:25:51,991 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 11:25:51,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:25:51,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 11:25:51,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:25:52,010 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-16 11:25:52,010 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:25:52,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 11:25:52,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561181965] [2020-10-16 11:25:52,011 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 11:25:52,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:25:52,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 11:25:52,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-16 11:25:52,011 INFO L87 Difference]: Start difference. First operand 36735 states and 196486 transitions. Second operand 11 states. [2020-10-16 11:25:53,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:25:53,779 INFO L93 Difference]: Finished difference Result 121506 states and 554103 transitions. [2020-10-16 11:25:53,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:25:53,779 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-16 11:25:53,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:25:54,189 INFO L225 Difference]: With dead ends: 121506 [2020-10-16 11:25:54,189 INFO L226 Difference]: Without dead ends: 121473 [2020-10-16 11:25:54,189 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 11:25:55,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121473 states. [2020-10-16 11:26:00,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121473 to 36666. [2020-10-16 11:26:00,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36666 states. [2020-10-16 11:26:00,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36666 states to 36666 states and 195964 transitions. [2020-10-16 11:26:00,251 INFO L78 Accepts]: Start accepts. Automaton has 36666 states and 195964 transitions. Word has length 25 [2020-10-16 11:26:00,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:26:00,252 INFO L481 AbstractCegarLoop]: Abstraction has 36666 states and 195964 transitions. [2020-10-16 11:26:00,252 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 11:26:00,252 INFO L276 IsEmpty]: Start isEmpty. Operand 36666 states and 195964 transitions. [2020-10-16 11:26:00,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:26:00,255 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:26:00,256 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:26:00,456 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:26:00,456 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]=== [2020-10-16 11:26:00,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:26:00,457 INFO L82 PathProgramCache]: Analyzing trace with hash 1730878670, now seen corresponding path program 1 times [2020-10-16 11:26:00,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:26:00,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718518824] [2020-10-16 11:26:00,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:26:00,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:26:00,505 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-16 11:26:00,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718518824] [2020-10-16 11:26:00,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807400908] [2020-10-16 11:26:00,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:26:00,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:26:00,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 11:26:00,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:26:00,614 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-16 11:26:00,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:26:00,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 11:26:00,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390046434] [2020-10-16 11:26:00,615 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 11:26:00,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:26:00,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 11:26:00,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-16 11:26:00,615 INFO L87 Difference]: Start difference. First operand 36666 states and 195964 transitions. Second operand 11 states. [2020-10-16 11:26:01,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:26:01,826 INFO L93 Difference]: Finished difference Result 120500 states and 549397 transitions. [2020-10-16 11:26:01,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:26:01,827 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-16 11:26:01,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:26:02,228 INFO L225 Difference]: With dead ends: 120500 [2020-10-16 11:26:02,228 INFO L226 Difference]: Without dead ends: 120470 [2020-10-16 11:26:02,229 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 11:26:03,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120470 states. [2020-10-16 11:26:05,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120470 to 36343. [2020-10-16 11:26:05,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36343 states. [2020-10-16 11:26:05,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36343 states to 36343 states and 194056 transitions. [2020-10-16 11:26:05,630 INFO L78 Accepts]: Start accepts. Automaton has 36343 states and 194056 transitions. Word has length 25 [2020-10-16 11:26:05,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:26:05,631 INFO L481 AbstractCegarLoop]: Abstraction has 36343 states and 194056 transitions. [2020-10-16 11:26:05,631 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 11:26:05,631 INFO L276 IsEmpty]: Start isEmpty. Operand 36343 states and 194056 transitions. [2020-10-16 11:26:05,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:26:05,634 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:26:05,634 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:26:05,834 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2020-10-16 11:26:05,835 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]=== [2020-10-16 11:26:05,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:26:05,835 INFO L82 PathProgramCache]: Analyzing trace with hash 1766918030, now seen corresponding path program 2 times [2020-10-16 11:26:05,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:26:05,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675935207] [2020-10-16 