/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-nondet/nondet-loop-bound-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-1d1d2b5 [2020-10-21 22:12:48,351 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-21 22:12:48,354 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-21 22:12:48,378 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-21 22:12:48,378 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-21 22:12:48,379 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-21 22:12:48,380 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-21 22:12:48,382 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-21 22:12:48,384 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-21 22:12:48,384 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-21 22:12:48,385 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-21 22:12:48,386 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-21 22:12:48,387 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-21 22:12:48,387 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-21 22:12:48,388 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-21 22:12:48,389 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-21 22:12:48,390 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-21 22:12:48,391 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-21 22:12:48,393 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-21 22:12:48,395 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-21 22:12:48,396 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-21 22:12:48,397 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-21 22:12:48,398 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-21 22:12:48,399 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-21 22:12:48,401 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-21 22:12:48,409 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-21 22:12:48,410 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-21 22:12:48,410 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-21 22:12:48,411 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-21 22:12:48,442 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-21 22:12:48,442 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-21 22:12:48,445 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-21 22:12:48,445 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-21 22:12:48,445 INFO L138 SettingsManager]: * Use SBE=true [2020-10-21 22:12:48,446 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-21 22:12:48,446 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-21 22:12:48,447 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-21 22:12:48,447 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-21 22:12:48,447 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-21 22:12:48,447 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-21 22:12:48,448 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-21 22:12:48,448 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-21 22:12:48,448 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-21 22:12:48,448 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-21 22:12:48,448 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-21 22:12:48,448 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-21 22:12:48,449 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-21 22:12:48,450 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-21 22:12:48,450 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-21 22:12:48,451 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-21 22:12:48,451 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-21 22:12:48,451 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-21 22:12:48,451 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-21 22:12:48,452 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-21 22:12:48,452 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-21 22:12:48,452 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-21 22:12:48,452 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-21 22:12:48,453 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-21 22:12:48,453 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-21 22:12:48,771 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-21 22:12:48,792 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-21 22:12:48,796 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-21 22:12:48,798 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-21 22:12:48,798 INFO L275 PluginConnector]: CDTParser initialized [2020-10-21 22:12:48,799 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-nondet/nondet-loop-bound-2.i [2020-10-21 22:12:48,878 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7e089ce0/7a69f7b9294147c08e15dbce29dcbcf0/FLAGf09d96c28 [2020-10-21 22:12:49,498 INFO L306 CDTParser]: Found 1 translation units. [2020-10-21 22:12:49,499 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-nondet/nondet-loop-bound-2.i [2020-10-21 22:12:49,516 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7e089ce0/7a69f7b9294147c08e15dbce29dcbcf0/FLAGf09d96c28 [2020-10-21 22:12:49,738 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7e089ce0/7a69f7b9294147c08e15dbce29dcbcf0 [2020-10-21 22:12:49,748 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-21 22:12:49,756 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-21 22:12:49,757 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-21 22:12:49,757 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-21 22:12:49,762 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-21 22:12:49,763 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 10:12:49" (1/1) ... [2020-10-21 22:12:49,766 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5789c24f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:12:49, skipping insertion in model container [2020-10-21 22:12:49,767 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 10:12:49" (1/1) ... [2020-10-21 22:12:49,776 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-21 22:12:49,836 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-21 22:12:50,415 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-21 22:12:50,433 INFO L203 MainTranslator]: Completed pre-run [2020-10-21 22:12:50,474 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-21 22:12:50,565 INFO L208 MainTranslator]: Completed translation [2020-10-21 22:12:50,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:12:50 WrapperNode [2020-10-21 22:12:50,567 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-21 22:12:50,568 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-21 22:12:50,568 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-21 22:12:50,575 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-21 22:12:50,585 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:12:50" (1/1) ... [2020-10-21 22:12:50,601 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:12:50" (1/1) ... [2020-10-21 22:12:50,625 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-21 22:12:50,626 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-21 22:12:50,626 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-21 22:12:50,626 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-21 22:12:50,636 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:12:50" (1/1) ... [2020-10-21 22:12:50,637 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:12:50" (1/1) ... [2020-10-21 22:12:50,640 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:12:50" (1/1) ... [2020-10-21 22:12:50,641 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:12:50" (1/1) ... [2020-10-21 22:12:50,648 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:12:50" (1/1) ... [2020-10-21 22:12:50,653 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:12:50" (1/1) ... [2020-10-21 22:12:50,656 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:12:50" (1/1) ... [2020-10-21 22:12:50,660 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-21 22:12:50,660 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-21 22:12:50,661 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-21 22:12:50,661 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-21 22:12:50,662 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:12:50" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-21 22:12:50,742 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-10-21 22:12:50,742 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-10-21 22:12:50,743 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-21 22:12:50,743 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-21 22:12:50,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-21 22:12:50,744 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-21 22:12:50,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-21 22:12:50,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-21 22:12:50,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-21 22:12:50,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-21 22:12:50,748 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-21 22:12:51,196 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-21 22:12:51,196 INFO L298 CfgBuilder]: Removed 11 assume(true) statements. [2020-10-21 22:12:51,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 10:12:51 BoogieIcfgContainer [2020-10-21 22:12:51,198 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-21 22:12:51,200 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-21 22:12:51,200 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-21 22:12:51,203 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-21 22:12:51,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 10:12:49" (1/3) ... [2020-10-21 22:12:51,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43d497a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 10:12:51, skipping insertion in model container [2020-10-21 22:12:51,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:12:50" (2/3) ... [2020-10-21 22:12:51,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43d497a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 10:12:51, skipping insertion in model container [2020-10-21 22:12:51,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 10:12:51" (3/3) ... [2020-10-21 22:12:51,207 INFO L111 eAbstractionObserver]: Analyzing ICFG nondet-loop-bound-2.i [2020-10-21 22:12:51,219 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-21 22:12:51,220 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-21 22:12:51,227 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-21 22:12:51,227 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-21 22:12:51,253 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:51,254 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:51,254 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:51,254 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:51,254 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:51,255 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:51,255 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:51,256 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:51,256 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:51,256 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:51,257 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:51,257 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:51,258 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:51,259 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:51,259 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:51,259 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:51,259 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:51,260 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:51,260 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:51,260 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:51,261 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:51,271 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:51,272 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:51,272 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:51,272 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:51,272 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:51,280 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:51,281 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:51,281 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:51,281 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:51,282 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:51,282 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:51,282 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:51,282 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:51,284 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-21 22:12:51,298 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-21 22:12:51,317 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-21 22:12:51,317 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-21 22:12:51,317 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-21 22:12:51,317 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-21 22:12:51,318 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-21 22:12:51,318 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-21 22:12:51,318 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-21 22:12:51,318 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-21 22:12:51,330 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-21 22:12:51,334 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 67 transitions, 144 flow [2020-10-21 22:12:51,336 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 67 transitions, 144 flow [2020-10-21 22:12:51,339 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 69 places, 67 transitions, 144 flow [2020-10-21 22:12:51,385 INFO L129 PetriNetUnfolder]: 5/77 cut-off events. [2020-10-21 22:12:51,386 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-21 22:12:51,391 INFO L80 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 77 events. 5/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 109 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 57. Up to 4 conditions per place. [2020-10-21 22:12:51,394 INFO L116 LiptonReduction]: Number of co-enabled transitions 832 [2020-10-21 22:12:52,736 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-10-21 22:12:52,926 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 53 [2020-10-21 22:12:53,436 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 97 [2020-10-21 22:12:53,678 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 85 [2020-10-21 22:12:53,808 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-21 22:12:53,962 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-21 22:12:53,966 INFO L131 LiptonReduction]: Checked pairs total: 793 [2020-10-21 22:12:53,967 INFO L133 LiptonReduction]: Total number of compositions: 69 [2020-10-21 22:12:53,974 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 18 places, 12 transitions, 34 flow [2020-10-21 22:12:53,985 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 44 states. [2020-10-21 22:12:53,988 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-10-21 22:12:53,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-21 22:12:53,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:12:53,995 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-21 22:12:53,995 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 22:12:54,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:12:54,001 INFO L82 PathProgramCache]: Analyzing trace with hash 270931, now seen corresponding path program 1 times [2020-10-21 22:12:54,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:12:54,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540776047] [2020-10-21 22:12:54,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:12:54,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:12:54,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:12:54,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540776047] [2020-10-21 22:12:54,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:12:54,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-21 22:12:54,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448086790] [2020-10-21 22:12:54,208 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 22:12:54,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:12:54,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 22:12:54,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 22:12:54,228 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 3 states. [2020-10-21 22:12:54,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:12:54,267 INFO L93 Difference]: Finished difference Result 35 states and 59 transitions. [2020-10-21 22:12:54,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 22:12:54,269 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-21 22:12:54,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:12:54,280 INFO L225 Difference]: With dead ends: 35 [2020-10-21 22:12:54,280 INFO L226 Difference]: Without dead ends: 31 [2020-10-21 22:12:54,282 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 [2020-10-21 22:12:54,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-21 22:12:54,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-21 22:12:54,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-21 22:12:54,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 51 transitions. [2020-10-21 22:12:54,320 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 51 transitions. Word has length 3 [2020-10-21 22:12:54,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:12:54,321 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 51 transitions. [2020-10-21 22:12:54,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 22:12:54,321 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 51 transitions. [2020-10-21 22:12:54,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-21 22:12:54,322 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:12:54,322 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:12:54,323 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-21 22:12:54,323 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 22:12:54,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:12:54,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1075906219, now seen corresponding path program 1 times [2020-10-21 22:12:54,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:12:54,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147770433] [2020-10-21 22:12:54,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:12:54,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:12:54,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:12:54,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147770433] [2020-10-21 22:12:54,431 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:12:54,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-21 22:12:54,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472729452] [2020-10-21 22:12:54,434 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-21 22:12:54,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:12:54,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-21 22:12:54,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-21 22:12:54,435 INFO L87 Difference]: Start difference. First operand 31 states and 51 transitions. Second operand 4 states. [2020-10-21 22:12:54,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:12:54,458 INFO L93 Difference]: Finished difference Result 26 states and 42 transitions. [2020-10-21 22:12:54,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-21 22:12:54,459 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-21 22:12:54,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:12:54,460 INFO L225 Difference]: With dead ends: 26 [2020-10-21 22:12:54,460 INFO L226 Difference]: Without dead ends: 24 [2020-10-21 22:12:54,461 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 [2020-10-21 22:12:54,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-21 22:12:54,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-10-21 22:12:54,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-21 22:12:54,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 39 transitions. [2020-10-21 22:12:54,465 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 39 transitions. Word has length 7 [2020-10-21 22:12:54,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:12:54,466 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 39 transitions. [2020-10-21 22:12:54,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-21 22:12:54,466 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 39 transitions. [2020-10-21 22:12:54,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-21 22:12:54,467 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:12:54,467 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-10-21 22:12:54,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-21 22:12:54,467 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 22:12:54,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:12:54,468 INFO L82 PathProgramCache]: Analyzing trace with hash -1006649777, now seen corresponding path program 1 times [2020-10-21 22:12:54,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:12:54,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51269680] [2020-10-21 22:12:54,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:12:54,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-21 22:12:54,497 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-21 22:12:54,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-21 22:12:54,518 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-21 22:12:54,548 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-21 22:12:54,548 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-21 22:12:54,549 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-21 22:12:54,549 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-21 22:12:54,551 WARN L371 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-21 22:12:54,551 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-10-21 22:12:54,560 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:54,560 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:54,560 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:54,560 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:54,561 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:54,561 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:54,561 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:54,561 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:54,561 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:54,562 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:54,562 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:54,562 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:54,562 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:54,562 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:54,563 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:54,563 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:54,563 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:54,563 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:54,564 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:54,564 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:54,564 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:54,564 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:54,564 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:54,565 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:54,565 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:54,565 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:54,565 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:54,565 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:54,566 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:54,566 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:54,566 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:54,566 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:54,567 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:54,567 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:54,567 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:54,567 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:54,567 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:54,567 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:54,568 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:54,568 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:54,568 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:54,568 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:54,569 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:54,569 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:54,569 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:54,569 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:54,570 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:54,574 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:54,575 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:54,575 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:54,575 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:54,575 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:54,577 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:54,578 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:54,578 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:54,578 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:54,578 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:54,578 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:54,579 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:54,579 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:54,581 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:54,582 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:54,582 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:54,582 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:54,582 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:54,582 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:54,583 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:54,583 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:54,584 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-21 22:12:54,584 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-21 22:12:54,585 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-21 22:12:54,585 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-21 22:12:54,585 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-21 22:12:54,585 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-21 22:12:54,585 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-21 22:12:54,585 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-21 22:12:54,586 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-21 22:12:54,586 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-21 22:12:54,588 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-21 22:12:54,588 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 88 transitions, 200 flow [2020-10-21 22:12:54,589 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 92 places, 88 transitions, 200 flow [2020-10-21 22:12:54,589 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 92 places, 88 transitions, 200 flow [2020-10-21 22:12:54,613 INFO L129 PetriNetUnfolder]: 6/98 cut-off events. [2020-10-21 22:12:54,613 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-21 22:12:54,615 INFO L80 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 98 events. 6/98 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 145 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 107. Up to 6 conditions per place. [2020-10-21 22:12:54,618 INFO L116 LiptonReduction]: Number of co-enabled transitions 1220 [2020-10-21 22:12:56,124 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2020-10-21 22:12:56,245 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-21 22:12:56,528 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-10-21 22:12:56,641 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-10-21 22:12:56,794 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-21 22:12:57,060 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 90 [2020-10-21 22:12:57,066 INFO L131 LiptonReduction]: Checked pairs total: 1551 [2020-10-21 22:12:57,066 INFO L133 LiptonReduction]: Total number of compositions: 86 [2020-10-21 22:12:57,066 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 66 flow [2020-10-21 22:12:57,080 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 224 states. [2020-10-21 22:12:57,081 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states. [2020-10-21 22:12:57,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-21 22:12:57,081 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:12:57,081 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-21 22:12:57,082 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:12:57,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:12:57,082 INFO L82 PathProgramCache]: Analyzing trace with hash 464008, now seen corresponding path program 1 times [2020-10-21 22:12:57,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:12:57,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244941561] [2020-10-21 22:12:57,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:12:57,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:12:57,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:12:57,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244941561] [2020-10-21 22:12:57,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:12:57,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-21 22:12:57,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80380014] [2020-10-21 22:12:57,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 22:12:57,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:12:57,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 22:12:57,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 22:12:57,137 INFO L87 Difference]: Start difference. First operand 224 states. Second operand 3 states. [2020-10-21 22:12:57,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:12:57,184 INFO L93 Difference]: Finished difference Result 185 states and 459 transitions. [2020-10-21 22:12:57,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 22:12:57,185 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-21 22:12:57,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:12:57,190 INFO L225 Difference]: With dead ends: 185 [2020-10-21 22:12:57,191 INFO L226 Difference]: Without dead ends: 171 [2020-10-21 22:12:57,191 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 [2020-10-21 22:12:57,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-21 22:12:57,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2020-10-21 22:12:57,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-21 22:12:57,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 418 transitions. [2020-10-21 22:12:57,219 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 418 transitions. Word has length 3 [2020-10-21 22:12:57,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:12:57,219 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 418 transitions. [2020-10-21 22:12:57,220 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 22:12:57,220 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 418 transitions. [2020-10-21 22:12:57,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-21 22:12:57,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:12:57,221 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:12:57,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-21 22:12:57,221 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:12:57,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:12:57,222 INFO L82 PathProgramCache]: Analyzing trace with hash 2038027130, now seen corresponding path program 1 times [2020-10-21 22:12:57,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:12:57,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816006446] [2020-10-21 22:12:57,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:12:57,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:12:57,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:12:57,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816006446] [2020-10-21 22:12:57,285 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:12:57,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 22:12:57,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916156431] [2020-10-21 22:12:57,285 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 22:12:57,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:12:57,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 22:12:57,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 22:12:57,286 INFO L87 Difference]: Start difference. First operand 171 states and 418 transitions. Second operand 5 states. [2020-10-21 22:12:57,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:12:57,396 INFO L93 Difference]: Finished difference Result 205 states and 460 transitions. [2020-10-21 22:12:57,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 22:12:57,397 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-21 22:12:57,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:12:57,400 INFO L225 Difference]: With dead ends: 205 [2020-10-21 22:12:57,400 INFO L226 Difference]: Without dead ends: 201 [2020-10-21 22:12:57,400 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 [2020-10-21 22:12:57,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-10-21 22:12:57,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 162. [2020-10-21 22:12:57,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-21 22:12:57,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 399 transitions. [2020-10-21 22:12:57,420 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 399 transitions. Word has length 9 [2020-10-21 22:12:57,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:12:57,420 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 399 transitions. [2020-10-21 22:12:57,420 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 22:12:57,421 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 399 transitions. [2020-10-21 22:12:57,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 22:12:57,422 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:12:57,422 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:12:57,422 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-21 22:12:57,423 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:12:57,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:12:57,423 INFO L82 PathProgramCache]: Analyzing trace with hash -460391635, now seen corresponding path program 1 times [2020-10-21 22:12:57,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:12:57,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042977522] [2020-10-21 22:12:57,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:12:57,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:12:57,475 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 22:12:57,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042977522] [2020-10-21 22:12:57,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:12:57,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 22:12:57,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726073865] [2020-10-21 22:12:57,477 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 22:12:57,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:12:57,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 22:12:57,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 22:12:57,478 INFO L87 Difference]: Start difference. First operand 162 states and 399 transitions. Second operand 5 states. [2020-10-21 22:12:57,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:12:57,564 INFO L93 Difference]: Finished difference Result 189 states and 423 transitions. [2020-10-21 22:12:57,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 22:12:57,565 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-21 22:12:57,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:12:57,567 INFO L225 Difference]: With dead ends: 189 [2020-10-21 22:12:57,567 INFO L226 Difference]: Without dead ends: 185 [2020-10-21 22:12:57,568 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 [2020-10-21 22:12:57,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-21 22:12:57,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 153. [2020-10-21 22:12:57,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-21 22:12:57,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 367 transitions. [2020-10-21 22:12:57,581 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 367 transitions. Word