11:26:05,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:26:05,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:26:05,883 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-16 11:26:05,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675935207] [2020-10-16 11:26:05,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55048605] [2020-10-16 11:26:05,884 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:26:05,972 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 11:26:05,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:26:05,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 11:26:05,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:26:06,008 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-16 11:26:06,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:26:06,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 11:26:06,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709843059] [2020-10-16 11:26:06,009 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 11:26:06,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:26:06,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 11:26:06,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-16 11:26:06,009 INFO L87 Difference]: Start difference. First operand 36343 states and 194056 transitions. Second operand 11 states. [2020-10-16 11:26:07,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:26:07,253 INFO L93 Difference]: Finished difference Result 119731 states and 545560 transitions. [2020-10-16 11:26:07,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:26:07,254 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-16 11:26:07,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:26:07,625 INFO L225 Difference]: With dead ends: 119731 [2020-10-16 11:26:07,626 INFO L226 Difference]: Without dead ends: 119698 [2020-10-16 11:26:07,626 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 11:26:09,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119698 states. [2020-10-16 11:26:10,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119698 to 36040. [2020-10-16 11:26:10,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36040 states. [2020-10-16 11:26:11,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36040 states to 36040 states and 192287 transitions. [2020-10-16 11:26:11,054 INFO L78 Accepts]: Start accepts. Automaton has 36040 states and 192287 transitions. Word has length 25 [2020-10-16 11:26:11,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:26:11,054 INFO L481 AbstractCegarLoop]: Abstraction has 36040 states and 192287 transitions. [2020-10-16 11:26:11,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 11:26:11,054 INFO L276 IsEmpty]: Start isEmpty. Operand 36040 states and 192287 transitions. [2020-10-16 11:26:11,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:26:11,057 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:26:11,057 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:26:11,257 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:26:11,258 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]=== [2020-10-16 11:26:11,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:26:11,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1849107924, now seen corresponding path program 3 times [2020-10-16 11:26:11,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:26:11,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148549377] [2020-10-16 11:26:11,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:26:11,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:26:11,309 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 11:26:11,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148549377] [2020-10-16 11:26:11,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390152683] [2020-10-16 11:26:11,309 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:26:11,391 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 11:26:11,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:26:11,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 11:26:11,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:26:11,411 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 11:26:11,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:26:11,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 11:26:11,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160824918] [2020-10-16 11:26:11,412 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 11:26:11,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:26:11,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 11:26:11,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-16 11:26:11,412 INFO L87 Difference]: Start difference. First operand 36040 states and 192287 transitions. Second operand 11 states. [2020-10-16 11:26:12,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:26:12,969 INFO L93 Difference]: Finished difference Result 119762 states and 545615 transitions. [2020-10-16 11:26:12,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:26:12,969 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-16 11:26:12,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:26:13,343 INFO L225 Difference]: With dead ends: 119762 [2020-10-16 11:26:13,343 INFO L226 Difference]: Without dead ends: 119732 [2020-10-16 11:26:13,343 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 11:26:14,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119732 states. [2020-10-16 11:26:18,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119732 to 35475. [2020-10-16 11:26:18,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35475 states. [2020-10-16 11:26:19,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35475 states to 35475 states and 189246 transitions. [2020-10-16 11:26:19,016 INFO L78 Accepts]: Start accepts. Automaton has 35475 states and 189246 transitions. Word has length 25 [2020-10-16 11:26:19,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:26:19,016 INFO L481 AbstractCegarLoop]: Abstraction has 35475 states and 189246 transitions. [2020-10-16 11:26:19,016 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 11:26:19,016 INFO L276 IsEmpty]: Start isEmpty. Operand 35475 states and 189246 transitions. [2020-10-16 11:26:19,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:26:19,019 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:26:19,019 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:26:19,219 