has length 13 [2020-10-21 22:12:57,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:12:57,583 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 367 transitions. [2020-10-21 22:12:57,583 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 22:12:57,583 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 367 transitions. [2020-10-21 22:12:57,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-21 22:12:57,584 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:12:57,584 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:12:57,585 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-21 22:12:57,585 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:12:57,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:12:57,585 INFO L82 PathProgramCache]: Analyzing trace with hash -1390371680, now seen corresponding path program 1 times [2020-10-21 22:12:57,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:12:57,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567424480] [2020-10-21 22:12:57,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:12:57,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-21 22:12:57,605 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-21 22:12:57,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-21 22:12:57,620 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-21 22:12:57,628 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-21 22:12:57,628 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-21 22:12:57,628 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-21 22:12:57,629 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-21 22:12:57,629 WARN L371 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-21 22:12:57,630 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-10-21 22:12:57,653 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,653 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,653 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,653 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,654 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,654 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,654 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,654 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,654 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,655 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,655 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,655 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,655 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,655 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,655 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,656 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,656 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,656 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,656 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,656 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,656 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,657 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,657 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,657 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,657 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,658 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,658 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,658 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,658 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,658 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,659 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,659 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,659 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,659 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,659 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,660 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,660 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,660 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,660 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,660 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,661 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,661 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,661 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,661 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,661 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,661 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,662 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,662 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,662 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,662 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,663 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,663 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,663 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,663 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,663 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,663 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,664 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,664 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,664 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,664 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,664 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,665 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,665 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,665 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,665 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,665 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,666 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,666 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,670 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,671 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,671 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,671 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,671 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,673 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,673 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,673 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,673 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,674 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,675 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,675 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,675 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,676 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,676 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,676 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,676 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,676 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,678 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,678 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,678 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,679 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,679 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,679 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,679 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,679 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,681 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,681 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,681 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,681 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,681 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,682 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,682 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,682 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:12:57,684 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-21 22:12:57,684 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-21 22:12:57,684 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-21 22:12:57,685 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-21 22:12:57,685 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-21 22:12:57,685 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-21 22:12:57,685 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-21 22:12:57,685 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-21 22:12:57,685 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-21 22:12:57,685 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-21 22:12:57,688 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-21 22:12:57,688 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 115 places, 109 transitions, 260 flow [2020-10-21 22:12:57,688 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 115 places, 109 transitions, 260 flow [2020-10-21 22:12:57,689 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 115 places, 109 transitions, 260 flow [2020-10-21 22:12:57,712 INFO L129 PetriNetUnfolder]: 7/119 cut-off events. [2020-10-21 22:12:57,712 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-10-21 22:12:57,714 INFO L80 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 119 events. 7/119 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 186 event pairs, 0 based on Foata normal form. 0/107 useless extension candidates. Maximal degree in co-relation 133. Up to 8 conditions per place. [2020-10-21 22:12:57,717 INFO L116 LiptonReduction]: Number of co-enabled transitions 1668 [2020-10-21 22:12:59,828 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 96 [2020-10-21 22:12:59,962 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-21 22:13:00,254 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 90 [2020-10-21 22:13:00,375 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-21 22:13:00,381 INFO L131 LiptonReduction]: Checked pairs total: 2216 [2020-10-21 22:13:00,382 INFO L133 LiptonReduction]: Total number of compositions: 107 [2020-10-21 22:13:00,382 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 27 transitions, 96 flow [2020-10-21 22:13:00,411 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 683 states. [2020-10-21 22:13:00,411 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states. [2020-10-21 22:13:00,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-21 22:13:00,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:13:00,411 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-21 22:13:00,412 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:13:00,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:13:00,412 INFO L82 PathProgramCache]: Analyzing trace with hash 698655, now seen corresponding path program 1 times [2020-10-21 22:13:00,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:13:00,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696008348] [2020-10-21 22:13:00,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:13:00,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:13:00,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:13:00,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696008348] [2020-10-21 22:13:00,465 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:13:00,465 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-21 22:13:00,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887205146] [2020-10-21 22:13:00,466 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 22:13:00,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:13:00,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 22:13:00,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 22:13:00,467 INFO L87 Difference]: Start difference. First operand 683 states. Second operand 3 states. [2020-10-21 22:13:00,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:13:00,499 INFO L93 Difference]: Finished difference Result 600 states and 1886 transitions. [2020-10-21 22:13:00,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 22:13:00,500 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-21 22:13:00,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:13:00,506 INFO L225 Difference]: With dead ends: 600 [2020-10-21 22:13:00,506 INFO L226 Difference]: Without dead ends: 559 [2020-10-21 22:13:00,507 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 [2020-10-21 22:13:00,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2020-10-21 22:13:00,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 559. [2020-10-21 22:13:00,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 559 states. [2020-10-21 22:13:00,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 1737 transitions. [2020-10-21 22:13:00,546 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 1737 transitions. Word has length 3 [2020-10-21 22:13:00,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:13:00,546 INFO L481 AbstractCegarLoop]: Abstraction has 559 states and 1737 transitions. [2020-10-21 22:13:00,546 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 22:13:00,547 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 1737 transitions. [2020-10-21 22:13:00,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-21 22:13:00,547 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:13:00,547 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:13:00,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-21 22:13:00,548 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:13:00,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:13:00,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1614105147, now seen corresponding path program 1 times [2020-10-21 22:13:00,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:13:00,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984892992] [2020-10-21 22:13:00,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:13:00,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:13:00,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:13:00,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984892992] [2020-10-21 22:13:00,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:13:00,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 22:13:00,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571847490] [2020-10-21 22:13:00,614 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 22:13:00,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:13:00,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 22:13:00,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 22:13:00,614 INFO L87 Difference]: Start difference. First operand 559 states and 1737 transitions. Second operand 5 states. [2020-10-21 22:13:00,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:13:00,741 INFO L93 Difference]: Finished difference Result 817 states and 2317 transitions. [2020-10-21 22:13:00,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 22:13:00,742 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-21 22:13:00,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:13:00,750 INFO L225 Difference]: With dead ends: 817 [2020-10-21 22:13:00,751 INFO L226 Difference]: Without dead ends: 812 [2020-10-21 22:13:00,751 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 [2020-10-21 22:13:00,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2020-10-21 22:13:00,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 585. [2020-10-21 22:13:00,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 585 states. [2020-10-21 22:13:00,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 1832 transitions. [2020-10-21 22:13:00,782 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 1832 transitions. Word has length 9 [2020-10-21 22:13:00,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:13:00,782 INFO L481 AbstractCegarLoop]: Abstraction has 585 states and 1832 transitions. [2020-10-21 22:13:00,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 22:13:00,782 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 1832 transitions. [2020-10-21 22:13:00,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 22:13:00,788 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:13:00,789 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:13:00,789 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-21 22:13:00,789 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:13:00,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:13:00,789 INFO L82 PathProgramCache]: Analyzing trace with hash 222037333, now seen corresponding path program 1 times [2020-10-21 22:13:00,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:13:00,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132847031] [2020-10-21 22:13:00,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:13:00,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:13:00,870 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 22:13:00,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132847031] [2020-10-21 22:13:00,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:13:00,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 22:13:00,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192217384] [2020-10-21 22:13:00,874 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 22:13:00,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:13:00,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 22:13:00,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 22:13:00,875 INFO L87 Difference]: Start difference. First operand 585 states and 1832 transitions. Second operand 5 states. [2020-10-21 22:13:00,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:13:00,982 INFO L93 Difference]: Finished difference Result 843 states and 2406 transitions. [2020-10-21 22:13:00,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 22:13:00,982 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-21 22:13:00,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:13:00,989 INFO L225 Difference]: With dead ends: 843 [2020-10-21 22:13:00,989 INFO L226 Difference]: Without dead ends: 836 [2020-10-21 22:13:00,990 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 [2020-10-21 22:13:00,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2020-10-21 22:13:01,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 611. [2020-10-21 22:13:01,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2020-10-21 22:13:01,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 1906 transitions. [2020-10-21 22:13:01,016 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 1906 transitions. Word has length 13 [2020-10-21 22:13:01,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:13:01,016 INFO L481 AbstractCegarLoop]: Abstraction has 611 states and 1906 transitions. [2020-10-21 22:13:01,016 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 22:13:01,017 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 1906 transitions. [2020-10-21 22:13:01,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-21 22:13:01,018 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:13:01,018 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:13:01,018 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-21 22:13:01,018 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:13:01,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:13:01,018 INFO L82 PathProgramCache]: Analyzing trace with hash -24425909, now seen corresponding path program 1 times [2020-10-21 22:13:01,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:13:01,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450903084] [2020-10-21 22:13:01,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:13:01,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:13:01,078 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:13:01,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450903084] [2020-10-21 22:13:01,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858886177] [2020-10-21 22:13:01,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:13:01,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:13:01,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-21 22:13:01,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:13:01,241 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:13:01,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:13:01,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-21 22:13:01,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085993533] [2020-10-21 22:13:01,242 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-21 22:13:01,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:13:01,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-21 22:13:01,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-21 22:13:01,243 INFO L87 Difference]: Start difference. First operand 611 states and 1906 transitions. Second operand 12 states. [2020-10-21 22:13:01,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:13:01,529 INFO L93 Difference]: Finished difference Result 1059 states and 2818 transitions. [2020-10-21 22:13:01,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 22:13:01,529 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-21 22:13:01,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:13:01,537 INFO L225 Difference]: With dead ends: 1059 [2020-10-21 22:13:01,537 INFO L226 Difference]: Without dead ends: 1052 [2020-10-21 22:13:01,538 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-21 22:13:01,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2020-10-21 22:13:01,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 591. [2020-10-21 22:13:01,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states. [2020-10-21 22:13:01,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 1840 transitions. [2020-10-21 22:13:01,565 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 1840 transitions. Word has length 15 [2020-10-21 22:13:01,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:13:01,566 INFO L481 AbstractCegarLoop]: Abstraction has 591 states and 1840 transitions. [2020-10-21 22:13:01,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-21 22:13:01,566 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 1840 transitions. [2020-10-21 22:13:01,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-21 22:13:01,567 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:13:01,567 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:13:01,780 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-10-21 22:13:01,781 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:13:01,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:13:01,781 INFO L82 PathProgramCache]: Analyzing trace with hash -1370486663, now seen corresponding path program 2 times [2020-10-21 22:13:01,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:13:01,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322336259] [2020-10-21 22:13:01,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:13:01,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:13:01,841 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 22:13:01,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322336259] [2020-10-21 22:13:01,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:13:01,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 22:13:01,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388167155] [2020-10-21 22:13:01,842 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 22:13:01,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:13:01,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 22:13:01,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 22:13:01,843 INFO L87 Difference]: Start difference. First operand 591 states and 1840 transitions. Second operand 7 states. [2020-10-21 22:13:02,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:13:02,118 INFO L93 Difference]: Finished difference Result 1053 states and 2807 transitions. [2020-10-21 22:13:02,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 22:13:02,119 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-21 22:13:02,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:13:02,127 INFO L225 Difference]: With dead ends: 1053 [2020-10-21 22:13:02,127 INFO L226 Difference]: Without dead ends: 1045 [2020-10-21 22:13:02,128 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 [2020-10-21 22:13:02,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2020-10-21 22:13:02,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 536. [2020-10-21 22:13:02,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 536 states. [2020-10-21 22:13:02,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 1688 transitions. [2020-10-21 22:13:02,157 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 1688 transitions. Word has length 15 [2020-10-21 22:13:02,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:13:02,158 INFO L481 AbstractCegarLoop]: Abstraction has 536 states and 1688 transitions. [2020-10-21 22:13:02,158 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 22:13:02,158 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 1688 transitions. [2020-10-21 22:13:02,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-21 22:13:02,159 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:13:02,159 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:13:02,159 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-21 22:13:02,159 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:13:02,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:13:02,160 INFO L82 PathProgramCache]: Analyzing trace with hash 1795391144, now seen corresponding path program 1 times [2020-10-21 22:13:02,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:13:02,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557770084] [2020-10-21 22:13:02,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:13:02,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:13:02,242 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 22:13:02,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557770084] [2020-10-21 22:13:02,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:13:02,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 22:13:02,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658483222] [2020-10-21 22:13:02,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 22:13:02,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:13:02,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 22:13:02,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 22:13:02,245 INFO L87 Difference]: Start difference. First operand 536 states and 1688 transitions. Second operand 5 states. [2020-10-21 22:13:02,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:13:02,344 INFO L93 Difference]: Finished difference Result 736 states and 2123 transitions. [2020-10-21 22:13:02,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 22:13:02,344 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-21 22:13:02,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:13:02,350 INFO L225 Difference]: With dead ends: 736 [2020-10-21 22:13:02,350 INFO L226 Difference]: Without dead ends: 728 [2020-10-21 22:13:02,355 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 [2020-10-21 22:13:02,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2020-10-21 22:13:02,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 549. [2020-10-21 22:13:02,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 549 states. [2020-10-21 22:13:02,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 1684 transitions. [2020-10-21 22:13:02,379 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 1684 transitions. Word has length 17 [2020-10-21 22:13:02,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:13:02,380 INFO L481 AbstractCegarLoop]: Abstraction has 549 states and 1684 transitions. [2020-10-21 22:13:02,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 22:13:02,380 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 1684 transitions. [2020-10-21 22:13:02,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-21 22:13:02,381 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:13:02,381 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:13:02,381 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-21 22:13:02,382 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:13:02,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:13:02,382 INFO L82 PathProgramCache]: Analyzing trace with hash -181443140, now seen corresponding path program 1 times [2020-10-21 22:13:02,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:13:02,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966686986] [2020-10-21 22:13:02,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:13:02,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-21 22:13:02,405 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-21 22:13:02,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-21 22:13:02,421 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-21 22:13:02,441 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-21 22:13:02,442 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-21 22:13:02,442 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-21 22:13:02,442 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-21 22:13:02,443 WARN L371 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-21 22:13:02,444 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-10-21 22:13:02,461 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,462 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,462 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,462 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,462 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,462 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,462 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,463 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,463 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,463 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,463 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,463 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,464 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,464 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,464 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,464 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,464 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,464 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,465 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,465 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,465 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,465 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,465 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,465 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,465 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,467 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,467 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,467 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,468 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,468 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,468 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,468 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,468 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,468 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,468 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,469 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,469 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,469 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,469 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,469 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,469 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,469 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,470 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,470 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,470 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,470 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,470 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,470 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,471 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,471 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,471 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,471 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,471 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,471 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,472 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,472 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,472 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,472 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,472 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,473 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,473 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,473 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,473 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,473 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,473 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,473 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,474 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,474 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,474 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,474 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,474 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,474 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,475 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,475 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,475 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,475 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,475 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,475 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,475 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,476 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,476 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,476 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,476 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,476 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,477 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,477 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,477 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,477 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,477 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,479 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,479 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,479 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,480 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,480 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,482 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,482 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,482 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,482 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,482 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,484 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,484 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,484 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,485 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,485 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,486 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,486 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,487 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,487 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,487 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,487 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,487 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,487 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,489 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,490 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,490 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,490 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,490 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,490 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,490 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,491 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,492 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,493 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,493 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,493 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,493 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,493 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,493 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,494 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,495 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,495 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,495 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,496 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,496 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,496 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,496 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,496 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:02,497 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-21 22:13:02,498 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-21 22:13:02,498 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-21 22:13:02,498 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-21 22:13:02,498 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-21 22:13:02,498 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-21 22:13:02,499 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-21 22:13:02,499 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-21 22:13:02,499 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-21 22:13:02,499 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-21 22:13:02,501 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-21 22:13:02,501 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 138 places, 130 transitions, 324 flow [2020-10-21 22:13:02,502 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 138 places, 130 transitions, 324 flow [2020-10-21 22:13:02,502 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 138 places, 130 transitions, 324 flow [2020-10-21 22:13:02,548 INFO L129 PetriNetUnfolder]: 8/140 cut-off events. [2020-10-21 22:13:02,549 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-10-21 22:13:02,553 INFO L80 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 140 events. 8/140 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 235 event pairs, 0 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 160. Up to 10 conditions per place. [2020-10-21 22:13:02,559 INFO L116 LiptonReduction]: Number of co-enabled transitions 2176 [2020-10-21 22:13:03,848 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-10-21 22:13:04,742 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2020-10-21 22:13:05,061 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 94 [2020-10-21 22:13:05,192 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-21 22:13:05,202 INFO L131 LiptonReduction]: Checked pairs total: 3275 [2020-10-21 22:13:05,202 INFO L133 LiptonReduction]: Total number of compositions: 134 [2020-10-21 22:13:05,203 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 51 places, 33 transitions, 130 flow [2020-10-21 22:13:05,323 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 2060 states. [2020-10-21 22:13:05,323 INFO L276 IsEmpty]: Start isEmpty. Operand 2060 states. [2020-10-21 22:13:05,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-21 22:13:05,324 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:13:05,324 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-21 22:13:05,324 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]=== [2020-10-21 22:13:05,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:13:05,324 INFO L82 PathProgramCache]: Analyzing trace with hash 980800, now seen corresponding path program 1 times [2020-10-21 22:13:05,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:13:05,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604762710] [2020-10-21 22:13:05,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:13:05,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:13:05,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:13:05,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604762710] [2020-10-21 22:13:05,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:13:05,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-21 22:13:05,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925943887] [2020-10-21 22:13:05,347 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 22:13:05,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:13:05,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 22:13:05,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 22:13:05,348 INFO L87 Difference]: Start difference. First operand 2060 states. Second operand 3 states. [2020-10-21 22:13:05,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:13:05,393 INFO L93 Difference]: Finished difference Result 1889 states and 7217 transitions. [2020-10-21 22:13:05,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 22:13:05,394 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-21 22:13:05,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:13:05,410 INFO L225 Difference]: With dead ends: 1889 [2020-10-21 22:13:05,410 INFO L226 Difference]: Without dead ends: 1767 [2020-10-21 22:13:05,411 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 [2020-10-21 22:13:05,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2020-10-21 22:13:05,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1767. [2020-10-21 22:13:05,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1767 states. [2020-10-21 22:13:05,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1767 states to 1767 states and 6690 transitions. [2020-10-21 22:13:05,521 INFO L78 Accepts]: Start accepts. Automaton has 1767 states and 6690 transitions. Word has length 3 [2020-10-21 22:13:05,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:13:05,521 INFO L481 AbstractCegarLoop]: Abstraction has 1767 states and 6690 transitions. [2020-10-21 22:13:05,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 22:13:05,522 INFO L276 IsEmpty]: Start isEmpty. Operand 1767 states and 6690 transitions. [2020-10-21 22:13:05,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-21 22:13:05,522 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:13:05,522 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:13:05,522 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-21 22:13:05,523 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]=== [2020-10-21 22:13:05,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:13:05,523 INFO L82 PathProgramCache]: Analyzing trace with hash -1761952613, now seen corresponding path program 1 times [2020-10-21 22:13:05,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:13:05,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722349761] [2020-10-21 22:13:05,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:13:05,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:13:05,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:13:05,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722349761] [2020-10-21 22:13:05,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:13:05,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 22:13:05,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058788152] [2020-10-21 22:13:05,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 22:13:05,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:13:05,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 22:13:05,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 22:13:05,565 INFO L87 Difference]: Start difference. First operand 1767 states and 6690 transitions. Second operand 5 states. [2020-10-21 22:13:05,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:13:05,681 INFO L93 Difference]: Finished difference Result 2905 states and 10138 transitions. [2020-10-21 22:13:05,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 22:13:05,682 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-21 22:13:05,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:13:05,706 INFO L225 Difference]: With dead ends: 2905 [2020-10-21 22:13:05,706 INFO L226 Difference]: Without dead ends: 2899 [2020-10-21 22:13:05,708 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 [2020-10-21 22:13:05,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2899 states. [2020-10-21 22:13:05,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2899 to 1966. [2020-10-21 22:13:05,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1966 states. [2020-10-21 22:13:05,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1966 states to 1966 states and 7503 transitions. [2020-10-21 22:13:05,805 INFO L78 Accepts]: Start accepts. Automaton has 1966 states and 7503 transitions. Word has length 9 [2020-10-21 22:13:05,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:13:05,805 INFO L481 AbstractCegarLoop]: Abstraction has 1966 states and 7503 transitions. [2020-10-21 22:13:05,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 22:13:05,806 INFO L276 IsEmpty]: Start isEmpty. Operand 1966 states and 7503 transitions. [2020-10-21 22:13:05,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 22:13:05,806 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:13:05,806 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:13:05,807 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-21 22:13:05,807 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]=== [2020-10-21 22:13:05,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:13:05,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1954545134, now seen corresponding path program 1 times [2020-10-21 22:13:05,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:13:05,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889792297] [2020-10-21 22:13:05,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:13:05,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:13:05,856 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 22:13:05,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889792297] [2020-10-21 22:13:05,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:13:05,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 22:13:05,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612463382] [2020-10-21 22:13:05,858 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 22:13:05,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:13:05,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 22:13:05,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 22:13:05,858 INFO L87 Difference]: Start difference. First operand 1966 states and 7503 transitions. Second operand 5 states. [2020-10-21 22:13:05,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:13:05,952 INFO L93 Difference]: Finished difference Result 3204 states and 11312 transitions. [2020-10-21 22:13:05,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 22:13:05,952 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-21 22:13:05,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:13:05,975 INFO L225 Difference]: With dead ends: 3204 [2020-10-21 22:13:05,975 INFO L226 Difference]: Without dead ends: 3194 [2020-10-21 22:13:05,976 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 [2020-10-21 22:13:05,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3194 states. [2020-10-21 22:13:06,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3194 to 2200. [2020-10-21 22:13:06,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2200 states. [2020-10-21 22:13:06,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2200 states to 2200 states and 8453 transitions. [2020-10-21 22:13:06,064 INFO L78 Accepts]: Start accepts. Automaton has 2200 states and 8453 transitions. Word has length 13 [2020-10-21 22:13:06,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:13:06,064 INFO L481 AbstractCegarLoop]: Abstraction has 2200 states and 8453 transitions. [2020-10-21 22:13:06,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 22:13:06,065 INFO L276 IsEmpty]: Start isEmpty. Operand 2200 states and 8453 transitions. [2020-10-21 22:13:06,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-21 22:13:06,065 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:13:06,065 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:13:06,066 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-21 22:13:06,066 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]=== [2020-10-21 22:13:06,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:13:06,066 INFO L82 PathProgramCache]: Analyzing trace with hash 1417153478, now seen corresponding path program 1 times [2020-10-21 22:13:06,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:13:06,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733012187] [2020-10-21 22:13:06,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:13:06,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:13:06,117 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 22:13:06,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733012187] [2020-10-21 22:13:06,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:13:06,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 22:13:06,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600365605] [2020-10-21 22:13:06,118 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 22:13:06,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:13:06,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 22:13:06,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 22:13:06,119 INFO L87 Difference]: Start difference. First operand 2200 states and 8453 transitions. Second operand 7 states. [2020-10-21 22:13:06,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:13:06,400 INFO L93 Difference]: Finished difference Result 4556 states and 14911 transitions. [2020-10-21 22:13:06,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 22:13:06,400 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-21 22:13:06,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:13:06,421 INFO L225 Difference]: With dead ends: 4556 [2020-10-21 22:13:06,422 INFO L226 Difference]: Without dead ends: 4546 [2020-10-21 22:13:06,422 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 [2020-10-21 22:13:06,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4546 states. [2020-10-21 22:13:06,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4546 to 2157. [2020-10-21 22:13:06,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2157 states. [2020-10-21 22:13:06,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2157 states to 2157 states and 8278 transitions. [2020-10-21 22:13:06,583 INFO L78 Accepts]: Start accepts. Automaton has 2157 states and 8278 transitions. Word has length 15 [2020-10-21 22:13:06,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:13:06,583 INFO L481 AbstractCegarLoop]: Abstraction has 2157 states and 8278 transitions. [2020-10-21 22:13:06,583 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 22:13:06,584 INFO L276 IsEmpty]: Start isEmpty. Operand 2157 states and 8278 transitions. [2020-10-21 22:13:06,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-21 22:13:06,584 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:13:06,584 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:13:06,584 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-21 22:13:06,585 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]=== [2020-10-21 22:13:06,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:13:06,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1419653318, now seen corresponding path program 2 times [2020-10-21 22:13:06,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:13:06,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491130657] [2020-10-21 22:13:06,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:13:06,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:13:06,661 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 22:13:06,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491130657] [2020-10-21 22:13:06,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:13:06,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 22:13:06,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407749960] [2020-10-21 22:13:06,662 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 22:13:06,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:13:06,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 22:13:06,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 22:13:06,662 INFO L87 Difference]: Start difference. First operand 2157 states and 8278 transitions. Second operand 7 states. [2020-10-21 22:13:06,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:13:06,948 INFO L93 Difference]: Finished difference Result 4612 states and 15111 transitions. [2020-10-21 22:13:06,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 22:13:06,949 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-21 22:13:06,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:13:06,971 INFO L225 Difference]: With dead ends: 4612 [2020-10-21 22:13:06,971 INFO L226 Difference]: Without dead ends: 4601 [2020-10-21 22:13:06,973 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-21 22:13:07,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4601 states. [2020-10-21 22:13:07,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4601 to 2035. [2020-10-21 22:13:07,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2035 states. [2020-10-21 22:13:07,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2035 states to 2035 states and 7845 transitions. [2020-10-21 22:13:07,075 INFO L78 Accepts]: Start accepts. Automaton has 2035 states and 7845 transitions. Word has length 15 [2020-10-21 22:13:07,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:13:07,075 INFO L481 AbstractCegarLoop]: Abstraction has 2035 states and 7845 transitions. [2020-10-21 22:13:07,075 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 22:13:07,076 INFO L276 IsEmpty]: Start isEmpty. Operand 2035 states and 7845 transitions. [2020-10-21 22:13:07,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-21 22:13:07,076 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:13:07,077 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:13:07,077 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-21 22:13:07,077 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]=== [2020-10-21 22:13:07,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:13:07,077 INFO L82 PathProgramCache]: Analyzing trace with hash 795193170, now seen corresponding path program 1 times [2020-10-21 22:13:07,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:13:07,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677396470] [2020-10-21 22:13:07,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:13:07,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:13:07,142 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 22:13:07,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677396470] [2020-10-21 22:13:07,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:13:07,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 22:13:07,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303222113] [2020-10-21 22:13:07,143 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 22:13:07,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:13:07,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 22:13:07,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 22:13:07,144 INFO L87 Difference]: Start difference. First operand 2035 states and 7845 transitions. Second operand 5 states. [2020-10-21 22:13:07,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:13:07,263 INFO L93 Difference]: Finished difference Result 3265 states and 11681 transitions. [2020-10-21 22:13:07,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 22:13:07,264 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-21 22:13:07,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:13:07,276 INFO L225 Difference]: With dead ends: 3265 [2020-10-21 22:13:07,276 INFO L226 Difference]: Without dead ends: 3250 [2020-10-21 22:13:07,276 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 [2020-10-21 22:13:07,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3250 states. [2020-10-21 22:13:07,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3250 to 2281. [2020-10-21 22:13:07,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2281 states. [2020-10-21 22:13:07,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2281 states to 2281 states and 8755 transitions. [2020-10-21 22:13:07,366 INFO L78 Accepts]: Start accepts. Automaton has 2281 states and 8755 transitions. Word has length 17 [2020-10-21 22:13:07,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:13:07,366 INFO L481 AbstractCegarLoop]: Abstraction has 2281 states and 8755 transitions. [2020-10-21 22:13:07,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 22:13:07,367 INFO L276 IsEmpty]: Start isEmpty. Operand 2281 states and 8755 transitions. [2020-10-21 22:13:07,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-21 22:13:07,368 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:13:07,368 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:13:07,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-21 22:13:07,368 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]=== [2020-10-21 22:13:07,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:13:07,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1006706982, now seen corresponding path program 1 times [2020-10-21 22:13:07,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:13:07,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744696278] [2020-10-21 22:13:07,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:13:07,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:13:07,427 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:13:07,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744696278] [2020-10-21 22:13:07,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465930502] [2020-10-21 22:13:07,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:13:07,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:13:07,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-21 22:13:07,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:13:07,564 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:13:07,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:13:07,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-21 22:13:07,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89939794] [2020-10-21 22:13:07,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-21 22:13:07,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:13:07,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-21 22:13:07,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-21 22:13:07,565 INFO L87 Difference]: Start difference. First operand 2281 states and 8755 transitions. Second operand 12 states. [2020-10-21 22:13:07,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:13:07,864 INFO L93 Difference]: Finished difference Result 4825 states and 15986 transitions. [2020-10-21 22:13:07,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 22:13:07,864 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-10-21 22:13:07,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:13:07,879 INFO L225 Difference]: With dead ends: 4825 [2020-10-21 22:13:07,880 INFO L226 Difference]: Without dead ends: 4813 [2020-10-21 22:13:07,880 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-21 22:13:07,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4813 states. [2020-10-21 22:13:08,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4813 to 2305. [2020-10-21 22:13:08,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2305 states. [2020-10-21 22:13:08,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2305 states to 2305 states and 8815 transitions. [2020-10-21 22:13:08,049 INFO L78 Accepts]: Start accepts. Automaton has 2305 states and 8815 transitions. Word has length 19 [2020-10-21 22:13:08,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:13:08,050 INFO L481 AbstractCegarLoop]: Abstraction has 2305 states and 8815 transitions. [2020-10-21 22:13:08,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-21 22:13:08,050 INFO L276 IsEmpty]: Start isEmpty. Operand 2305 states and 8815 transitions. [2020-10-21 22:13:08,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-21 22:13:08,051 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:13:08,051 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:13:08,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:13:08,265 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]=== [2020-10-21 22:13:08,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:13:08,266 INFO L82 PathProgramCache]: Analyzing trace with hash -323556866, now seen corresponding path program 2 times [2020-10-21 22:13:08,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:13:08,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091013691] [2020-10-21 22:13:08,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:13:08,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:13:08,319 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 22:13:08,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091013691] [2020-10-21 22:13:08,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:13:08,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 22:13:08,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540437212] [2020-10-21 22:13:08,321 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 22:13:08,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:13:08,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 22:13:08,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 22:13:08,322 INFO L87 Difference]: Start difference. First operand 2305 states and 8815 transitions. Second operand 7 states. [2020-10-21 22:13:08,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:13:08,636 INFO L93 Difference]: Finished difference Result 4886 states and 16183 transitions. [2020-10-21 22:13:08,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 22:13:08,636 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-21 22:13:08,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:13:08,649 INFO L225 Difference]: With dead ends: 4886 [2020-10-21 22:13:08,649 INFO L226 Difference]: Without dead ends: 4869 [2020-10-21 22:13:08,650 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 [2020-10-21 22:13:08,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4869 states. [2020-10-21 22:13:08,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4869 to 2153. [2020-10-21 22:13:08,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2153 states. [2020-10-21 22:13:08,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2153 states to 2153 states and 8255 transitions. [2020-10-21 22:13:08,754 INFO L78 Accepts]: Start accepts. Automaton has 2153 states and 8255 transitions. Word has length 19 [2020-10-21 22:13:08,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:13:08,754 INFO L481 AbstractCegarLoop]: Abstraction has 2153 states and 8255 transitions. [2020-10-21 22:13:08,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 22:13:08,754 INFO L276 IsEmpty]: Start isEmpty. Operand 2153 states and 8255 transitions. [2020-10-21 22:13:08,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-21 22:13:08,756 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:13:08,756 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:13:08,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-21 22:13:08,757 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]=== [2020-10-21 22:13:08,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:13:08,757 INFO L82 PathProgramCache]: Analyzing trace with hash -323554262, now seen corresponding path program 1 times [2020-10-21 22:13:08,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:13:08,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997973746] [2020-10-21 22:13:08,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:13:08,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:13:08,835 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 22:13:08,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997973746] [2020-10-21 22:13:08,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:13:08,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 22:13:08,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698514307] [2020-10-21 22:13:08,837 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 22:13:08,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:13:08,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 22:13:08,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 22:13:08,837 INFO L87 Difference]: Start difference. First operand 2153 states and 8255 transitions. Second operand 7 states. [2020-10-21 22:13:09,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:13:09,118 INFO L93 Difference]: Finished difference Result 4782 states and 15862 transitions. [2020-10-21 22:13:09,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 22:13:09,119 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-21 22:13:09,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:13:09,128 INFO L225 Difference]: With dead ends: 4782 [2020-10-21 22:13:09,128 INFO L226 Difference]: Without dead ends: 4765 [2020-10-21 22:13:09,129 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-21 22:13:09,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4765 states. [2020-10-21 22:13:09,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4765 to 2212. [2020-10-21 22:13:09,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2212 states. [2020-10-21 22:13:09,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2212 states to 2212 states and 8465 transitions. [2020-10-21 22:13:09,218 INFO L78 Accepts]: Start accepts. Automaton has 2212 states and 8465 transitions. Word has length 19 [2020-10-21 22:13:09,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:13:09,218 INFO L481 AbstractCegarLoop]: Abstraction has 2212 states and 8465 transitions. [2020-10-21 22:13:09,218 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 22:13:09,218 INFO L276 IsEmpty]: Start isEmpty. Operand 2212 states and 8465 transitions. [2020-10-21 22:13:09,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-21 22:13:09,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:13:09,220 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:13:09,220 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-21 22:13:09,220 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]=== [2020-10-21 22:13:09,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:13:09,220 INFO L82 PathProgramCache]: Analyzing trace with hash -307543382, now seen corresponding path program 2 times [2020-10-21 22:13:09,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:13:09,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010533586] [2020-10-21 22:13:09,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:13:09,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:13:09,273 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 22:13:09,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010533586] [2020-10-21 22:13:09,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:13:09,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 22:13:09,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023998510] [2020-10-21 22:13:09,274 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 22:13:09,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:13:09,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 22:13:09,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 22:13:09,275 INFO L87 Difference]: Start difference. First operand 2212 states and 8465 transitions. Second operand 7 states. [2020-10-21 22:13:09,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:13:09,668 INFO L93 Difference]: Finished difference Result 4774 states and 15828 transitions. [2020-10-21 22:13:09,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 22:13:09,669 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-21 22:13:09,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:13:09,676 INFO L225 Difference]: With dead ends: 4774 [2020-10-21 22:13:09,677 INFO L226 Difference]: Without dead ends: 4757 [2020-10-21 22:13:09,677 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-21 22:13:09,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4757 states. [2020-10-21 22:13:09,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4757 to 2150. [2020-10-21 22:13:09,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2150 states. [2020-10-21 22:13:09,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 8243 transitions. [2020-10-21 22:13:09,757 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 8243 transitions. Word has length 19 [2020-10-21 22:13:09,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:13:09,757 INFO L481 AbstractCegarLoop]: Abstraction has 2150 states and 8243 transitions. [2020-10-21 22:13:09,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 22:13:09,757 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 8243 transitions. [2020-10-21 22:13:09,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 22:13:09,759 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:13:09,759 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:13:09,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-21 22:13:09,759 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]=== [2020-10-21 22:13:09,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:13:09,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1077756158, now seen corresponding path program 1 times [2020-10-21 22:13:09,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:13:09,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772228841] [2020-10-21 22:13:09,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:13:09,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:13:09,843 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:13:09,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772228841] [2020-10-21 22:13:09,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472316164] [2020-10-21 22:13:09,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:13:09,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:13:09,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 22:13:09,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:13:10,031 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:13:10,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:13:10,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-21 22:13:10,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297998938] [2020-10-21 22:13:10,033 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-21 22:13:10,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:13:10,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-21 22:13:10,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-21 22:13:10,034 INFO L87 Difference]: Start difference. First operand 2150 states and 8243 transitions. Second operand 16 states. [2020-10-21 22:13:10,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:13:10,921 INFO L93 Difference]: Finished difference Result 6025 states and 18746 transitions. [2020-10-21 22:13:10,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:13:10,922 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-21 22:13:10,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:13:10,932 INFO L225 Difference]: With dead ends: 6025 [2020-10-21 22:13:10,932 INFO L226 Difference]: Without dead ends: 6017 [2020-10-21 22:13:10,933 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-21 22:13:10,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6017 states. [2020-10-21 22:13:10,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6017 to 2121. [2020-10-21 22:13:10,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2121 states. [2020-10-21 22:13:11,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2121 states to 2121 states and 8118 transitions. [2020-10-21 22:13:11,003 INFO L78 Accepts]: Start accepts. Automaton has 2121 states and 8118 transitions. Word has length 21 [2020-10-21 22:13:11,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:13:11,003 INFO L481 AbstractCegarLoop]: Abstraction has 2121 states and 8118 transitions. [2020-10-21 22:13:11,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-21 22:13:11,003 INFO L276 IsEmpty]: Start isEmpty. Operand 2121 states and 8118 transitions. [2020-10-21 22:13:11,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 22:13:11,005 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:13:11,005 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:13:11,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-10-21 22:13:11,218 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]=== [2020-10-21 22:13:11,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:13:11,218 INFO L82 PathProgramCache]: Analyzing trace with hash 1093767038, now seen corresponding path program 2 times [2020-10-21 22:13:11,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:13:11,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717189086] [2020-10-21 22:13:11,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:13:11,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:13:11,295 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:13:11,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717189086] [2020-10-21 