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2020-10-16 11:26:19,220 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]=== [2020-10-16 11:26:19,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:26:19,220 INFO L82 PathProgramCache]: Analyzing trace with hash -1177775680, now seen corresponding path program 4 times [2020-10-16 11:26:19,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:26:19,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211109055] [2020-10-16 11:26:19,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:26:19,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:26:19,271 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 11:26:19,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211109055] [2020-10-16 11:26:19,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421180782] [2020-10-16 11:26:19,272 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:26:19,359 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 11:26:19,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:26:19,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 11:26:19,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:26:19,380 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 11:26:19,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:26:19,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 11:26:19,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281523861] [2020-10-16 11:26:19,381 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 11:26:19,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:26:19,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 11:26:19,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-16 11:26:19,381 INFO L87 Difference]: Start difference. First operand 35475 states and 189246 transitions. Second operand 11 states. [2020-10-16 11:26:20,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:26:20,639 INFO L93 Difference]: Finished difference Result 120788 states and 550630 transitions. [2020-10-16 11:26:20,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:26:20,640 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-16 11:26:20,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:26:21,007 INFO L225 Difference]: With dead ends: 120788 [2020-10-16 11:26:21,007 INFO L226 Difference]: Without dead ends: 120755 [2020-10-16 11:26:21,008 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 11:26:22,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120755 states. [2020-10-16 11:26:24,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120755 to 35406. [2020-10-16 11:26:24,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35406 states. [2020-10-16 11:26:24,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35406 states to 35406 states and 188724 transitions. [2020-10-16 11:26:24,330 INFO L78 Accepts]: Start accepts. Automaton has 35406 states and 188724 transitions. Word has length 25 [2020-10-16 11:26:24,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:26:24,330 INFO L481 AbstractCegarLoop]: Abstraction has 35406 states and 188724 transitions. [2020-10-16 11:26:24,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 11:26:24,330 INFO L276 IsEmpty]: Start isEmpty. Operand 35406 states and 188724 transitions. [2020-10-16 11:26:24,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:26:24,333 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:26:24,333 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:26:24,539 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2020-10-16 11:26:24,540 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]=== [2020-10-16 11:26:24,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:26:24,540 INFO L82 PathProgramCache]: Analyzing trace with hash -1177752213, now seen corresponding path program 1 times [2020-10-16 11:26:24,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:26:24,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165280626] [2020-10-16 11:26:24,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:26:24,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:26:24,587 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 11:26:24,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165280626] [2020-10-16 11:26:24,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969278004] [2020-10-16 11:26:24,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:26:24,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:26:24,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 11:26:24,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:26:24,695 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 11:26:24,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:26:24,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 11:26:24,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706479243] [2020-10-16 11:26:24,696 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 11:26:24,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:26:24,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 11:26:24,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-16 11:26:24,696 INFO L87 Difference]: Start difference. First operand 35406 states and 188724 transitions. Second operand 11 states. [2020-10-16 11:26:26,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:26:26,011 INFO L93 Difference]: Finished difference Result 120291 states and 549128 transitions. [2020-10-16 11:26:26,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:26:26,011 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-16 11:26:26,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:26:29,493 INFO L225 Difference]: With dead ends: 120291 [2020-10-16 11:26:29,493 INFO L226 Difference]: Without dead ends: 120261 [2020-10-16 11:26:29,493 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 11:26:30,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120261 states. [2020-10-16 11:26:31,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120261 to 35196. [2020-10-16 11:26:31,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35196 states. [2020-10-16 11:26:32,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35196 states to 35196 states and 187476 transitions. [2020-10-16 11:26:32,036 INFO L78 Accepts]: Start accepts. Automaton has 35196 states and 187476 transitions. Word has length 25 [2020-10-16 11:26:32,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:26:32,036 INFO L481 AbstractCegarLoop]: Abstraction has 35196 states and 187476 