22:13:11,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308006430] [2020-10-21 22:13:11,296 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-21 22:13:11,475 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 22:13:11,475 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 22:13:11,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 22:13:11,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:13:11,611 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:13:11,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:13:11,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-21 22:13:11,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277131928] [2020-10-21 22:13:11,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-21 22:13:11,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:13:11,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-21 22:13:11,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-21 22:13:11,613 INFO L87 Difference]: Start difference. First operand 2121 states and 8118 transitions. Second operand 16 states. [2020-10-21 22:13:12,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:13:12,499 INFO L93 Difference]: Finished difference Result 5922 states and 18404 transitions. [2020-10-21 22:13:12,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:13:12,500 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-21 22:13:12,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:13:12,510 INFO L225 Difference]: With dead ends: 5922 [2020-10-21 22:13:12,510 INFO L226 Difference]: Without dead ends: 5911 [2020-10-21 22:13:12,511 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-21 22:13:12,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5911 states. [2020-10-21 22:13:12,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5911 to 2085. [2020-10-21 22:13:12,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2085 states. [2020-10-21 22:13:12,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2085 states to 2085 states and 7975 transitions. [2020-10-21 22:13:12,600 INFO L78 Accepts]: Start accepts. Automaton has 2085 states and 7975 transitions. Word has length 21 [2020-10-21 22:13:12,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:13:12,601 INFO L481 AbstractCegarLoop]: Abstraction has 2085 states and 7975 transitions. [2020-10-21 22:13:12,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-21 22:13:12,601 INFO L276 IsEmpty]: Start isEmpty. Operand 2085 states and 7975 transitions. [2020-10-21 22:13:12,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 22:13:12,603 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:13:12,603 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:13:12,817 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:13:12,817 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]=== [2020-10-21 22:13:12,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:13:12,818 INFO L82 PathProgramCache]: Analyzing trace with hash -1169886916, now seen corresponding path program 1 times [2020-10-21 22:13:12,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:13:12,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607899820] [2020-10-21 22:13:12,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:13:12,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:13:12,855 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-21 22:13:12,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607899820] [2020-10-21 22:13:12,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:13:12,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 22:13:12,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583901272] [2020-10-21 22:13:12,857 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 22:13:12,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:13:12,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 22:13:12,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 22:13:12,857 INFO L87 Difference]: Start difference. First operand 2085 states and 7975 transitions. Second operand 5 states. [2020-10-21 22:13:12,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:13:12,960 INFO L93 Difference]: Finished difference Result 3167 states and 11408 transitions. [2020-10-21 22:13:12,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 22:13:12,961 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-21 22:13:12,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:13:12,967 INFO L225 Difference]: With dead ends: 3167 [2020-10-21 22:13:12,967 INFO L226 Difference]: Without dead ends: 3151 [2020-10-21 22:13:12,968 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 [2020-10-21 22:13:12,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3151 states. [2020-10-21 22:13:13,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3151 to 2322. [2020-10-21 22:13:13,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2322 states. [2020-10-21 22:13:13,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2322 states to 2322 states and 8744 transitions. [2020-10-21 22:13:13,039 INFO L78 Accepts]: Start accepts. Automaton has 2322 states and 8744 transitions. Word has length 21 [2020-10-21 22:13:13,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:13:13,039 INFO L481 AbstractCegarLoop]: Abstraction has 2322 states and 8744 transitions. [2020-10-21 22:13:13,039 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 22:13:13,040 INFO L276 IsEmpty]: Start isEmpty. Operand 2322 states and 8744 transitions. [2020-10-21 22:13:13,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 22:13:13,041 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:13:13,042 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:13:13,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-21 22:13:13,042 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]=== [2020-10-21 22:13:13,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:13:13,042 INFO L82 PathProgramCache]: Analyzing trace with hash -1700514858, now seen corresponding path program 3 times [2020-10-21 22:13:13,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:13:13,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076653279] [2020-10-21 22:13:13,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:13:13,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:13:13,124 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 22:13:13,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076653279] [2020-10-21 22:13:13,125 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:13:13,125 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 22:13:13,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185515145] [2020-10-21 22:13:13,126 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 22:13:13,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:13:13,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 22:13:13,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 22:13:13,127 INFO L87 Difference]: Start difference. First operand 2322 states and 8744 transitions. Second operand 9 states. [2020-10-21 22:13:13,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:13:13,965 INFO L93 Difference]: Finished difference Result 6235 states and 19513 transitions. [2020-10-21 22:13:13,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:13:13,965 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-21 22:13:13,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:13:13,975 INFO L225 Difference]: With dead ends: 6235 [2020-10-21 22:13:13,976 INFO L226 Difference]: Without dead ends: 6224 [2020-10-21 22:13:13,976 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-21 22:13:13,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6224 states. [2020-10-21 22:13:14,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6224 to 2235. [2020-10-21 22:13:14,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2235 states. [2020-10-21 22:13:14,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2235 states to 2235 states and 8410 transitions. [2020-10-21 22:13:14,049 INFO L78 Accepts]: Start accepts. Automaton has 2235 states and 8410 transitions. Word has length 21 [2020-10-21 22:13:14,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:13:14,049 INFO L481 AbstractCegarLoop]: Abstraction has 2235 states and 8410 transitions. [2020-10-21 22:13:14,049 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 22:13:14,049 INFO L276 IsEmpty]: Start isEmpty. Operand 2235 states and 8410 transitions. [2020-10-21 22:13:14,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 22:13:14,051 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:13:14,051 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:13:14,051 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-21 22:13:14,051 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]=== [2020-10-21 22:13:14,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:13:14,051 INFO L82 PathProgramCache]: Analyzing trace with hash -1698015018, now seen corresponding path program 4 times [2020-10-21 22:13:14,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:13:14,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216377072] [2020-10-21 22:13:14,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:13:14,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:13:14,123 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 22:13:14,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216377072] [2020-10-21 22:13:14,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:13:14,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 22:13:14,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233330697] [2020-10-21 22:13:14,124 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 22:13:14,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:13:14,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 22:13:14,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 22:13:14,125 INFO L87 Difference]: Start difference. First operand 2235 states and 8410 transitions. Second operand 9 states. [2020-10-21 22:13:14,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:13:14,855 INFO L93 Difference]: Finished difference Result 6169 states and 19292 transitions. [2020-10-21 22:13:14,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:13:14,855 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-21 22:13:14,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:13:14,867 INFO L225 Difference]: With dead ends: 6169 [2020-10-21 22:13:14,867 INFO L226 Difference]: Without dead ends: 6155 [2020-10-21 22:13:14,868 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-21 22:13:14,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6155 states. [2020-10-21 22:13:14,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6155 to 2191. [2020-10-21 22:13:14,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2191 states. [2020-10-21 22:13:14,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2191 states to 2191 states and 8230 transitions. [2020-10-21 22:13:14,935 INFO L78 Accepts]: Start accepts. Automaton has 2191 states and 8230 transitions. Word has length 21 [2020-10-21 22:13:14,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:13:14,935 INFO L481 AbstractCegarLoop]: Abstraction has 2191 states and 8230 transitions. [2020-10-21 22:13:14,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 22:13:14,935 INFO L276 IsEmpty]: Start isEmpty. Operand 2191 states and 8230 transitions. [2020-10-21 22:13:14,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 22:13:14,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:13:14,936 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:13:14,936 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-21 22:13:14,936 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]=== [2020-10-21 22:13:14,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:13:14,937 INFO L82 PathProgramCache]: Analyzing trace with hash 817049814, now seen corresponding path program 5 times [2020-10-21 22:13:14,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:13:14,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552015837] [2020-10-21 22:13:14,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:13:14,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:13:15,001 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 22:13:15,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552015837] [2020-10-21 22:13:15,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:13:15,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 22:13:15,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740717432] [2020-10-21 22:13:15,002 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 22:13:15,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:13:15,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 22:13:15,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 22:13:15,003 INFO L87 Difference]: Start difference. First operand 2191 states and 8230 transitions. Second operand 9 states. [2020-10-21 22:13:15,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:13:15,812 INFO L93 Difference]: Finished difference Result 6158 states and 19267 transitions. [2020-10-21 22:13:15,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:13:15,813 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-21 22:13:15,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:13:15,822 INFO L225 Difference]: With dead ends: 6158 [2020-10-21 22:13:15,823 INFO L226 Difference]: Without dead ends: 6147 [2020-10-21 22:13:15,823 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-21 22:13:15,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6147 states. [2020-10-21 22:13:15,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6147 to 2096. [2020-10-21 22:13:15,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2096 states. [2020-10-21 22:13:15,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2096 states to 2096 states and 7876 transitions. [2020-10-21 22:13:15,908 INFO L78 Accepts]: Start accepts. Automaton has 2096 states and 7876 transitions. Word has length 21 [2020-10-21 22:13:15,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:13:15,908 INFO L481 AbstractCegarLoop]: Abstraction has 2096 states and 7876 transitions. [2020-10-21 22:13:15,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 22:13:15,908 INFO L276 IsEmpty]: Start isEmpty. Operand 2096 states and 7876 transitions. [2020-10-21 22:13:15,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 22:13:15,910 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:13:15,910 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:13:15,910 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-21 22:13:15,910 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]=== [2020-10-21 22:13:15,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:13:15,910 INFO L82 PathProgramCache]: Analyzing trace with hash 803538774, now seen corresponding path program 6 times [2020-10-21 22:13:15,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:13:15,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219901522] [2020-10-21 22:13:15,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:13:15,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:13:15,982 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 22:13:15,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219901522] [2020-10-21 22:13:15,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:13:15,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 22:13:15,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300262471] [2020-10-21 22:13:15,983 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 22:13:15,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:13:15,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 22:13:15,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 22:13:15,984 INFO L87 Difference]: Start difference. First operand 2096 states and 7876 transitions. Second operand 9 states. [2020-10-21 22:13:16,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:13:16,730 INFO L93 Difference]: Finished difference Result 6017 states and 18791 transitions. [2020-10-21 22:13:16,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:13:16,731 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-21 22:13:16,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:13:16,744 INFO L225 Difference]: With dead ends: 6017 [2020-10-21 22:13:16,745 INFO L226 Difference]: Without dead ends: 6002 [2020-10-21 22:13:16,745 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-21 22:13:16,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6002 states. [2020-10-21 22:13:16,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6002 to 1965. [2020-10-21 22:13:16,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1965 states. [2020-10-21 22:13:16,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1965 states to 1965 states and 7429 transitions. [2020-10-21 22:13:16,822 INFO L78 Accepts]: Start accepts. Automaton has 1965 states and 7429 transitions. Word has length 21 [2020-10-21 22:13:16,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:13:16,823 INFO L481 AbstractCegarLoop]: Abstraction has 1965 states and 7429 transitions. [2020-10-21 22:13:16,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 22:13:16,823 INFO L276 IsEmpty]: Start isEmpty. Operand 1965 states and 7429 transitions. [2020-10-21 22:13:16,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-21 22:13:16,824 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:13:16,824 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:13:16,824 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-21 22:13:16,824 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]=== [2020-10-21 22:13:16,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:13:16,825 INFO L82 PathProgramCache]: Analyzing trace with hash -1912181542, now seen corresponding path program 1 times [2020-10-21 22:13:16,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:13:16,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127142642] [2020-10-21 22:13:16,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:13:16,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-21 22:13:16,835 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-21 22:13:16,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-21 22:13:16,844 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-21 22:13:16,855 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-21 22:13:16,855 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-21 22:13:16,855 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-21 22:13:16,855 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-21 22:13:16,856 WARN L371 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-21 22:13:16,856 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-10-21 22:13:16,869 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,869 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,869 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,870 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,870 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,870 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,870 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,870 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,870 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,870 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,871 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,871 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,871 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,871 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,871 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,871 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,871 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,871 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,872 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,872 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,872 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,872 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,872 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,872 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,872 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,873 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,873 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,873 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,873 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,873 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,873 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,873 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,873 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,874 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,874 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,874 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,874 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,874 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,874 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,875 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,875 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,875 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,875 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,875 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,875 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,875 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,876 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,876 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,876 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,876 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,876 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,876 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,876 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,877 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,877 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,877 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,877 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,877 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,877 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,878 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,878 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,878 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,878 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,878 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,879 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,879 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,879 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,879 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,879 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,879 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,879 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,880 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,880 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,880 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,880 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,880 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,880 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,881 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,881 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,881 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,881 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,881 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,881 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,881 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,882 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,882 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,882 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,882 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,882 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,882 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,882 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,883 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,883 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,883 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,883 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,883 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,883 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,883 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,883 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,884 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,884 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,884 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,884 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,884 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,884 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,885 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,885 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,885 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,885 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,885 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,891 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,891 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,891 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,892 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,892 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,893 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,893 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,893 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,893 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,893 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,895 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,895 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,895 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,895 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,895 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,896 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,897 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,897 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,897 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,897 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,898 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,898 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,898 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,899 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,899 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,899 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,899 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,899 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,900 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,900 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,901 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,901 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,901 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,901 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,901 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,901 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,902 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,903 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,903 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,903 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,903 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,903 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,903 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,903 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,905 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,905 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,905 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,905 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,905 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,905 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,906 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,906 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,907 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,907 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,907 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,907 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,907 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,908 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,908 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,908 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:13:16,909 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-21 22:13:16,909 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-10-21 22:13:16,910 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-21 22:13:16,910 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-21 22:13:16,910 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-21 22:13:16,910 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-21 22:13:16,910 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-21 22:13:16,910 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-21 22:13:16,910 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-21 22:13:16,910 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-21 22:13:16,912 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-21 22:13:16,912 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 161 places, 151 transitions, 392 flow [2020-10-21 22:13:16,912 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 161 places, 151 transitions, 392 flow [2020-10-21 22:13:16,912 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 161 places, 151 transitions, 392 flow [2020-10-21 22:13:16,931 INFO L129 PetriNetUnfolder]: 9/161 cut-off events. [2020-10-21 22:13:16,931 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-10-21 22:13:16,933 INFO L80 FinitePrefix]: Finished finitePrefix Result has 199 conditions, 161 events. 9/161 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 266 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 188. Up to 12 conditions per place. [2020-10-21 22:13:16,938 INFO L116 LiptonReduction]: Number of co-enabled transitions 2744 [2020-10-21 22:13:18,894 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-21 22:13:19,471 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 78 [2020-10-21 22:13:19,644 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2020-10-21 22:13:19,976 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 94 [2020-10-21 22:13:20,111 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-21 22:13:20,116 INFO L131 LiptonReduction]: Checked pairs total: 4200 [2020-10-21 22:13:20,116 INFO L133 LiptonReduction]: Total number of compositions: 162 [2020-10-21 22:13:20,116 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 61 places, 39 transitions, 168 flow [2020-10-21 22:13:20,536 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 6191 states. [2020-10-21 22:13:20,536 INFO L276 IsEmpty]: Start isEmpty. Operand 6191 states. [2020-10-21 22:13:20,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-21 22:13:20,536 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:13:20,537 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-21 22:13:20,537 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]=== [2020-10-21 22:13:20,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:13:20,537 INFO L82 PathProgramCache]: Analyzing trace with hash 1311531, now seen corresponding path program 1 times [2020-10-21 22:13:20,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:13:20,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645843548] [2020-10-21 22:13:20,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:13:20,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:13:20,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:13:20,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645843548] [2020-10-21 22:13:20,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:13:20,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-21 22:13:20,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451177919] [2020-10-21 22:13:20,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 22:13:20,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:13:20,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 22:13:20,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 22:13:20,561 INFO L87 Difference]: Start difference. First operand 6191 states. Second operand 3 states. [2020-10-21 22:13:20,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:13:20,635 INFO L93 Difference]: Finished difference Result 5844 states and 26316 transitions. [2020-10-21 22:13:20,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 22:13:20,636 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-21 22:13:20,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:13:20,655 INFO L225 Difference]: With dead ends: 5844 [2020-10-21 22:13:20,656 INFO L226 Difference]: Without dead ends: 5479 [2020-10-21 22:13:20,657 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 [2020-10-21 22:13:20,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5479 states. [2020-10-21 22:13:20,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5479 to 5479. [2020-10-21 22:13:20,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5479 states. [2020-10-21 22:13:20,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5479 states to 5479 states and 24493 transitions. [2020-10-21 22:13:20,832 INFO L78 Accepts]: Start accepts. Automaton has 5479 states and 24493 transitions. Word has length 3 [2020-10-21 22:13:20,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:13:20,833 INFO L481 AbstractCegarLoop]: Abstraction has 5479 states and 24493 transitions. [2020-10-21 22:13:20,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 22:13:20,833 INFO L276 IsEmpty]: Start isEmpty. Operand 5479 states and 24493 transitions. [2020-10-21 22:13:20,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-21 22:13:20,833 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:13:20,833 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:13:20,833 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-21 22:13:20,833 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]=== [2020-10-21 22:13:20,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:13:20,834 INFO L82 PathProgramCache]: Analyzing trace with hash -1486087653, now seen corresponding path program 1 times [2020-10-21 22:13:20,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:13:20,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166155744] [2020-10-21 22:13:20,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:13:20,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:13:20,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:13:20,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166155744] [2020-10-21 22:13:20,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:13:20,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 22:13:20,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783080578] [2020-10-21 22:13:20,862 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 22:13:20,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:13:20,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 22:13:20,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 22:13:20,863 INFO L87 Difference]: Start difference. First operand 5479 states and 24493 transitions. Second operand 5 states. [2020-10-21 22:13:21,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:13:21,000 INFO L93 Difference]: Finished difference Result 9673 states and 40333 transitions. [2020-10-21 22:13:21,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 22:13:21,001 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-21 22:13:21,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:13:21,026 INFO L225 Difference]: With dead ends: 9673 [2020-10-21 22:13:21,026 INFO L226 Difference]: Without dead ends: 9666 [2020-10-21 22:13:21,027 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 [2020-10-21 22:13:21,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9666 states. [2020-10-21 22:13:21,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9666 to 6331. [2020-10-21 22:13:21,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6331 states. [2020-10-21 22:13:21,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6331 states to 6331 states and 28544 transitions. [2020-10-21 22:13:21,245 INFO L78 Accepts]: Start accepts. Automaton has 6331 states and 28544 transitions. Word has length 9 [2020-10-21 22:13:21,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:13:21,245 INFO L481 AbstractCegarLoop]: Abstraction has 6331 states and 28544 transitions. [2020-10-21 22:13:21,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 22:13:21,245 