transitions. [2020-10-16 11:26:32,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 11:26:32,036 INFO L276 IsEmpty]: Start isEmpty. Operand 35196 states and 187476 transitions. [2020-10-16 11:26:32,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:26:32,039 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:26:32,039 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:26:32,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:26:32,240 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]=== [2020-10-16 11:26:32,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:26:32,240 INFO L82 PathProgramCache]: Analyzing trace with hash -1141712853, now seen corresponding path program 2 times [2020-10-16 11:26:32,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:26:32,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617447523] [2020-10-16 11:26:32,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:26:32,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:26:32,294 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 11:26:32,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617447523] [2020-10-16 11:26:32,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098961503] [2020-10-16 11:26:32,295 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:26:32,380 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 11:26:32,381 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:26:32,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 11:26:32,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:26:32,402 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 11:26:32,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:26:32,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 11:26:32,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718400985] [2020-10-16 11:26:32,404 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 11:26:32,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:26:32,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 11:26:32,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-16 11:26:32,405 INFO L87 Difference]: Start difference. First operand 35196 states and 187476 transitions. Second operand 11 states. [2020-10-16 11:26:33,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:26:33,999 INFO L93 Difference]: Finished difference Result 119264 states and 544110 transitions. [2020-10-16 11:26:34,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:26:34,000 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-16 11:26:34,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:26:34,396 INFO L225 Difference]: With dead ends: 119264 [2020-10-16 11:26:34,397 INFO L226 Difference]: Without dead ends: 119224 [2020-10-16 11:26:34,397 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 11:26:35,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119224 states. [2020-10-16 11:26:39,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119224 to 34815. [2020-10-16 11:26:39,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34815 states. [2020-10-16 11:26:40,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34815 states to 34815 states and 185342 transitions. [2020-10-16 11:26:40,056 INFO L78 Accepts]: Start accepts. Automaton has 34815 states and 185342 transitions. Word has length 25 [2020-10-16 11:26:40,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:26:40,057 INFO L481 AbstractCegarLoop]: Abstraction has 34815 states and 185342 transitions. [2020-10-16 11:26:40,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 11:26:40,057 INFO L276 IsEmpty]: Start isEmpty. Operand 34815 states and 185342 transitions. [2020-10-16 11:26:40,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:26:40,060 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:26:40,060 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:26:40,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable105 [2020-10-16 11:26:40,267 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]=== [2020-10-16 11:26:40,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:26:40,267 INFO L82 PathProgramCache]: Analyzing trace with hash -980827488, now seen corresponding path program 5 times [2020-10-16 11:26:40,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:26:40,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509120017] [2020-10-16 11:26:40,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:26:40,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:26:40,316 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 11:26:40,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509120017] [2020-10-16 11:26:40,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:26:40,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 11:26:40,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850110392] [2020-10-16 11:26:40,318 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 11:26:40,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:26:40,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 11:26:40,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:26:40,319 INFO L87 Difference]: Start difference. First operand 34815 states and 185342 transitions. Second operand 9 states. [2020-10-16 11:26:41,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:26:41,452 INFO L93 Difference]: Finished difference Result 119116 states and 542590 transitions. [2020-10-16 11:26:41,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:26:41,453 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-16 11:26:41,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:26:41,794 INFO L225 Difference]: With dead ends: 119116 [2020-10-16 11:26:41,794 INFO L226 Difference]: Without dead ends: 119086 [2020-10-16 11:26:41,795 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 11:26:42,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119086 states. [2020-10-16 11:26:44,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119086 to 34044. [2020-10-16 11:26:44,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34044 states. [2020-10-16 11:26:45,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34044 states to 34044 states and 181257 transitions. [2020-10-16 11:26:45,122 INFO L78 Accepts]: Start accepts. Automaton has 34044 states and 181257 transitions. Word has length 25 [2020-10-16 11:26:45,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:26:45,122 INFO L481 AbstractCegarLoop]: Abstraction has 34044 states and 181257 