INFO L276 IsEmpty]: Start isEmpty. Operand 6331 states and 28544 transitions. [2020-10-21 22:13:21,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 22:13:21,245 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:13:21,245 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:13:21,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-21 22:13:21,246 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]=== [2020-10-21 22:13:21,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:13:21,246 INFO L82 PathProgramCache]: Analyzing trace with hash -2078441721, now seen corresponding path program 1 times [2020-10-21 22:13:21,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:13:21,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826002215] [2020-10-21 22:13:21,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:13:21,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:13:21,275 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 22:13:21,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826002215] [2020-10-21 22:13:21,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:13:21,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 22:13:21,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80601384] [2020-10-21 22:13:21,276 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 22:13:21,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:13:21,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 22:13:21,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 22:13:21,277 INFO L87 Difference]: Start difference. First operand 6331 states and 28544 transitions. Second operand 5 states. [2020-10-21 22:13:21,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:13:21,445 INFO L93 Difference]: Finished difference Result 11081 states and 46826 transitions. [2020-10-21 22:13:21,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 22:13:21,445 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-21 22:13:21,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:13:21,474 INFO L225 Difference]: With dead ends: 11081 [2020-10-21 22:13:21,474 INFO L226 Difference]: Without dead ends: 11068 [2020-10-21 22:13:21,474 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 [2020-10-21 22:13:22,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11068 states. [2020-10-21 22:13:22,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11068 to 7391. [2020-10-21 22:13:22,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7391 states. [2020-10-21 22:13:22,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7391 states to 7391 states and 33694 transitions. [2020-10-21 22:13:22,384 INFO L78 Accepts]: Start accepts. Automaton has 7391 states and 33694 transitions. Word has length 13 [2020-10-21 22:13:22,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:13:22,384 INFO L481 AbstractCegarLoop]: Abstraction has 7391 states and 33694 transitions. [2020-10-21 22:13:22,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 22:13:22,384 INFO L276 IsEmpty]: Start isEmpty. Operand 7391 states and 33694 transitions. [2020-10-21 22:13:22,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-21 22:13:22,385 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:13:22,385 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:13:22,385 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-21 22:13:22,385 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]=== [2020-10-21 22:13:22,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:13:22,386 INFO L82 PathProgramCache]: Analyzing trace with hash -80896491, now seen corresponding path program 1 times [2020-10-21 22:13:22,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:13:22,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126281004] [2020-10-21 22:13:22,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:13:22,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:13:22,422 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:13:22,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126281004] [2020-10-21 22:13:22,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928709598] [2020-10-21 22:13:22,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:13:22,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:13:22,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-21 22:13:22,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:13:22,587 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:13:22,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:13:22,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-21 22:13:22,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775970839] [2020-10-21 22:13:22,588 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-21 22:13:22,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:13:22,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-21 22:13:22,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-21 22:13:22,589 INFO L87 Difference]: Start difference. First operand 7391 states and 33694 transitions. Second operand 12 states. [2020-10-21 22:13:23,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:13:23,043 INFO L93 Difference]: Finished difference Result 16749 states and 66010 transitions. [2020-10-21 22:13:23,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 22:13:23,044 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-21 22:13:23,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:13:23,103 INFO L225 Difference]: With dead ends: 16749 [2020-10-21 22:13:23,103 INFO L226 Difference]: Without dead ends: 16736 [2020-10-21 22:13:23,103 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-10-21 22:13:23,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16736 states. [2020-10-21 22:13:23,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16736 to 7303. [2020-10-21 22:13:23,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7303 states. [2020-10-21 22:13:23,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7303 states to 7303 states and 33260 transitions. [2020-10-21 22:13:23,419 INFO L78 Accepts]: Start accepts. Automaton has 7303 states and 33260 transitions. Word has length 15 [2020-10-21 22:13:23,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:13:23,419 INFO L481 AbstractCegarLoop]: Abstraction has 7303 states and 33260 transitions. [2020-10-21 22:13:23,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-21 22:13:23,419 INFO L276 IsEmpty]: Start isEmpty. Operand 7303 states and 33260 transitions. [2020-10-21 22:13:23,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-21 22:13:23,420 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:13:23,420 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:13:23,628 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-10-21 22:13:23,629 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]=== [2020-10-21 22:13:23,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:13:23,630 INFO L82 PathProgramCache]: Analyzing trace with hash -222679403, now seen corresponding path program 2 times [2020-10-21 22:13:23,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:13:23,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385661209] [2020-10-21 22:13:23,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:13:23,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:13:23,671 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 22:13:23,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385661209] [2020-10-21 22:13:23,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:13:23,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 22:13:23,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264767170] [2020-10-21 22:13:23,672 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 22:13:23,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:13:23,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 22:13:23,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 22:13:23,673 INFO L87 Difference]: Start difference. First operand 7303 states and 33260 transitions. Second operand 7 states. [2020-10-21 22:13:24,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:13:24,323 INFO L93 Difference]: Finished difference Result 17085 states and 67393 transitions. [2020-10-21 22:13:24,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 22:13:24,323 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-21 22:13:24,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:13:24,381 INFO L225 Difference]: With dead ends: 17085 [2020-10-21 22:13:24,382 INFO L226 Difference]: Without dead ends: 17071 [2020-10-21 22:13:24,382 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 [2020-10-21 22:13:24,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17071 states. [2020-10-21 22:13:24,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17071 to 7048. [2020-10-21 22:13:24,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7048 states. [2020-10-21 22:13:24,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7048 states to 7048 states and 32136 transitions. [2020-10-21 22:13:24,799 INFO L78 Accepts]: Start accepts. Automaton has 7048 states and 32136 transitions. Word has length 15 [2020-10-21 22:13:24,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:13:24,799 INFO L481 AbstractCegarLoop]: Abstraction has 7048 states and 32136 transitions. [2020-10-21 22:13:24,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 22:13:24,799 INFO L276 IsEmpty]: Start isEmpty. Operand 7048 states and 32136 transitions. [2020-10-21 22:13:24,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-21 22:13:24,800 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:13:24,800 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:13:24,800 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-21 22:13:24,801 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]=== [2020-10-21 22:13:24,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:13:24,801 INFO L82 PathProgramCache]: Analyzing trace with hash -681474966, now seen corresponding path program 1 times [2020-10-21 22:13:24,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:13:24,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868461210] [2020-10-21 22:13:24,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:13:24,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:13:24,834 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 22:13:24,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868461210] [2020-10-21 22:13:24,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:13:24,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 22:13:24,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074029092] [2020-10-21 22:13:24,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 22:13:24,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:13:24,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 22:13:24,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 22:13:24,836 INFO L87 Difference]: Start difference. First operand 7048 states and 32136 transitions. Second operand 5 states. [2020-10-21 22:13:25,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:13:25,045 INFO L93 Difference]: Finished difference Result 12234 states and 52488 transitions. [2020-10-21 22:13:25,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 22:13:25,046 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-21 22:13:25,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:13:25,100 INFO L225 Difference]: With dead ends: 12234 [2020-10-21 22:13:25,101 INFO L226 Difference]: Without dead ends: 12212 [2020-10-21 22:13:25,101 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 [2020-10-21 22:13:25,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12212 states. [2020-10-21 22:13:25,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12212 to 8342. [2020-10-21 22:13:25,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8342 states. [2020-10-21 22:13:25,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8342 states to 8342 states and 38278 transitions. [2020-10-21 22:13:25,577 INFO L78 Accepts]: Start accepts. Automaton has 8342 states and 38278 transitions. Word has length 17 [2020-10-21 22:13:25,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:13:25,578 INFO L481 AbstractCegarLoop]: Abstraction has 8342 states and 38278 transitions. [2020-10-21 22:13:25,578 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 22:13:25,578 INFO L276 IsEmpty]: Start isEmpty. Operand 8342 states and 38278 transitions. [2020-10-21 22:13:25,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-21 22:13:25,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:13:25,580 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:13:25,580 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-21 22:13:25,580 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]=== [2020-10-21 22:13:25,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:13:25,580 INFO L82 PathProgramCache]: Analyzing trace with hash -66098056, now seen corresponding path program 1 times [2020-10-21 22:13:25,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:13:25,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089158296] [2020-10-21 22:13:25,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:13:25,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:13:25,623 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 22:13:25,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089158296] [2020-10-21 22:13:25,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039529072] [2020-10-21 22:13:25,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-21 22:13:25,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:13:25,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-21 22:13:25,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:13:25,777 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 22:13:25,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:13:25,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-21 22:13:25,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877375012] [2020-10-21 22:13:25,778 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-21 22:13:25,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:13:25,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-21 22:13:25,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-21 22:13:25,779 INFO L87 Difference]: Start difference. First operand 8342 states and 38278 transitions. Second operand 12 states. [2020-10-21 22:13:26,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:13:26,299 INFO L93 Difference]: Finished difference Result 19016 states and 76191 transitions. [2020-10-21 22:13:26,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 22:13:26,300 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-10-21 22:13:26,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:13:26,343 INFO L225 Difference]: With dead ends: 19016 [2020-10-21 22:13:26,343 INFO L226 Difference]: Without dead ends: 18998 [2020-10-21 22:13:26,344 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-10-21 22:13:26,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18998 states. [2020-10-21 22:13:26,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18998 to 8452. [2020-10-21 22:13:26,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8452 states. [2020-10-21 22:13:26,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8452 states to 8452 states and 38704 transitions. [2020-10-21 22:13:26,665 INFO L78 Accepts]: Start accepts. Automaton has 8452 states and 38704 transitions. Word has length 19 [2020-10-21 22:13:26,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:13:26,666 INFO L481 AbstractCegarLoop]: Abstraction has 8452 states and 38704 transitions. [2020-10-21 22:13:26,666 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-21 22:13:26,666 INFO L276 IsEmpty]: Start isEmpty. Operand 8452 states and 38704 transitions. [2020-10-21 22:13:26,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-21 22:13:26,667 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:13:26,667 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:13:26,867 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-10-21 22:13:26,868 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]=== [2020-10-21 22:13:26,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:13:26,868 INFO L82 PathProgramCache]: Analyzing trace with hash -2062391496, now seen corresponding path program 2 times [2020-10-21 22:13:26,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:13:26,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105053946] [2020-10-21 22:13:26,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:13:26,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:13:26,909 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 22:13:26,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105053946] [2020-10-21 22:13:26,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:13:26,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 22:13:26,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078293750] [2020-10-21 22:13:26,910 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 22:13:26,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:13:26,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 22:13:26,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 22:13:26,911 INFO L87 Difference]: Start difference. First operand 8452 states and 38704 transitions. Second operand 7 states. [2020-10-21 22:13:27,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:13:27,286 INFO L93 Difference]: Finished difference Result 19420 states and 77854 transitions. [2020-10-21 22:13:27,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 22:13:27,286 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-21 22:13:27,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:13:27,332 INFO L225 Difference]: With dead ends: 19420 [2020-10-21 22:13:27,333 INFO L226 Difference]: Without dead ends: 19395 [2020-10-21 22:13:27,333 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 [2020-10-21 22:13:27,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19395 states. [2020-10-21 22:13:27,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19395 to 8129. [2020-10-21 22:13:27,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8129 states. [2020-10-21 22:13:27,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8129 states to 8129 states and 37298 transitions. [2020-10-21 22:13:27,659 INFO L78 Accepts]: Start accepts. Automaton has 8129 states and 37298 transitions. Word has length 19 [2020-10-21 22:13:27,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:13:27,659 INFO L481 AbstractCegarLoop]: Abstraction has 8129 states and 37298 transitions. [2020-10-21 22:13:27,659 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 22:13:27,659 INFO L276 IsEmpty]: Start isEmpty. Operand 8129 states and 37298 transitions. [2020-10-21 22:13:27,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-21 22:13:27,660 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:13:27,660 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:13:27,660 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-21 22:13:27,661 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]=== [2020-10-21 22:13:27,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:13:27,661 INFO L82 PathProgramCache]: Analyzing trace with hash -2062399215, now seen corresponding path program 1 times [2020-10-21 22:13:27,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:13:27,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761341005] [2020-10-21 22:13:27,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:13:27,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:13:27,868 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 22:13:27,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761341005] [2020-10-21 22:13:27,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:13:27,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 22:13:27,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461057366] [2020-10-21 22:13:27,870 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 22:13:27,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:13:27,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 22:13:27,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 22:13:27,870 INFO L87 Difference]: Start difference. First operand 8129 states and 37298 transitions. Second operand 7 states. [2020-10-21 22:13:28,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:13:28,333 INFO L93 Difference]: Finished difference Result 19373 states and 77785 transitions. [2020-10-21 22:13:28,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 22:13:28,334 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-21 22:13:28,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:13:28,403 INFO L225 Difference]: With dead ends: 19373 [2020-10-21 22:13:28,405 INFO L226 Difference]: Without dead ends: 19348 [2020-10-21 22:13:28,406 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 [2020-10-21 22:13:28,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19348 states. [2020-10-21 22:13:28,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19348 to 8375. [2020-10-21 22:13:28,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8375 states. [2020-10-21 22:13:28,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8375 states to 8375 states and 38394 transitions. [2020-10-21 22:13:28,786 INFO L78 Accepts]: Start accepts. Automaton has 8375 states and 38394 transitions. Word has length 19 [2020-10-21 22:13:28,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:13:28,786 INFO L481 AbstractCegarLoop]: Abstraction has 8375 states and 38394 transitions. [2020-10-21 22:13:28,786 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 22:13:28,787 INFO L276 IsEmpty]: Start isEmpty. Operand 8375 states and 38394 transitions. [2020-10-21 22:13:28,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-21 22:13:28,788 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:13:28,788 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:13:28,788 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-21 22:13:28,788 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]=== [2020-10-21 22:13:28,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:13:28,789 INFO L82 PathProgramCache]: Analyzing trace with hash -2050465455, now seen corresponding path program 2 times [2020-10-21 22:13:28,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:13:28,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274478448] [2020-10-21 22:13:28,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:13:28,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:13:28,831 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 22:13:28,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274478448] [2020-10-21 22:13:28,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:13:28,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 22:13:28,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036141180] [2020-10-21 22:13:28,832 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 22:13:28,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:13:28,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 22:13:28,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 22:13:28,833 INFO L87 Difference]: Start difference. First operand 8375 states and 38394 transitions. Second operand 7 states. [2020-10-21 22:13:29,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:13:29,207 INFO L93 Difference]: Finished difference Result 19555 states and 78564 transitions. [2020-10-21 22:13:29,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 22:13:29,208 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-21 22:13:29,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:13:29,252 INFO L225 Difference]: With dead ends: 19555 [2020-10-21 22:13:29,252 INFO L226 Difference]: Without dead ends: 19530 [2020-10-21 22:13:29,252 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 [2020-10-21 22:13:29,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19530 states. [2020-10-21 22:13:29,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19530 to 8317. [2020-10-21 22:13:29,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8317 states. [2020-10-21 22:13:29,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8317 states to 8317 states and 38184 transitions. [2020-10-21 22:13:29,582 INFO L78 Accepts]: Start accepts. Automaton has 8317 states and 38184 transitions. Word has length 19 [2020-10-21 22:13:29,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:13:29,582 INFO L481 AbstractCegarLoop]: Abstraction has 8317 states and 38184 transitions. [2020-10-21 22:13:29,582 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 22:13:29,582 INFO L276 IsEmpty]: Start isEmpty. Operand 8317 states and 38184 transitions. [2020-10-21 22:13:29,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 22:13:29,583 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:13:29,583 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:13:29,583 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-21 22:13:29,583 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]=== [2020-10-21 22:13:29,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:13:29,584 INFO L82 PathProgramCache]: Analyzing trace with hash 904291743, now seen corresponding path program 1 times [2020-10-21 22:13:29,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:13:29,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722628190] [2020-10-21 22:13:29,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:13:29,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:13:29,827 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 22:13:29,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722628190] [2020-10-21 22:13:29,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628042877] [2020-10-21 22:13:29,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:13:29,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:13:29,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 22:13:29,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:13:30,034 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 22:13:30,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:13:30,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-21 22:13:30,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388977640] [2020-10-21 22:13:30,035 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-21 22:13:30,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:13:30,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-21 22:13:30,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-10-21 22:13:30,036 INFO L87 Difference]: Start difference. First operand 8317 states and 38184 transitions. Second operand 16 states. [2020-10-21 22:13:30,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:13:30,989 INFO L93 Difference]: Finished difference Result 26969 states and 101544 transitions. [2020-10-21 22:13:30,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:13:30,990 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-21 22:13:30,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:13:31,053 INFO L225 Difference]: With dead ends: 26969 [2020-10-21 22:13:31,053 INFO L226 Difference]: Without dead ends: 26957 [2020-10-21 22:13:31,054 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=394, Invalid=1088, Unknown=0, NotChecked=0, Total=1482 [2020-10-21 22:13:31,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26957 states. [2020-10-21 22:13:31,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26957 to 8208. [2020-10-21 22:13:31,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8208 states. [2020-10-21 22:13:31,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8208 states to 8208 states and 37640 transitions. [2020-10-21 22:13:31,433 INFO L78 Accepts]: Start accepts. Automaton has 8208 states and 37640 transitions. Word has length 21 [2020-10-21 22:13:31,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:13:31,433 INFO L481 AbstractCegarLoop]: Abstraction has 8208 states and 37640 transitions. [2020-10-21 22:13:31,433 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-21 22:13:31,433 INFO L276 IsEmpty]: Start isEmpty. Operand 8208 states and 37640 transitions. [2020-10-21 22:13:31,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 22:13:31,434 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:13:31,434 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:13:31,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:13:31,636 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]=== [2020-10-21 22:13:31,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:13:31,636 INFO L82 PathProgramCache]: Analyzing trace with hash 916225503, now seen corresponding path program 2 times [2020-10-21 22:13:31,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:13:31,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197531114] [2020-10-21 22:13:31,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:13:31,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:13:31,693 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 22:13:31,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197531114] [2020-10-21 22:13:31,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128325532] [2020-10-21 22:13:31,694 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-21 22:13:31,774 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 22:13:31,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 22:13:31,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 22:13:31,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:13:31,884 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 22:13:31,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:13:31,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-21 22:13:31,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140687865] [2020-10-21 22:13:31,885 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-21 22:13:31,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:13:31,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-21 22:13:31,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-10-21 22:13:31,886 INFO L87 Difference]: Start difference. First operand 8208 states and 37640 transitions. Second operand 16 states. [2020-10-21 22:13:33,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:13:33,068 INFO L93 Difference]: Finished difference Result 26669 states and 100297 transitions. [2020-10-21 22:13:33,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:13:33,068 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-21 22:13:33,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:13:33,129 INFO L225 Difference]: With dead ends: 26669 [2020-10-21 22:13:33,129 INFO L226 Difference]: Without dead ends: 26653 [2020-10-21 22:13:33,130 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=394, Invalid=1088, Unknown=0, NotChecked=0, Total=1482 [2020-10-21 22:13:33,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26653 states. [2020-10-21 22:13:33,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26653 to 8091. [2020-10-21 22:13:33,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8091 states. [2020-10-21 22:13:33,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8091 states to 8091 states and 37076 transitions. [2020-10-21 22:13:33,520 INFO L78 Accepts]: Start accepts. Automaton has 8091 states and 37076 transitions. Word has length 21 [2020-10-21 22:13:33,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:13:33,520 INFO L481 AbstractCegarLoop]: Abstraction has 8091 states and 37076 transitions. [2020-10-21 22:13:33,520 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-21 22:13:33,520 INFO L276 IsEmpty]: Start isEmpty. Operand 8091 states and 37076 transitions. [2020-10-21 22:13:33,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 22:13:33,521 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:13:33,521 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:13:33,730 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2020-10-21 22:13:33,731 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]=== [2020-10-21 22:13:33,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:13:33,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1978290081, now seen corresponding path program 3 times [2020-10-21 22:13:33,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:13:33,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044239899] [2020-10-21 22:13:33,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:13:33,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:13:33,788 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 22:13:33,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044239899] [2020-10-21 22:13:33,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:13:33,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 22:13:33,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569510297] [2020-10-21 22:13:33,790 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 22:13:33,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:13:33,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 22:13:33,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 22:13:33,790 INFO L87 Difference]: Start difference. First operand 8091 states and 37076 transitions. Second operand 9 states. [2020-10-21 22:13:34,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:13:34,663 INFO L93 Difference]: Finished difference Result 26678 states and 100382 transitions. [2020-10-21 22:13:34,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:13:34,664 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-21 22:13:34,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:13:34,728 INFO L225 Difference]: With dead ends: 26678 [2020-10-21 22:13:34,728 INFO L226 Difference]: Without dead ends: 26666 [2020-10-21 22:13:34,729 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-21 22:13:34,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26666 states. [2020-10-21 22:13:35,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26666 to 7869. [2020-10-21 22:13:35,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7869 states. [2020-10-21 22:13:35,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7869 states to 7869 states and 36086 transitions. [2020-10-21 22:13:35,389 INFO L78 Accepts]: Start accepts. Automaton has 7869 states and 36086 transitions. Word has length 21 [2020-10-21 22:13:35,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:13:35,389 INFO L481 AbstractCegarLoop]: Abstraction has 7869 states and 36086 transitions. [2020-10-21 22:13:35,389 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 22:13:35,390 INFO L276 IsEmpty]: Start isEmpty. Operand 7869 states and 36086 transitions. [2020-10-21 22:13:35,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 22:13:35,391 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:13:35,391 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:13:35,391 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-21 22:13:35,391 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]=== [2020-10-21 22:13:35,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:13:35,391 INFO L82 PathProgramCache]: Analyzing trace with hash -1985700321, now seen corresponding path program 4 times [2020-10-21 22:13:35,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:13:35,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122551516] [2020-10-21 22:13:35,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:13:35,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:13:35,457 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 22:13:35,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122551516] [2020-10-21 22:13:35,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:13:35,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 22:13:35,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665700907] [2020-10-21 22:13:35,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 22:13:35,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:13:35,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 22:13:35,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 22:13:35,459 INFO L87 Difference]: Start difference. First operand 7869 states and 36086 transitions. Second operand 9 states. [2020-10-21 22:13:36,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:13:36,310 INFO L93 Difference]: Finished difference Result 26497 states and 99670 transitions. [2020-10-21 22:13:36,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:13:36,311 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-21 22:13:36,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:13:36,375 INFO L225 Difference]: With dead ends: 26497 [2020-10-21 22:13:36,375 INFO L226 Difference]: Without dead ends: 26481 [2020-10-21 22:13:36,376 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-21 22:13:36,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26481 states. [2020-10-21 22:13:36,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26481 to 7756. [2020-10-21 22:13:36,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7756 states. [2020-10-21 22:13:36,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7756 states to 7756 states and 35534 transitions. [2020-10-21 22:13:36,753 INFO L78 Accepts]: Start accepts. Automaton has 7756 states and 35534 transitions. Word has length 21 [2020-10-21 22:13:36,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:13:36,754 INFO L481 AbstractCegarLoop]: Abstraction has 7756 states and 35534 transitions. [2020-10-21 22:13:36,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 22:13:36,754 INFO L276 IsEmpty]: Start isEmpty. Operand 7756 states and 35534 transitions. [2020-10-21 22:13:36,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 22:13:36,755 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:13:36,755 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:13:36,755 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-21 22:13:36,756 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]=== [2020-10-21 22:13:36,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:13:36,756 INFO L82 PathProgramCache]: Analyzing trace with hash -522836100, now seen corresponding path program 1 times [2020-10-21 22:13:36,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:13:36,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130685515] [2020-10-21 22:13:36,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:13:36,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:13:36,796 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-21 22:13:36,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130685515] [2020-10-21 22:13:36,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:13:36,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 22:13:36,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120236584] [2020-10-21 22:13:36,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 22:13:36,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:13:36,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 22:13:36,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 22:13:36,798 INFO L87 Difference]: Start difference. First operand 7756 states and 35534 transitions. Second operand 5 states. [2020-10-21 22:13:36,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:13:36,968 INFO L93 Difference]: Finished difference Result 13259 states and 57521 transitions. [2020-10-21 22:13:36,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 22:13:36,969 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-21 22:13:36,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:13:37,004 INFO L225 Difference]: With dead ends: 13259 [2020-10-21 22:13:37,004 INFO L226 Difference]: Without dead ends: 13228 [2020-10-21 22:13:37,004 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 [2020-10-21 22:13:37,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13228 states. [2020-10-21 22:13:37,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13228 to 9263. [2020-10-21 22:13:37,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9263 states. [2020-10-21 22:13:37,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9263 states to 9263 states and 42388 transitions. [2020-10-21 22:13:37,289 INFO L78 Accepts]: Start accepts. Automaton has 9263 states and 42388 transitions. Word has length 21 [2020-10-21 22:13:37,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:13:37,289 INFO L481 AbstractCegarLoop]: Abstraction has 9263 states and 42388 transitions. [2020-10-21 22:13:37,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 22:13:37,289 INFO L276 IsEmpty]: Start isEmpty. Operand 9263 states and 42388 transitions. [2020-10-21 22:13:37,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 22:13:37,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:13:37,291 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:13:37,291 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-21 22:13:37,291 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]=== [2020-10-21 22:13:37,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:13:37,291 INFO L82 PathProgramCache]: Analyzing trace with hash 892708447, now seen corresponding path program 5 times [2020-10-21 22:13:37,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:13:37,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683122104] [2020-10-21 22:13:37,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:13:37,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:13:37,351 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 22:13:37,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683122104] [2020-10-21 22:13:37,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:13:37,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 22:13:37,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329047707] [2020-10-21 22:13:37,353 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 22:13:37,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:13:37,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 22:13:37,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 22:13:37,354 INFO L87 Difference]: Start difference. First operand 9263 states and 42388 transitions. Second operand 9 states. [2020-10-21 22:13:38,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:13:38,417 INFO L93 Difference]: Finished difference Result 29796 states and 113861 transitions. [2020-10-21 22:13:38,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:13:38,417 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-21 22:13:38,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:13:38,495 INFO L225 Difference]: With dead ends: 29796 [2020-10-21 22:13:38,496 INFO L226 Difference]: Without dead ends: 29778 [2020-10-21 22:13:38,496 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-21 22:13:38,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29778 states. [2020-10-21 22:13:38,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29778 to 8972. [2020-10-21 22:13:38,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8972 states. [2020-10-21 22:13:38,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8972 states to 8972 states and 41051 transitions. [2020-10-21 22:13:38,961 INFO L78 Accepts]: Start accepts. Automaton has 8972 states and 41051 transitions. Word has length 21 [2020-10-21 22:13:38,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:13:38,961 INFO L481 AbstractCegarLoop]: Abstraction has 8972 states and 41051 transitions. [2020-10-21 22:13:38,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 22:13:38,961 INFO L276 IsEmpty]: Start isEmpty. Operand 8972 states and 41051 transitions. [2020-10-21 22:13:38,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 22:13:38,963 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:13:38,963 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:13:38,963 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-21 22:13:38,963 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]=== [2020-10-21 22:13:38,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:13:38,963 INFO L82 PathProgramCache]: Analyzing trace with hash 912052447, now seen corresponding path program 6 times [2020-10-21 22:13:38,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:13:38,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001698143] [2020-10-21 22:13:38,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:13:38,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:13:39,028 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 22:13:39,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001698143] [2020-10-21 22:13:39,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:13:39,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 22:13:39,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589277332] [2020-10-21 22:13:39,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 22:13:39,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:13:39,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 22:13:39,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 22:13:39,030 INFO L87 Difference]: Start difference. First operand 8972 states and 41051 transitions. Second operand 9 states. [2020-10-21 22:13:39,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:13:39,971 INFO L93 Difference]: Finished difference Result 29387 states and 112119 transitions. [2020-10-21 22:13:39,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:13:39,972 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-21 22:13:39,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:13:40,037 INFO L225 Difference]: With dead ends: 29387 [2020-10-21 22:13:40,037 INFO L226 Difference]: Without dead ends: 29364 [2020-10-21 22:13:40,038 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-21 22:13:40,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29364 states. [2020-10-21 22:13:40,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29364 to 8573. [2020-10-21 22:13:40,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8573 states. [2020-10-21 22:13:40,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8573 states to 8573 states and 39353 transitions. [2020-10-21 22:13:40,480 INFO L78 Accepts]: Start accepts. Automaton has 8573 states and 39353 transitions. Word has length 21 [2020-10-21 22:13:40,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:13:40,480 INFO L481 AbstractCegarLoop]: Abstraction has 8573 states and 39353 transitions. [2020-10-21 22:13:40,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 22:13:40,480 INFO L276 IsEmpty]: Start isEmpty. Operand 8573 states and 39353 transitions. [2020-10-21 22:13:40,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-21 22:13:40,481 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:13:40,481 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:13:40,482 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-21 22:13:40,482 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]=== [2020-10-21 22:13:40,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:13:40,482 INFO L82 PathProgramCache]: Analyzing trace with hash -1391110006, now seen corresponding path program 1 times [2020-10-21 22:13:40,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:13:40,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378358859] [2020-10-21 22:13:40,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:13:40,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:13:40,528 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 22:13:40,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378358859] [2020-10-21 22:13:40,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492507489] [2020-10-21 22:13:40,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:13:40,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:13:40,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-21 22:13:40,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:13:40,671 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 22:13:40,672 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:13:40,672 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-21 22:13:40,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238856698] [2020-10-21 22:13:40,672 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-21 22:13:40,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:13:40,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-21 22:13:40,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-21 22:13:40,673 INFO L87 Difference]: Start difference. First operand 8573 states and 39353 transitions. Second operand 12 states. [2020-10-21 22:13:40,889 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2020-10-21 22:13:41,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:13:41,187 INFO L93 Difference]: Finished difference Result 19727 states and 80274 transitions. [2020-10-21 22:13:41,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 22:13:41,187 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-10-21 22:13:41,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:13:41,229 INFO L225 Difference]: With dead ends: 19727 [2020-10-21 22:13:41,229 INFO L226 Difference]: Without dead ends: 19703 [2020-10-21 22:13:41,229 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-10-21 22:13:41,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19703 states. [2020-10-21 22:13:41,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19703 to 8847. [2020-10-21 22:13:41,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8847 states. [2020-10-21 22:13:41,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8847 states to 8847 states and 40495 transitions. [2020-10-21 22:13:41,546 INFO L78 Accepts]: Start accepts. Automaton has 8847 states and 40495 transitions. Word has length 23 [2020-10-21 22:13:41,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:13:41,546 INFO L481 AbstractCegarLoop]: Abstraction has 8847 states and 40495 transitions. [2020-10-21 22:13:41,546 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-21 22:13:41,546 INFO L276 IsEmpty]: Start isEmpty. Operand 8847 states and 40495 transitions. [2020-10-21 22:13:41,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-21 22:13:41,549 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:13:41,549 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:13:41,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2020-10-21 22:13:41,750 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]=== [2020-10-21 22:13:41,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:13:41,751 INFO L82 PathProgramCache]: Analyzing trace with hash -1213836140, now seen corresponding path program 1 times [2020-10-21 22:13:41,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:13:41,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518789818] [2020-10-21 22:13:41,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:13:41,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:13:41,792 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 22:13:41,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518789818] [2020-10-21 22:13:41,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146904606] [2020-10-21 22:13:41,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:13:41,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:13:41,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-21 22:13:41,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:13:41,954 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 22:13:41,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:13:41,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-21 22:13:41,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727200800] [2020-10-21 22:13:41,955 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-21 22:13:41,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:13:41,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-21 22:13:41,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-21 22:13:41,956 INFO L87 Difference]: Start difference. First operand 8847 states and 40495 transitions. Second operand 12 states. [2020-10-21 22:13:42,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:13:42,396 INFO L93 Difference]: Finished difference Result 20670 states and 84217 transitions. [2020-10-21 22:13:42,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 22:13:42,397 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-10-21 22:13:42,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:13:42,445 INFO L225 Difference]: With dead ends: 20670 [2020-10-21 22:13:42,445 INFO L226 Difference]: Without dead ends: 20642 [2020-10-21 22:13:42,445 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-10-21 22:13:42,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20642 states. [2020-10-21 22:13:42,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20642 to 9111. [2020-10-21 22:13:42,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9111 states. [2020-10-21 22:13:42,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9111 states to 9111 states and 41667 transitions. [2020-10-21 22:13:42,790 INFO L78 Accepts]: Start accepts. Automaton has 9111 states and 41667 transitions. Word has length 23 [2020-10-21 22:13:42,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:13:42,790 INFO L481 AbstractCegarLoop]: Abstraction has 9111 states and 41667 transitions. [2020-10-21 22:13:42,790 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-21 22:13:42,790 INFO L276 IsEmpty]: Start isEmpty. Operand 9111 states and 41667 transitions. [2020-10-21 22:13:42,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-21 22:13:42,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:13:42,793 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:13:43,003 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:13:43,004 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]=== [2020-10-21 22:13:43,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:13:43,005 INFO L82 PathProgramCache]: Analyzing trace with hash 65683220, now seen corresponding path program 2 times [2020-10-21 22:13:43,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:13:43,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033520828] [2020-10-21 22:13:43,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:13:43,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:13:43,045 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-21 22:13:43,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033520828] [2020-10-21 22:13:43,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:13:43,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 22:13:43,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572123879] [2020-10-21 22:13:43,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 22:13:43,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:13:43,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 22:13:43,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 22:13:43,048 INFO L87 Difference]: Start difference. First operand 9111 states and 41667 transitions. Second operand 7 states. [2020-10-21 22:13:43,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:13:43,450 INFO L93 Difference]: Finished difference Result 20926 states and 85293 transitions. [2020-10-21 22:13:43,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 22:13:43,450 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-21 22:13:43,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:13:43,504 INFO L225 Difference]: With dead ends: 20926 [2020-10-21 22:13:43,504 INFO L226 Difference]: Without dead ends: 20889 [2020-10-21 22:13:43,504 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 [2020-10-21 22:13:43,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20889 states. [2020-10-21 22:13:43,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20889 to 9002. [2020-10-21 22:13:43,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9002 states. [2020-10-21 22:13:43,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9002 states to 9002 states and 41147 transitions. [2020-10-21 22:13:43,885 INFO L78 Accepts]: Start accepts. Automaton has 9002 states and 41147 transitions. Word has length 23 [2020-10-21 22:13:43,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:13:43,886 INFO L481 AbstractCegarLoop]: Abstraction has 9002 states and 41147 transitions. [2020-10-21 22:13:43,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 22:13:43,886 INFO L276 IsEmpty]: Start isEmpty. Operand 9002 states and 41147 transitions. [2020-10-21 22:13:44,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-21 22:13:44,021 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:13:44,022 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:13:44,022 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-21 22:13:44,022 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]=== [2020-10-21 22:13:44,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:13:44,022 INFO L82 PathProgramCache]: Analyzing trace with hash 65703370, now seen corresponding path program 2 times [2020-10-21 22:13:44,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:13:44,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659903628] [2020-10-21 22:13:44,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:13:44,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:13:44,065 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-21 22:13:44,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659903628] [2020-10-21 22:13:44,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:13:44,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 22:13:44,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395186434] [2020-10-21 22:13:44,066 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 22:13:44,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:13:44,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 22:13:44,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 22:13:44,066 INFO L87 Difference]: Start difference. First operand 9002 states and 41147 transitions. Second operand 7 states. [2020-10-21 22:13:44,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:13:44,444 INFO L93 Difference]: Finished difference Result 20671 states and 84034 transitions. [2020-10-21 22:13:44,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 22:13:44,444 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-21 22:13:44,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:13:44,489 INFO L225 Difference]: With dead ends: 20671 [2020-10-21 22:13:44,489 INFO L226 Difference]: Without dead ends: 20634 [2020-10-21 22:13:44,489 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 [2020-10-21 22:13:44,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20634 states. [2020-10-21 22:13:44,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20634 to 8910. [2020-10-21 22:13:44,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8910 states. [2020-10-21 22:13:44,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8910 states to 8910 states and 40716 transitions. [2020-10-21 22:13:44,821 INFO L78 Accepts]: Start accepts. Automaton has 8910 states and 40716 transitions. Word has length 23 [2020-10-21 22:13:44,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:13:44,821 INFO L481 AbstractCegarLoop]: Abstraction has 8910 states and 40716 transitions. [2020-10-21 22:13:44,821 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 22:13:44,821 INFO L276 IsEmpty]: Start isEmpty. Operand 8910 states and 40716 transitions. [2020-10-21 22:13:44,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-21 22:13:44,823 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:13:44,824 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:13:44,824 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-21 22:13:44,824 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]=== [2020-10-21 22:13:44,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:13:44,824 INFO L82 PathProgramCache]: Analyzing trace with hash 65695651, now seen corresponding path program 1 times [2020-10-21 22:13:44,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:13:44,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009013053] [2020-10-21 22:13:44,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:13:44,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:13:44,876 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-21 22:13:44,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009013053] [2020-10-21 22:13:44,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:13:44,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 22:13:44,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904351839] [2020-10-21 22:13:44,877 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 22:13:44,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:13:44,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 22:13:44,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 22:13:44,878 INFO L87 Difference]: Start difference. First operand 8910 states and 40716 transitions. Second operand 7 states. [2020-10-21 22:13:45,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:13:45,266 INFO L93 Difference]: Finished difference Result 21060 states and 85755 transitions. [2020-10-21 22:13:45,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 22:13:45,267 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-21 22:13:45,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:13:45,312 INFO L225 Difference]: With dead ends: 21060 [2020-10-21 22:13:45,312 INFO L226 Difference]: Without dead ends: 21023 [2020-10-21 22:13:45,313 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-21 22:13:45,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21023 states. [2020-10-21 22:13:45,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21023 to 9327. [2020-10-21 22:13:45,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9327 states. [2020-10-21 22:13:45,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9327 states to 9327 states and 42562 transitions. [2020-10-21 22:13:45,646 INFO L78 Accepts]: Start accepts. Automaton has 9327 states and 42562 transitions. Word has length 23 [2020-10-21 22:13:45,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:13:45,647 INFO L481 AbstractCegarLoop]: Abstraction has 9327 states and 42562 transitions. [2020-10-21 22:13:45,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 22:13:45,647 INFO L276 IsEmpty]: Start isEmpty. Operand 9327 states and 42562 transitions. [2020-10-21 22:13:45,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-21 22:13:45,649 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:13:45,649 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:13:45,649 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-21 22:13:45,649 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]=== [2020-10-21 22:13:45,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:13:45,649 INFO L82 PathProgramCache]: Analyzing trace with hash 61469731, now seen corresponding path program 2 times [2020-10-21 22:13:45,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:13:45,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432651720] [2020-10-21 22:13:45,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:13:45,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:13:45,695 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-21 22:13:45,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432651720] [2020-10-21 22:13:45,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:13:45,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 22:13:45,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425404875] [2020-10-21 22:13:45,697 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 22:13:45,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:13:45,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 22:13:45,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 22:13:45,698 INFO L87 Difference]: Start difference. First operand 9327 states and 42562 transitions. Second operand 7 states. [2020-10-21 22:13:46,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:13:46,087 INFO L93 Difference]: Finished difference Result 21207 states and 86283 transitions. [2020-10-21 22:13:46,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 22:13:46,087 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-21 22:13:46,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:13:46,133 INFO L225 Difference]: With dead ends: 21207 [2020-10-21 22:13:46,134 INFO L226 Difference]: Without dead ends: 21170 [2020-10-21 22:13:46,134 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-21 22:13:46,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21170 states. [2020-10-21 22:13:46,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21170 to 9426. [2020-10-21 22:13:46,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9426 states. [2020-10-21 22:13:46,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9426 states to 9426 states and 43057 transitions. [2020-10-21 22:13:46,471 INFO L78 Accepts]: Start accepts. Automaton has 9426 states and 43057 transitions. Word has length 23 [2020-10-21 22:13:46,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:13:46,471 INFO L481 AbstractCegarLoop]: Abstraction has 9426 states and 43057 transitions. [2020-10-21 22:13:46,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 22:13:46,472 INFO L276 IsEmpty]: Start isEmpty. Operand 9426 states and 43057 transitions. [2020-10-21 22:13:46,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 22:13:46,474 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:13:46,474 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:13:46,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-21 22:13:46,475 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]=== [2020-10-21 22:13:46,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:13:46,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1893562914, now seen corresponding path program 1 times [2020-10-21 22:13:46,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:13:46,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516430485] [2020-10-21 22:13:46,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:13:46,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:13:46,543 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 22:13:46,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516430485] [2020-10-21 22:13:46,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178868390] [2020-10-21 22:13:46,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:13:46,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:13:46,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 22:13:46,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:13:46,904 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 22:13:46,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:13:46,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-21 22:13:46,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397222882] [2020-10-21 22:13:46,906 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-21 22:13:46,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:13:46,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-21 22:13:46,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-10-21 22:13:46,907 INFO L87 Difference]: Start difference. First operand 9426 states and 43057 transitions. Second operand 16 states. [2020-10-21 22:13:48,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:13:48,232 INFO L93 Difference]: Finished difference Result 30145 states and 115754 transitions. [2020-10-21 22:13:48,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:13:48,233 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-21 22:13:48,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:13:48,328 INFO L225 Difference]: With dead ends: 30145 [2020-10-21 22:13:48,328 INFO L226 Difference]: Without dead ends: 30125 [2020-10-21 22:13:48,329 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=394, Invalid=1088, Unknown=0, NotChecked=0, Total=1482 [2020-10-21 22:13:48,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30125 states. [2020-10-21 22:13:48,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30125 to 9346. [2020-10-21 22:13:48,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9346 states. [2020-10-21 22:13:48,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9346 states to 9346 states and 42602 transitions. [2020-10-21 22:13:48,789 INFO L78 Accepts]: Start accepts. Automaton has 9346 states and 42602 transitions. Word has length 25 [2020-10-21 22:13:48,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:13:48,789 INFO L481 AbstractCegarLoop]: Abstraction has 9346 states and 42602 transitions. [2020-10-21 22:13:48,789 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-21 22:13:48,789 INFO L276 IsEmpty]: Start isEmpty. Operand 9346 states and 42602 transitions. [2020-10-21 22:13:48,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 22:13:48,792 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:13:48,793 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:13:48,993 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2020-10-21 22:13:48,994 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]=== [2020-10-21 22:13:48,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:13:48,994 INFO L82 PathProgramCache]: Analyzing trace with hash -1121885022, now seen corresponding path program 2 times [2020-10-21 22:13:48,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:13:48,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456908654] [2020-10-21 22:13:48,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:13:49,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:13:49,054 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 22:13:49,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456908654] [2020-10-21 22:13:49,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150889467] [2020-10-21 22:13:49,055 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-21 22:13:49,139 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 22:13:49,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 22:13:49,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 22:13:49,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:13:49,250 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 22:13:49,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:13:49,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-21 22:13:49,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506953351] [2020-10-21 22:13:49,251 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-21 22:13:49,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:13:49,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-21 22:13:49,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-10-21 22:13:49,252 INFO L87 Difference]: Start difference. First operand 9346 states and 42602 transitions. Second operand 16 states. [2020-10-21 22:13:50,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:13:50,420 INFO L93 Difference]: Finished difference Result 29656 states and 113703 transitions. [2020-10-21 22:13:50,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:13:50,421 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-21 22:13:50,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:13:50,495 INFO L225 Difference]: With dead ends: 29656 [2020-10-21 22:13:50,495 INFO L226 Difference]: Without dead ends: 29634 [2020-10-21 22:13:50,495 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=394, Invalid=1088, Unknown=0, NotChecked=0, Total=1482 [2020-10-21 22:13:50,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29634 states. [2020-10-21 22:13:50,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29634 to 9343. [2020-10-21 22:13:50,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9343 states. [2020-10-21 22:13:50,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9343 states to 9343 states and 42547 transitions. [2020-10-21 22:13:50,925 INFO L78 Accepts]: Start accepts. Automaton has 9343 states and 42547 transitions. Word has length 25 [2020-10-21 22:13:50,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:13:50,926 INFO L481 AbstractCegarLoop]: Abstraction has 9343 states and 42547 transitions. [2020-10-21 22:13:50,926 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-21 22:13:50,926 INFO L276 IsEmpty]: Start isEmpty. Operand 9343 states and 42547 transitions. [2020-10-21 22:13:50,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 22:13:50,928 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:13:50,929 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:13:51,129 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2020-10-21 22:13:51,130 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]=== [2020-10-21 22:13:51,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:13:51,130 INFO L82 PathProgramCache]: Analyzing trace with hash -1121872591, now seen corresponding path program 1 times [2020-10-21 22:13:51,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:13:51,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356546006] [2020-10-21 22:13:51,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:13:51,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:13:51,190 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 22:13:51,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356546006] [2020-10-21 22:13:51,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743568782] [2020-10-21 22:13:51,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:13:51,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:13:51,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 