transitions. [2020-10-16 11:26:45,122 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 11:26:45,122 INFO L276 IsEmpty]: Start isEmpty. Operand 34044 states and 181257 transitions. [2020-10-16 11:26:45,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:26:45,125 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:26:45,125 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:26:45,125 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2020-10-16 11:26:45,125 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]=== [2020-10-16 11:26:45,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:26:45,125 INFO L82 PathProgramCache]: Analyzing trace with hash -980805416, now seen corresponding path program 3 times [2020-10-16 11:26:45,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:26:45,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347297883] [2020-10-16 11:26:45,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:26:45,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:26:45,178 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 11:26:45,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347297883] [2020-10-16 11:26:45,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:26:45,179 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 11:26:45,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471534651] [2020-10-16 11:26:45,179 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 11:26:45,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:26:45,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 11:26:45,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:26:45,180 INFO L87 Difference]: Start difference. First operand 34044 states and 181257 transitions. Second operand 9 states. [2020-10-16 11:26:46,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:26:46,391 INFO L93 Difference]: Finished difference Result 118392 states and 539774 transitions. [2020-10-16 11:26:46,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:26:46,391 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-16 11:26:46,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:26:47,675 INFO L225 Difference]: With dead ends: 118392 [2020-10-16 11:26:47,675 INFO L226 Difference]: Without dead ends: 118362 [2020-10-16 11:26:47,676 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 11:26:48,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118362 states. [2020-10-16 11:26:50,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118362 to 33530. [2020-10-16 11:26:50,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33530 states. [2020-10-16 11:26:50,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33530 states to 33530 states and 178563 transitions. [2020-10-16 11:26:50,177 INFO L78 Accepts]: Start accepts. Automaton has 33530 states and 178563 transitions. Word has length 25 [2020-10-16 11:26:50,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:26:50,177 INFO L481 AbstractCegarLoop]: Abstraction has 33530 states and 178563 transitions. [2020-10-16 11:26:50,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 11:26:50,177 INFO L276 IsEmpty]: Start isEmpty. Operand 33530 states and 178563 transitions. [2020-10-16 11:26:50,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:26:50,180 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:26:50,180 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:26:50,180 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2020-10-16 11:26:50,180 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]=== [2020-10-16 11:26:50,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:26:50,181 INFO L82 PathProgramCache]: Analyzing trace with hash -979488288, now seen corresponding path program 6 times [2020-10-16 11:26:50,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:26:50,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789569495] [2020-10-16 11:26:50,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:26:50,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:26:50,228 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 11:26:50,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789569495] [2020-10-16 11:26:50,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:26:50,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 11:26:50,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492923980] [2020-10-16 11:26:50,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 11:26:50,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:26:50,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 11:26:50,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:26:50,230 INFO L87 Difference]: Start difference. First operand 33530 states and 178563 transitions. Second operand 9 states. [2020-10-16 11:26:51,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:26:51,752 INFO L93 Difference]: Finished difference Result 116966 states and 531912 transitions. [2020-10-16 11:26:51,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:26:51,753 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-16 11:26:51,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:26:52,116 INFO L225 Difference]: With dead ends: 116966 [2020-10-16 11:26:52,116 INFO L226 Difference]: Without dead ends: 116926 [2020-10-16 11:26:52,116 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 11:26:53,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116926 states. [2020-10-16 11:26:57,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116926 to 32557. [2020-10-16 11:26:57,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32557 states. [2020-10-16 11:26:57,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32557 states to 32557 states and 173592 transitions. [2020-10-16 11:26:57,792 INFO L78 Accepts]: Start accepts. Automaton has 32557 states and 173592 transitions. Word has length 25 [2020-10-16 11:26:57,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:26:57,792 INFO L481 AbstractCegarLoop]: Abstraction has 32557 states and 173592 transitions. [2020-10-16 11:26:57,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 11:26:57,792 INFO L276 IsEmpty]: Start isEmpty. Operand 32557 states and 173592 transitions. [2020-10-16 11:26:57,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:26:57,795 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:26:57,795 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:26:57,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2020-10-16 11:26:57,795 