22:13:51,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:13:51,528 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 22:13:51,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:13:51,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-21 22:13:51,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534248731] [2020-10-21 22:13:51,529 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-21 22:13:51,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:13:51,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-21 22:13:51,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-10-21 22:13:51,530 INFO L87 Difference]: Start difference. First operand 9343 states and 42547 transitions. Second operand 16 states. [2020-10-21 22:13:52,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:13:52,591 INFO L93 Difference]: Finished difference Result 29316 states and 112409 transitions. [2020-10-21 22:13:52,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:13:52,591 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-21 22:13:52,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:13:52,654 INFO L225 Difference]: With dead ends: 29316 [2020-10-21 22:13:52,654 INFO L226 Difference]: Without dead ends: 29296 [2020-10-21 22:13:52,655 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=394, Invalid=1088, Unknown=0, NotChecked=0, Total=1482 [2020-10-21 22:13:52,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29296 states. [2020-10-21 22:13:53,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29296 to 9260. [2020-10-21 22:13:53,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9260 states. [2020-10-21 22:13:53,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9260 states to 9260 states and 42114 transitions. [2020-10-21 22:13:53,094 INFO L78 Accepts]: Start accepts. Automaton has 9260 states and 42114 transitions. Word has length 25 [2020-10-21 22:13:53,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:13:53,094 INFO L481 AbstractCegarLoop]: Abstraction has 9260 states and 42114 transitions. [2020-10-21 22:13:53,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-21 22:13:53,095 INFO L276 IsEmpty]: Start isEmpty. Operand 9260 states and 42114 transitions. [2020-10-21 22:13:53,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 22:13:53,097 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:13:53,097 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:13:53,298 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2020-10-21 22:13:53,298 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]=== [2020-10-21 22:13:53,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:13:53,299 INFO L82 PathProgramCache]: Analyzing trace with hash -1126098511, now seen corresponding path program 2 times [2020-10-21 22:13:53,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:13:53,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695583347] [2020-10-21 22:13:53,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:13:53,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:13:53,360 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 22:13:53,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695583347] [2020-10-21 22:13:53,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427677501] [2020-10-21 22:13:53,361 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-21 22:13:53,456 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 22:13:53,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 22:13:53,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 22:13:53,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:13:53,569 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 22:13:53,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:13:53,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-21 22:13:53,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949113773] [2020-10-21 22:13:53,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-21 22:13:53,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:13:53,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-21 22:13:53,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-10-21 22:13:53,570 INFO L87 Difference]: Start difference. First operand 9260 states and 42114 transitions. Second operand 16 states. [2020-10-21 22:13:54,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:13:54,639 INFO L93 Difference]: Finished difference Result 29093 states and 111462 transitions. [2020-10-21 22:13:54,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:13:54,640 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-21 22:13:54,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:13:54,704 INFO L225 Difference]: With dead ends: 29093 [2020-10-21 22:13:54,704 INFO L226 Difference]: Without dead ends: 29071 [2020-10-21 22:13:54,705 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=394, Invalid=1088, Unknown=0, NotChecked=0, Total=1482 [2020-10-21 22:13:54,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29071 states. [2020-10-21 22:13:55,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29071 to 9176. [2020-10-21 22:13:55,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9176 states. [2020-10-21 22:13:55,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9176 states to 9176 states and 41695 transitions. [2020-10-21 22:13:55,125 INFO L78 Accepts]: Start accepts. Automaton has 9176 states and 41695 transitions. Word has length 25 [2020-10-21 22:13:55,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:13:55,125 INFO L481 AbstractCegarLoop]: Abstraction has 9176 states and 41695 transitions. [2020-10-21 22:13:55,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-21 22:13:55,125 INFO L276 IsEmpty]: Start isEmpty. Operand 9176 states and 41695 transitions. [2020-10-21 22:13:55,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 22:13:55,128 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:13:55,128 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:13:55,329 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:13:55,329 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]=== [2020-10-21 22:13:55,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:13:55,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1814954082, now seen corresponding path program 3 times [2020-10-21 22:13:55,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:13:55,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585735536] [2020-10-21 22:13:55,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:13:55,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:13:55,388 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 22:13:55,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585735536] [2020-10-21 22:13:55,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009654546] [2020-10-21 22:13:55,388 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-21 22:13:55,466 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-21 22:13:55,466 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 22:13:55,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 22:13:55,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:13:55,574 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 22:13:55,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:13:55,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-21 22:13:55,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39038825] [2020-10-21 22:13:55,575 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-21 22:13:55,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:13:55,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-21 22:13:55,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-10-21 22:13:55,576 INFO L87 Difference]: Start difference. First operand 9176 states and 41695 transitions. Second operand 16 states. [2020-10-21 22:13:56,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:13:56,544 INFO L93 Difference]: Finished difference Result 29030 states and 111196 transitions. [2020-10-21 22:13:56,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:13:56,545 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-21 22:13:56,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:13:56,605 INFO L225 Difference]: With dead ends: 29030 [2020-10-21 22:13:56,605 INFO L226 Difference]: Without dead ends: 29010 [2020-10-21 22:13:56,605 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=394, Invalid=1088, Unknown=0, NotChecked=0, Total=1482 [2020-10-21 22:13:56,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29010 states. [2020-10-21 22:13:57,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29010 to 9004. [2020-10-21 22:13:57,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9004 states. [2020-10-21 22:13:57,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9004 states to 9004 states and 40905 transitions. [2020-10-21 22:13:57,060 INFO L78 Accepts]: Start accepts. Automaton has 9004 states and 40905 transitions. Word has length 25 [2020-10-21 22:13:57,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:13:57,060 INFO L481 AbstractCegarLoop]: Abstraction has 9004 states and 40905 transitions. [2020-10-21 22:13:57,061 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-21 22:13:57,061 INFO L276 IsEmpty]: Start isEmpty. Operand 9004 states and 40905 transitions. [2020-10-21 22:13:57,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 22:13:57,064 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:13:57,064 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:13:57,264 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2020-10-21 22:13:57,265 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]=== [2020-10-21 22:13:57,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:13:57,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1734595810, now seen corresponding path program 4 times [2020-10-21 22:13:57,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:13:57,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940737224] [2020-10-21 22:13:57,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:13:57,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:13:57,324 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 22:13:57,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940737224] [2020-10-21 22:13:57,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319971837] [2020-10-21 22:13:57,325 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-21 22:13:57,407 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-21 22:13:57,407 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 22:13:57,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 22:13:57,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:13:57,520 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 22:13:57,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:13:57,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-21 22:13:57,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349122969] [2020-10-21 22:13:57,521 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-21 22:13:57,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:13:57,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-21 22:13:57,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-10-21 22:13:57,522 INFO L87 Difference]: Start difference. First operand 9004 states and 40905 transitions. Second operand 16 states. [2020-10-21 22:13:58,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:13:58,546 INFO L93 Difference]: Finished difference Result 29275 states and 112216 transitions. [2020-10-21 22:13:58,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:13:58,547 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-21 22:13:58,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:13:58,622 INFO L225 Difference]: With dead ends: 29275 [2020-10-21 22:13:58,622 INFO L226 Difference]: Without dead ends: 29253 [2020-10-21 22:13:58,622 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=394, Invalid=1088, Unknown=0, NotChecked=0, Total=1482 [2020-10-21 22:13:58,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29253 states. [2020-10-21 22:13:59,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29253 to 9001. [2020-10-21 22:13:59,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9001 states. [2020-10-21 22:13:59,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9001 states to 9001 states and 40850 transitions. [2020-10-21 22:13:59,060 INFO L78 Accepts]: Start accepts. Automaton has 9001 states and 40850 transitions. Word has length 25 [2020-10-21 22:13:59,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:13:59,060 INFO L481 AbstractCegarLoop]: Abstraction has 9001 states and 40850 transitions. [2020-10-21 22:13:59,060 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-21 22:13:59,060 INFO L276 IsEmpty]: Start isEmpty. Operand 9001 states and 40850 transitions. [2020-10-21 22:13:59,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 22:13:59,064 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:13:59,064 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:13:59,264 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:13:59,265 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]=== [2020-10-21 22:13:59,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:13:59,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1734588091, now seen corresponding path program 1 times [2020-10-21 22:13:59,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:13:59,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682855021] [2020-10-21 22:13:59,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:13:59,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:13:59,324 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 22:13:59,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682855021] [2020-10-21 22:13:59,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044718428] [2020-10-21 22:13:59,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:13:59,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:13:59,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 22:13:59,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:13:59,518 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 22:13:59,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:13:59,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-21 22:13:59,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271301136] [2020-10-21 22:13:59,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-21 22:13:59,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:13:59,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-21 22:13:59,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-10-21 22:13:59,520 INFO L87 Difference]: Start difference. First operand 9001 states and 40850 transitions. Second operand 16 states. [2020-10-21 22:14:00,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:14:00,694 INFO L93 Difference]: Finished difference Result 29105 states and 111801 transitions. [2020-10-21 22:14:00,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:14:00,694 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-21 22:14:00,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:14:00,770 INFO L225 Difference]: With dead ends: 29105 [2020-10-21 22:14:00,770 INFO L226 Difference]: Without dead ends: 29085 [2020-10-21 22:14:00,770 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=394, Invalid=1088, Unknown=0, NotChecked=0, Total=1482 [2020-10-21 22:14:00,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29085 states. [2020-10-21 22:14:01,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29085 to 8951. [2020-10-21 22:14:01,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8951 states. [2020-10-21 22:14:01,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8951 states to 8951 states and 40581 transitions. [2020-10-21 22:14:01,396 INFO L78 Accepts]: Start accepts. Automaton has 8951 states and 40581 transitions. Word has length 25 [2020-10-21 22:14:01,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:14:01,396 INFO L481 AbstractCegarLoop]: Abstraction has 8951 states and 40581 transitions. [2020-10-21 22:14:01,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-21 22:14:01,396 INFO L276 IsEmpty]: Start isEmpty. Operand 8951 states and 40581 transitions. [2020-10-21 22:14:01,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 22:14:01,399 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:14:01,399 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:14:01,600 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:14:01,600 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]=== [2020-10-21 22:14:01,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:14:01,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1730362171, now seen corresponding path program 2 times [2020-10-21 22:14:01,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:14:01,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930959117] [2020-10-21 22:14:01,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:14:01,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:14:01,668 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 22:14:01,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930959117] [2020-10-21 22:14:01,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658903269] [2020-10-21 22:14:01,668 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-21 22:14:01,754 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 22:14:01,754 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 22:14:01,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 22:14:01,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:14:01,895 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 22:14:01,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:14:01,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-21 22:14:01,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958718064] [2020-10-21 22:14:01,896 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-21 22:14:01,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:14:01,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-21 22:14:01,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-10-21 22:14:01,897 INFO L87 Difference]: Start difference. First operand 8951 states and 40581 transitions. Second operand 16 states. [2020-10-21 22:14:03,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:14:03,135 INFO L93 Difference]: Finished difference Result 28806 states and 110558 transitions. [2020-10-21 22:14:03,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:14:03,135 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-21 22:14:03,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:14:03,202 INFO L225 Difference]: With dead ends: 28806 [2020-10-21 22:14:03,203 INFO L226 Difference]: Without dead ends: 28779 [2020-10-21 22:14:03,203 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=394, Invalid=1088, Unknown=0, NotChecked=0, Total=1482 [2020-10-21 22:14:03,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28779 states. [2020-10-21 22:14:03,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28779 to 8841. [2020-10-21 22:14:03,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8841 states. [2020-10-21 22:14:03,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8841 states to 8841 states and 40058 transitions. [2020-10-21 22:14:03,611 INFO L78 Accepts]: Start accepts. Automaton has 8841 states and 40058 transitions. Word has length 25 [2020-10-21 22:14:03,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:14:03,611 INFO L481 AbstractCegarLoop]: Abstraction has 8841 states and 40058 transitions. [2020-10-21 22:14:03,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-21 22:14:03,611 INFO L276 IsEmpty]: Start isEmpty. Operand 8841 states and 40058 transitions. [2020-10-21 22:14:03,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 22:14:03,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:14:03,616 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:14:03,816 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2020-10-21 22:14:03,817 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]=== [2020-10-21 22:14:03,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:14:03,817 INFO L82 PathProgramCache]: Analyzing trace with hash -1302913182, now seen corresponding path program 5 times [2020-10-21 22:14:03,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:14:03,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246694563] [2020-10-21 22:14:03,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:14:03,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:14:03,875 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-21 22:14:03,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246694563] [2020-10-21 22:14:03,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:14:03,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 22:14:03,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091813736] [2020-10-21 22:14:03,876 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 22:14:03,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:14:03,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 22:14:03,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 22:14:03,877 INFO L87 Difference]: Start difference. First operand 8841 states and 40058 transitions. Second operand 9 states. [2020-10-21 22:14:04,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:14:04,842 INFO L93 Difference]: Finished difference Result 28597 states and 109522 transitions. [2020-10-21 22:14:04,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:14:04,843 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-21 22:14:04,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:14:04,909 INFO L225 Difference]: With dead ends: 28597 [2020-10-21 22:14:04,909 INFO L226 Difference]: Without dead ends: 28577 [2020-10-21 22:14:04,909 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-21 22:14:05,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28577 states. [2020-10-21 22:14:05,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28577 to 8616. [2020-10-21 22:14:05,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8616 states. [2020-10-21 22:14:05,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8616 states to 8616 states and 39029 transitions. [2020-10-21 22:14:05,335 INFO L78 Accepts]: Start accepts. Automaton has 8616 states and 39029 transitions. Word has length 25 [2020-10-21 22:14:05,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:14:05,336 INFO L481 AbstractCegarLoop]: Abstraction has 8616 states and 39029 transitions. [2020-10-21 22:14:05,336 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 22:14:05,336 INFO L276 IsEmpty]: Start isEmpty. Operand 8616 states and 39029 transitions. [2020-10-21 22:14:05,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 22:14:05,339 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:14:05,340 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:14:05,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2020-10-21 22:14:05,340 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]=== [2020-10-21 22:14:05,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:14:05,340 INFO L82 PathProgramCache]: Analyzing trace with hash -1302920901, now seen corresponding path program 3 times [2020-10-21 22:14:05,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:14:05,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712163774] [2020-10-21 22:14:05,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:14:05,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:14:05,406 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-21 22:14:05,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712163774] [2020-10-21 22:14:05,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:14:05,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 22:14:05,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143007750] [2020-10-21 22:14:05,407 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 22:14:05,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:14:05,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 22:14:05,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 22:14:05,408 INFO L87 Difference]: Start difference. First operand 8616 states and 39029 transitions. Second operand 9 states. [2020-10-21 22:14:06,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:14:06,457 INFO L93 Difference]: Finished difference Result 28374 states and 108800 transitions. [2020-10-21 22:14:06,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:14:06,458 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-21 22:14:06,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:14:06,544 INFO L225 Difference]: With dead ends: 28374 [2020-10-21 22:14:06,544 INFO L226 Difference]: Without dead ends: 28354 [2020-10-21 22:14:06,544 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-21 22:14:06,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28354 states. [2020-10-21 22:14:06,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28354 to 8466. [2020-10-21 22:14:06,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8466 states. [2020-10-21 22:14:06,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8466 states to 8466 states and 38348 transitions. [2020-10-21 22:14:06,921 INFO L78 Accepts]: Start accepts. Automaton has 8466 states and 38348 transitions. Word has length 25 [2020-10-21 22:14:06,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:14:06,921 INFO L481 AbstractCegarLoop]: Abstraction has 8466 states and 38348 transitions. [2020-10-21 22:14:06,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 22:14:06,922 INFO L276 IsEmpty]: Start isEmpty. Operand 8466 states and 38348 transitions. [2020-10-21 22:14:06,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 22:14:06,926 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:14:06,926 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:14:06,926 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2020-10-21 22:14:06,926 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]=== [2020-10-21 22:14:06,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:14:06,927 INFO L82 PathProgramCache]: Analyzing trace with hash -1283569182, now seen corresponding path program 6 times [2020-10-21 22:14:06,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:14:06,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015582970] [2020-10-21 22:14:06,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:14:06,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:14:06,992 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-21 22:14:06,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015582970] [2020-10-21 22:14:06,992 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:14:06,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 22:14:06,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754437376] [2020-10-21 22:14:06,993 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 22:14:06,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:14:06,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 22:14:06,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 22:14:06,994 INFO L87 Difference]: Start difference. First operand 8466 states and 38348 transitions. Second operand 9 states. [2020-10-21 22:14:08,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:14:08,247 INFO L93 Difference]: Finished difference Result 27919 states and 106695 transitions. [2020-10-21 22:14:08,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:14:08,248 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-21 22:14:08,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:14:08,360 INFO L225 Difference]: With dead ends: 27919 [2020-10-21 22:14:08,361 INFO L226 Difference]: Without dead ends: 27892 [2020-10-21 22:14:08,361 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-21 22:14:08,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27892 states. [2020-10-21 22:14:09,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27892 to 8151. [2020-10-21 22:14:09,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8151 states. [2020-10-21 22:14:09,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8151 states to 8151 states and 36997 transitions. [2020-10-21 22:14:09,069 INFO L78 Accepts]: Start accepts. Automaton has 8151 states and 36997 transitions. Word has length 25 [2020-10-21 22:14:09,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:14:09,070 INFO L481 AbstractCegarLoop]: Abstraction has 8151 states and 36997 transitions. [2020-10-21 22:14:09,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 22:14:09,070 INFO L276 IsEmpty]: Start isEmpty. Operand 8151 states and 36997 transitions. [2020-10-21 22:14:09,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 22:14:09,073 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:14:09,073 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:14:09,073 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2020-10-21 22:14:09,073 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]=== [2020-10-21 22:14:09,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:14:09,074 INFO L82 PathProgramCache]: Analyzing trace with hash -1283556751, now seen corresponding path program 3 times [2020-10-21 22:14:09,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:14:09,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757478003] [2020-10-21 22:14:09,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:14:09,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:14:09,145 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-21 22:14:09,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757478003] [2020-10-21 22:14:09,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:14:09,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 22:14:09,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075512745] [2020-10-21 22:14:09,147 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 22:14:09,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:14:09,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 22:14:09,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 22:14:09,148 INFO L87 Difference]: Start difference. First operand 8151 states and 36997 transitions. Second operand 9 states. [2020-10-21 22:14:10,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:14:10,150 INFO L93 Difference]: Finished difference Result 27732 states and 106194 transitions. [2020-10-21 22:14:10,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:14:10,151 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-21 22:14:10,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:14:10,214 INFO L225 Difference]: With dead ends: 27732 [2020-10-21 22:14:10,214 INFO L226 Difference]: Without dead ends: 27712 [2020-10-21 22:14:10,214 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-21 22:14:10,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27712 states. [2020-10-21 22:14:10,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27712 to 8053. [2020-10-21 22:14:10,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8053 states. [2020-10-21 22:14:10,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8053 states to 8053 states and 36561 transitions. [2020-10-21 22:14:10,615 INFO L78 Accepts]: Start accepts. Automaton has 8053 states and 36561 transitions. Word has length 25 [2020-10-21 22:14:10,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:14:10,615 INFO L481 AbstractCegarLoop]: Abstraction has 8053 states and 36561 transitions. [2020-10-21 22:14:10,615 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 22:14:10,615 INFO L276 IsEmpty]: Start isEmpty. Operand 8053 states and 36561 transitions. [2020-10-21 22:14:10,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 22:14:10,618 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:14:10,618 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:14:10,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2020-10-21 22:14:10,619 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]=== [2020-10-21 22:14:10,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:14:10,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1290987141, now seen corresponding path program 4 times [2020-10-21 22:14:10,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:14:10,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882170875] [2020-10-21 22:14:10,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:14:10,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:14:10,689 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-21 22:14:10,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882170875] [2020-10-21 22:14:10,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:14:10,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 22:14:10,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845468957] [2020-10-21 22:14:10,690 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 22:14:10,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:14:10,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 22:14:10,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 22:14:10,691 INFO L87 Difference]: Start difference. First operand 8053 states and 36561 transitions. Second operand 9 states. [2020-10-21 22:14:11,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:14:11,811 INFO L93 Difference]: Finished difference Result 27752 states and 106300 transitions. [2020-10-21 22:14:11,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:14:11,812 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-21 22:14:11,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:14:11,881 INFO L225 Difference]: With dead ends: 27752 [2020-10-21 22:14:11,881 INFO L226 Difference]: Without dead ends: 27725 [2020-10-21 22:14:11,882 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-21 22:14:12,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27725 states. [2020-10-21 22:14:12,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27725 to 8053. [2020-10-21 22:14:12,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8053 states. [2020-10-21 22:14:12,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8053 states to 8053 states and 36529 transitions. [2020-10-21 22:14:12,489 INFO L78 Accepts]: Start accepts. Automaton has 8053 states and 36529 transitions. Word has length 25 [2020-10-21 22:14:12,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:14:12,489 INFO L481 AbstractCegarLoop]: Abstraction has 8053 states and 36529 transitions. [2020-10-21 22:14:12,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 22:14:12,489 INFO L276 IsEmpty]: Start isEmpty. Operand 8053 states and 36529 transitions. [2020-10-21 22:14:12,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 22:14:12,492 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:14:12,492 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:14:12,493 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2020-10-21 22:14:12,493 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]=== [2020-10-21 22:14:12,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:14:12,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1290966991, now seen corresponding path program 4 times [2020-10-21 22:14:12,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:14:12,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028830084] [2020-10-21 22:14:12,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:14:12,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:14:12,557 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-21 22:14:12,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028830084] [2020-10-21 22:14:12,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:14:12,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 22:14:12,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257769513] [2020-10-21 22:14:12,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 22:14:12,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:14:12,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 22:14:12,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 22:14:12,559 INFO L87 Difference]: Start difference. First operand 8053 states and 36529 transitions. Second operand 9 states. [2020-10-21 22:14:13,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:14:13,493 INFO L93 Difference]: Finished difference Result 27429 states and 105043 transitions. [2020-10-21 22:14:13,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:14:13,494 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-21 22:14:13,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:14:13,552 INFO L225 Difference]: With dead ends: 27429 [2020-10-21 22:14:13,553 INFO L226 Difference]: Without dead ends: 27402 [2020-10-21 22:14:13,553 