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]=== [2020-10-16 11:26:57,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:26:57,795 INFO L82 PathProgramCache]: Analyzing trace with hash -979464821, now seen corresponding path program 3 times [2020-10-16 11:26:57,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:26:57,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752317606] [2020-10-16 11:26:57,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:26:57,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:26:57,846 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 11:26:57,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752317606] [2020-10-16 11:26:57,847 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:26:57,847 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 11:26:57,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415297146] [2020-10-16 11:26:57,848 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 11:26:57,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:26:57,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 11:26:57,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:26:57,848 INFO L87 Difference]: Start difference. First operand 32557 states and 173592 transitions. Second operand 9 states. [2020-10-16 11:26:59,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:26:59,014 INFO L93 Difference]: Finished difference Result 116421 states and 530054 transitions. [2020-10-16 11:26:59,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:26:59,014 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-16 11:26:59,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:26:59,420 INFO L225 Difference]: With dead ends: 116421 [2020-10-16 11:26:59,420 INFO L226 Difference]: Without dead ends: 116391 [2020-10-16 11:26:59,420 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 11:27:00,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116391 states. [2020-10-16 11:27:02,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116391 to 32226. [2020-10-16 11:27:02,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32226 states. [2020-10-16 11:27:02,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32226 states to 32226 states and 171898 transitions. [2020-10-16 11:27:02,463 INFO L78 Accepts]: Start accepts. Automaton has 32226 states and 171898 transitions. Word has length 25 [2020-10-16 11:27:02,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:27:02,463 INFO L481 AbstractCegarLoop]: Abstraction has 32226 states and 171898 transitions. [2020-10-16 11:27:02,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 11:27:02,464 INFO L276 IsEmpty]: Start isEmpty. Operand 32226 states and 171898 transitions. [2020-10-16 11:27:02,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:27:02,466 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:27:02,466 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:27:02,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2020-10-16 11:27:02,466 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]=== [2020-10-16 11:27:02,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:27:02,466 INFO L82 PathProgramCache]: Analyzing trace with hash -958277096, now seen corresponding path program 4 times [2020-10-16 11:27:02,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:27:02,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980905348] [2020-10-16 11:27:02,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:27:02,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:27:02,518 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 11:27:02,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980905348] [2020-10-16 11:27:02,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:27:02,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 11:27:02,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686495968] [2020-10-16 11:27:02,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 11:27:02,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:27:02,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 11:27:02,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:27:02,520 INFO L87 Difference]: Start difference. First operand 32226 states and 171898 transitions. Second operand 9 states. [2020-10-16 11:27:03,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:27:03,711 INFO L93 Difference]: Finished difference Result 116502 states and 530595 transitions. [2020-10-16 11:27:03,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:27:03,711 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-16 11:27:03,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:27:04,047 INFO L225 Difference]: With dead ends: 116502 [2020-10-16 11:27:04,047 INFO L226 Difference]: Without dead ends: 116462 [2020-10-16 11:27:04,047 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 Received shutdown request... [2020-10-16 11:27:05,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116462 states. [2020-10-16 11:27:05,954 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2020-10-16 11:27:05,954 WARN L546 AbstractCegarLoop]: Verification canceled [2020-10-16 11:27:05,956 WARN L235 ceAbstractionStarter]: Timeout [2020-10-16 11:27:05,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 11:27:05 BasicIcfg [2020-10-16 11:27:05,956 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 11:27:05,958 INFO L168 Benchmark]: Toolchain (without parser) took 231396.91 ms. Allocated memory was 145.8 MB in the beginning and 3.1 GB in the end (delta: 3.0 GB). Free memory was 100.3 MB in the beginning and 1.8 GB in the end (delta: -1.7 GB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2020-10-16 11:27:05,958 INFO L168 Benchmark]: CDTParser took 0.56 ms. Allocated memory is still 145.8 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-10-16 11:27:05,958 INFO L168 Benchmark]: CACSL2BoogieTranslator took 728.34 ms. Allocated memory was 145.8 MB in the beginning and 204.5 MB in the end (delta: 58.7 MB). Free memory was 100.1 MB in the beginning and 164.3 MB in the end (delta: -64.2 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. [2020-10-16 11:27:05,959 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.72 ms. Allocated memory is still 204.5 MB. Free memory was 164.3 MB in the beginning and 162.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-16 11:27:05,959 INFO L168 Benchmark]: Boogie Preprocessor took 25.06 ms. Allocated memory is still 204.5 MB. Free memory was 162.3 MB in the beginning and 160.