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-21 22:14:13,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27402 states. [2020-10-21 22:14:13,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27402 to 7996. [2020-10-21 22:14:13,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7996 states. [2020-10-21 22:14:13,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7996 states to 7996 states and 36246 transitions. [2020-10-21 22:14:13,933 INFO L78 Accepts]: Start accepts. Automaton has 7996 states and 36246 transitions. Word has length 25 [2020-10-21 22:14:13,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:14:13,934 INFO L481 AbstractCegarLoop]: Abstraction has 7996 states and 36246 transitions. [2020-10-21 22:14:13,934 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 22:14:13,934 INFO L276 IsEmpty]: Start isEmpty. Operand 7996 states and 36246 transitions. [2020-10-21 22:14:13,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 22:14:13,937 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:14:13,937 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:14:13,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2020-10-21 22:14:13,937 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]=== [2020-10-21 22:14:13,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:14:13,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1806156920, now seen corresponding path program 1 times [2020-10-21 22:14:13,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:14:13,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880567588] [2020-10-21 22:14:13,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:14:13,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:14:13,960 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-21 22:14:13,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880567588] [2020-10-21 22:14:13,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:14:13,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 22:14:13,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857374484] [2020-10-21 22:14:13,961 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 22:14:13,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:14:13,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 22:14:13,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 22:14:13,962 INFO L87 Difference]: Start difference. First operand 7996 states and 36246 transitions. Second operand 5 states. [2020-10-21 22:14:14,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:14:14,137 INFO L93 Difference]: Finished difference Result 13000 states and 56551 transitions. [2020-10-21 22:14:14,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 22:14:14,138 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-10-21 22:14:14,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:14:14,167 INFO L225 Difference]: With dead ends: 13000 [2020-10-21 22:14:14,167 INFO L226 Difference]: Without dead ends: 12968 [2020-10-21 22:14:14,167 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 [2020-10-21 22:14:14,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12968 states. [2020-10-21 22:14:14,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12968 to 9425. [2020-10-21 22:14:14,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9425 states. [2020-10-21 22:14:14,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9425 states to 9425 states and 42312 transitions. [2020-10-21 22:14:14,421 INFO L78 Accepts]: Start accepts. Automaton has 9425 states and 42312 transitions. Word has length 25 [2020-10-21 22:14:14,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:14:14,421 INFO L481 AbstractCegarLoop]: Abstraction has 9425 states and 42312 transitions. [2020-10-21 22:14:14,421 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 22:14:14,421 INFO L276 IsEmpty]: Start isEmpty. Operand 9425 states and 42312 transitions. [2020-10-21 22:14:14,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 22:14:14,424 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:14:14,424 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:14:14,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2020-10-21 22:14:14,424 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]=== [2020-10-21 22:14:14,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:14:14,424 INFO L82 PathProgramCache]: Analyzing trace with hash -1073288645, now seen corresponding path program 5 times [2020-10-21 22:14:14,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:14:14,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368197985] [2020-10-21 22:14:14,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:14:14,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:14:14,487 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-21 22:14:14,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368197985] [2020-10-21 22:14:14,487 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:14:14,487 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 22:14:14,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650554887] [2020-10-21 22:14:14,488 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 22:14:14,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:14:14,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 22:14:14,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 22:14:14,488 INFO L87 Difference]: Start difference. First operand 9425 states and 42312 transitions. Second operand 9 states. [2020-10-21 22:14:15,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:14:15,407 INFO L93 Difference]: Finished difference Result 30960 states and 119709 transitions. [2020-10-21 22:14:15,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:14:15,408 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-21 22:14:15,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:14:15,474 INFO L225 Difference]: With dead ends: 30960 [2020-10-21 22:14:15,474 INFO L226 Difference]: Without dead ends: 30934 [2020-10-21 22:14:15,474 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-21 22:14:15,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30934 states. [2020-10-21 22:14:15,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30934 to 9270. [2020-10-21 22:14:15,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9270 states. [2020-10-21 22:14:15,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9270 states to 9270 states and 41573 transitions. [2020-10-21 22:14:15,923 INFO L78 Accepts]: Start accepts. Automaton has 9270 states and 41573 transitions. Word has length 25 [2020-10-21 22:14:15,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:14:15,923 INFO L481 AbstractCegarLoop]: Abstraction has 9270 states and 41573 transitions. [2020-10-21 22:14:15,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 22:14:15,923 INFO L276 IsEmpty]: Start isEmpty. Operand 9270 states and 41573 transitions. [2020-10-21 22:14:15,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 22:14:15,926 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:14:15,926 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:14:15,926 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2020-10-21 22:14:15,926 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]=== [2020-10-21 22:14:15,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:14:15,926 INFO L82 PathProgramCache]: Analyzing trace with hash -1057128965, now seen corresponding path program 6 times [2020-10-21 22:14:15,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:14:15,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052093030] [2020-10-21 22:14:15,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:14:15,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:14:15,986 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-21 22:14:15,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052093030] [2020-10-21 22:14:15,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:14:15,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 22:14:15,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571328619] [2020-10-21 22:14:15,987 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 22:14:15,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:14:15,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 22:14:15,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 22:14:15,987 INFO L87 Difference]: Start difference. First operand 9270 states and 41573 transitions. Second operand 9 states. [2020-10-21 22:14:17,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:14:17,028 INFO L93 Difference]: Finished difference Result 30557 states and 118001 transitions. [2020-10-21 22:14:17,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:14:17,029 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-21 22:14:17,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:14:17,099 INFO L225 Difference]: With dead ends: 30557 [2020-10-21 22:14:17,100 INFO L226 Difference]: Without dead ends: 30524 [2020-10-21 22:14:17,100 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-21 22:14:17,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30524 states. [2020-10-21 22:14:17,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30524 to 9003. [2020-10-21 22:14:17,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9003 states. [2020-10-21 22:14:17,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9003 states to 9003 states and 40426 transitions. [2020-10-21 22:14:17,672 INFO L78 Accepts]: Start accepts. Automaton has 9003 states and 40426 transitions. Word has length 25 [2020-10-21 22:14:17,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:14:17,673 INFO L481 AbstractCegarLoop]: Abstraction has 9003 states and 40426 transitions. [2020-10-21 22:14:17,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 22:14:17,673 INFO L276 IsEmpty]: Start isEmpty. Operand 9003 states and 40426 transitions. [2020-10-21 22:14:17,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 22:14:17,675 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:14:17,676 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:14:17,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2020-10-21 22:14:17,676 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]=== [2020-10-21 22:14:17,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:14:17,676 INFO L82 PathProgramCache]: Analyzing trace with hash -1057108815, now seen corresponding path program 5 times [2020-10-21 22:14:17,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:14:17,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213505913] [2020-10-21 22:14:17,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:14:17,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:14:17,735 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-21 22:14:17,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213505913] [2020-10-21 22:14:17,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:14:17,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 22:14:17,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882749005] [2020-10-21 22:14:17,737 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 22:14:17,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:14:17,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 22:14:17,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 22:14:17,738 INFO L87 Difference]: Start difference. First operand 9003 states and 40426 transitions. Second operand 9 states. [2020-10-21 22:14:18,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:14:18,710 INFO L93 Difference]: Finished difference Result 30154 states and 116397 transitions. [2020-10-21 22:14:18,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:14:18,710 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-21 22:14:18,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:14:18,772 INFO L225 Difference]: With dead ends: 30154 [2020-10-21 22:14:18,773 INFO L226 Difference]: Without dead ends: 30128 [2020-10-21 22:14:18,773 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 [2020-10-21 22:14:18,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30128 states. [2020-10-21 22:14:19,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30128 to 8901. [2020-10-21 22:14:19,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8901 states. [2020-10-21 22:14:19,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8901 states to 8901 states and 39944 transitions. [2020-10-21 22:14:19,179 INFO L78 Accepts]: Start accepts. Automaton has 8901 states and 39944 transitions. Word has length 25 [2020-10-21 22:14:19,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:14:19,179 INFO L481 AbstractCegarLoop]: Abstraction has 8901 states and 39944 transitions. [2020-10-21 22:14:19,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 22:14:19,179 INFO L276 IsEmpty]: Start isEmpty. Operand 8901 states and 39944 transitions. [2020-10-21 22:14:19,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 22:14:19,182 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:14:19,182 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:14:19,182 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2020-10-21 22:14:19,182 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]=== [2020-10-21 22:14:19,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:14:19,183 INFO L82 PathProgramCache]: Analyzing trace with hash -1053924495, now seen corresponding path program 6 times [2020-10-21 22:14:19,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:14:19,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735877012] [2020-10-21 22:14:19,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:14:19,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:14:19,239 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-21 22:14:19,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735877012] [2020-10-21 22:14:19,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:14:19,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 22:14:19,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776551679] [2020-10-21 22:14:19,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 22:14:19,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:14:19,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 22:14:19,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 22:14:19,241 INFO L87 Difference]: Start difference. First operand 8901 states and 39944 transitions. Second operand 9 states. [2020-10-21 22:14:20,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:14:20,276 INFO L93 Difference]: Finished difference Result 29876 states and 115200 transitions. [2020-10-21 22:14:20,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:14:20,277 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-21 22:14:20,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:14:20,345 INFO L225 Difference]: With dead ends: 29876 [2020-10-21 22:14:20,346 INFO L226 Difference]: Without dead ends: 29843 [2020-10-21 22:14:20,346 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-21 22:14:20,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29843 states. [2020-10-21 22:14:20,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29843 to 8560. [2020-10-21 22:14:20,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8560 states. [2020-10-21 22:14:20,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8560 states to 8560 states and 38495 transitions. [2020-10-21 22:14:20,781 INFO L78 Accepts]: Start accepts. Automaton has 8560 states and 38495 transitions. Word has length 25 [2020-10-21 22:14:20,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:14:20,781 INFO L481 AbstractCegarLoop]: Abstraction has 8560 states and 38495 transitions. [2020-10-21 22:14:20,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 22:14:20,781 INFO L276 IsEmpty]: Start isEmpty. Operand 8560 states and 38495 transitions. [2020-10-21 22:14:20,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-21 22:14:20,785 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:14:20,785 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:14:20,785 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2020-10-21 22:14:20,785 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]=== [2020-10-21 22:14:20,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:14:20,785 INFO L82 PathProgramCache]: Analyzing trace with hash 150081278, now seen corresponding path program 1 times [2020-10-21 22:14:20,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:14:20,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102200045] [2020-10-21 22:14:20,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:14:20,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-21 22:14:20,793 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-21 22:14:20,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-21 22:14:20,799 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-21 22:14:20,806 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-21 22:14:20,806 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-21 22:14:20,807 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2020-10-21 22:14:20,807 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-21 22:14:20,807 WARN L371 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-21 22:14:20,808 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2020-10-21 22:14:20,822 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,823 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,823 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,823 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,823 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,823 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,823 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,824 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,824 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,824 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,824 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,824 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,824 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,824 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,825 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,825 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,825 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,825 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,825 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,825 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,825 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,825 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,826 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,826 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,826 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,826 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,826 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,826 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,826 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,827 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,827 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,827 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,827 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,827 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,827 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,827 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,828 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,828 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,828 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,828 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,828 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,828 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,828 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,829 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,829 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,829 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,829 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,829 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,829 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,829 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,829 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,830 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,830 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,830 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,830 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,830 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,830 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,830 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,831 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,831 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,831 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,831 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,831 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,831 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,831 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,831 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,832 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,832 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,832 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,832 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,832 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,832 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,832 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,833 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,833 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,833 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,833 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,833 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,833 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,833 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,834 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,834 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,834 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,834 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,834 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,834 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,834 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,835 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,835 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,835 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,835 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,835 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,835 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,835 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,835 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,836 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,836 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,836 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,836 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,836 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,836 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,836 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,836 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,837 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,837 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,837 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,837 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,837 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,837 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,837 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,838 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,838 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,838 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,838 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,838 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,838 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,838 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,838 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,839 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,839 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,839 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,839 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,839 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,839 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,839 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,839 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,840 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,840 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,840 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,840 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,840 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,849 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,849 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,849 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,850 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,850 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,851 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,851 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,851 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,851 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,851 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,853 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,853 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,853 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,853 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,853 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,854 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,854 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,854 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,855 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,855 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,856 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,856 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,856 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,856 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,856 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,857 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,858 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,858 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,858 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,858 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,858 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,858 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,858 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,859 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,860 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,860 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,860 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,860 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,860 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,860 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,860 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,861 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,861 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,861 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,862 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,862 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,862 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,862 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,862 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,871 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,871 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,871 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,871 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,871 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,871 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,872 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,872 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,875 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,876 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,876 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,876 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,876 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,876 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,876 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,877 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,880 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,880 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,880 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,881 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,881 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_reach_error_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,881 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,881 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,881 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_reach_error_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:14:20,882 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-21 22:14:20,882 INFO L253 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-10-21 22:14:20,883 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-21 22:14:20,883 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-21 22:14:20,883 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-21 22:14:20,883 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-21 22:14:20,883 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-21 22:14:20,883 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-21 22:14:20,883 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-21 22:14:20,883 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-21 22:14:20,885 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-21 22:14:20,885 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 184 places, 172 transitions, 464 flow [2020-10-21 22:14:20,885 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 184 places, 172 transitions, 464 flow [2020-10-21 22:14:20,886 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 184 places, 172 transitions, 464 flow [2020-10-21 22:14:20,906 INFO L129 PetriNetUnfolder]: 10/182 cut-off events. [2020-10-21 22:14:20,906 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-10-21 22:14:20,908 INFO L80 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 182 events. 10/182 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 320 event pairs, 0 based on Foata normal form. 0/164 useless extension candidates. Maximal degree in co-relation 217. Up to 14 conditions per place. [2020-10-21 22:14:20,915 INFO L116 LiptonReduction]: Number of co-enabled transitions 3372 [2020-10-21 22:14:23,783 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 63 [2020-10-21 22:14:24,234 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 96 [2020-10-21 22:14:24,390 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-21 22:14:24,407 INFO L131 LiptonReduction]: Checked pairs total: 5911 [2020-10-21 22:14:24,408 INFO L133 LiptonReduction]: Total number of compositions: 191 [2020-10-21 22:14:24,408 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 71 places, 45 transitions, 210 flow [2020-10-21 22:14:26,005 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 18584 states. [2020-10-21 22:14:26,006 INFO L276 IsEmpty]: Start isEmpty. Operand 18584 states. [2020-10-21 22:14:26,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-21 22:14:26,006 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:14:26,006 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-21 22:14:26,006 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]=== [2020-10-21 22:14:26,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:14:26,007 INFO L82 PathProgramCache]: Analyzing trace with hash 1689038, now seen corresponding path program 1 times [2020-10-21 22:14:26,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:14:26,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664073304] [2020-10-21 22:14:26,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:14:26,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:14:26,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:14:26,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664073304] [2020-10-21 22:14:26,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:14:26,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-21 22:14:26,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925373606] [2020-10-21 22:14:26,026 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 22:14:26,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:14:26,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 22:14:26,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 22:14:26,026 INFO L87 Difference]: Start difference. First operand 18584 states. Second operand 3 states. [2020-10-21 22:14:26,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:14:26,209 INFO L93 Difference]: Finished difference Result 17885 states and 92755 transitions. [2020-10-21 22:14:26,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 22:14:26,210 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-21 22:14:26,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:14:26,267 INFO L225 Difference]: With dead ends: 17885 [2020-10-21 22:14:26,267 INFO L226 Difference]: Without dead ends: 16791 [2020-10-21 22:14:26,267 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 [2020-10-21 22:14:26,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16791 states. [2020-10-21 22:14:26,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16791 to 16791. [2020-10-21 22:14:26,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16791 states. [2020-10-21 22:14:27,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16791 states to 16791 states and 86558 transitions. [2020-10-21 22:14:27,040 INFO L78 Accepts]: Start accepts. Automaton has 16791 states and 86558 transitions. Word has length 3 [2020-10-21 22:14:27,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:14:27,040 INFO L481 AbstractCegarLoop]: Abstraction has 16791 states and 86558 transitions. [2020-10-21 22:14:27,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 22:14:27,040 INFO L276 IsEmpty]: Start isEmpty. Operand 16791 states and 86558 transitions. [2020-10-21 22:14:27,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-21 22:14:27,041 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:14:27,041 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:14:27,041 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2020-10-21 22:14:27,041 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]=== [2020-10-21 22:14:27,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:14:27,042 INFO L82 PathProgramCache]: Analyzing trace with hash 1195163712, now seen corresponding path program 1 times [2020-10-21 22:14:27,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:14:27,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064682457] [2020-10-21 22:14:27,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:14:27,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:14:27,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:14:27,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064682457] [2020-10-21 22:14:27,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:14:27,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 22:14:27,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642287749] [2020-10-21 22:14:27,071 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 22:14:27,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:14:27,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 22:14:27,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 22:14:27,072 INFO L87 Difference]: Start difference. First operand 16791 states and 86558 transitions. Second operand 5 states. [2020-10-21 22:14:27,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:14:27,374 INFO L93 Difference]: Finished difference Result 30985 states and 150574 transitions. [2020-10-21 22:14:27,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 22:14:27,375 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-21 22:14:27,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:14:27,473 INFO L225 Difference]: With dead ends: 30985 [2020-10-21 22:14:27,474 INFO L226 Difference]: Without dead ends: 30977 [2020-10-21 22:14:27,474 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 [2020-10-21 22:14:27,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30977 states. [2020-10-21 22:14:30,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30977 to 19868. [2020-10-21