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-10-16 11:27:05,959 INFO L168 Benchmark]: RCFGBuilder took 404.30 ms. Allocated memory is still 204.5 MB. Free memory was 160.9 MB in the beginning and 140.9 MB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. [2020-10-16 11:27:05,960 INFO L168 Benchmark]: TraceAbstraction took 230178.51 ms. Allocated memory was 204.5 MB in the beginning and 3.1 GB in the end (delta: 2.9 GB). Free memory was 140.9 MB in the beginning and 1.8 GB in the end (delta: -1.6 GB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2020-10-16 11:27:05,961 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.56 ms. Allocated memory is still 145.8 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 728.34 ms. Allocated memory was 145.8 MB in the beginning and 204.5 MB in the end (delta: 58.7 MB). Free memory was 100.1 MB in the beginning and 164.3 MB in the end (delta: -64.2 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 54.72 ms. Allocated memory is still 204.5 MB. Free memory was 164.3 MB in the beginning and 162.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.06 ms. Allocated memory is still 204.5 MB. Free memory was 162.3 MB in the beginning and 160.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 404.30 ms. Allocated memory is still 204.5 MB. Free memory was 160.9 MB in the beginning and 140.9 MB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 230178.51 ms. Allocated memory was 204.5 MB in the beginning and 3.1 GB in the end (delta: 2.9 GB). Free memory was 140.9 MB in the beginning and 1.8 GB in the end (delta: -1.6 GB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 484 VarBasedMoverChecksPositive, 4 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 4 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 3 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.1s, 55 PlacesBefore, 18 PlacesAfterwards, 51 TransitionsBefore, 12 TransitionsAfterwards, 692 CoEnabledTransitionPairs, 5 FixpointIterations, 13 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 2 ChoiceCompositions, 47 TotalNumberOfCompositions, 670 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 726 VarBasedMoverChecksPositive, 8 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 8 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 32 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.2s, 76 PlacesBefore, 31 PlacesAfterwards, 69 TransitionsBefore, 21 TransitionsAfterwards, 1108 CoEnabledTransitionPairs, 5 FixpointIterations, 25 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 5 ConcurrentYvCompositions, 3 ChoiceCompositions, 62 TotalNumberOfCompositions, 1240 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 945 VarBasedMoverChecksPositive, 18 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 18 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 39 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.4s, 97 PlacesBefore, 41 PlacesAfterwards, 87 TransitionsBefore, 27 TransitionsAfterwards, 1608 CoEnabledTransitionPairs, 5 FixpointIterations, 32 TrivialSequentialCompositions, 30 ConcurrentSequentialCompositions, 7 TrivialYvCompositions, 4 ConcurrentYvCompositions, 4 ChoiceCompositions, 77 TotalNumberOfCompositions, 2157 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1337 VarBasedMoverChecksPositive, 21 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 21 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 76 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.6s, 118 PlacesBefore, 51 PlacesAfterwards, 105 TransitionsBefore, 33 TransitionsAfterwards, 2192 CoEnabledTransitionPairs, 5 FixpointIterations, 43 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 10 TrivialYvCompositions, 5 ConcurrentYvCompositions, 5 ChoiceCompositions, 97 TotalNumberOfCompositions, 2978 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1675 VarBasedMoverChecksPositive, 29 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 29 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 63 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.8s, 139 PlacesBefore, 61 PlacesAfterwards, 123 TransitionsBefore, 39 TransitionsAfterwards, 2860 CoEnabledTransitionPairs, 5 FixpointIterations, 59 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 11 TrivialYvCompositions, 5 ConcurrentYvCompositions, 6 ChoiceCompositions, 121 TotalNumberOfCompositions, 4168 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 2181 VarBasedMoverChecksPositive, 36 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 36 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 113 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.0s, 160 PlacesBefore, 71 PlacesAfterwards, 141 TransitionsBefore, 45 TransitionsAfterwards, 3612 CoEnabledTransitionPairs, 5 FixpointIterations, 66 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 12 TrivialYvCompositions, 4 ConcurrentYvCompositions, 7 ChoiceCompositions, 134 TotalNumberOfCompositions, 5372 MoverChecksTotal - TimeoutResultAtElement [Line: 679]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 679). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 49 locations, 1 error locations. Started 6 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 229.8s, OverallIterations: 111, TraceHistogramMax: 6, AutomataDifference: 81.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 11.6s, HoareTripleCheckerStatistics: 6733 SDtfs, 21913 SDslu, 21759 SDs, 0 SdLazy, 23832 SolverSat, 1938 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 16.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2920 GetRequests, 848 SyntacticMatches, 0 SemanticMatches, 2072 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12801 ImplicationChecksByTransitivity, 17.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37062occurred in iteration=23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 116.9s AutomataMinimizationTime, 106 MinimizatonAttempts, 2706922 StatesRemovedByMinimization, 98 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 5.6s InterpolantComputationTime, 3136 NumberOfCodeBlocks, 3104 NumberOfCodeBlocksAsserted, 178 NumberOfCheckSat, 2898 ConstructedInterpolants, 0 QuantifiedInterpolants, 181692 SizeOfPredicates, 236 NumberOfNonLiveVariables, 5167 ConjunctsInSsa, 324 ConjunctsInUnsatCore, 150 InterpolantComputations, 62 PerfectInterpolantSequences, 1114/1736 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown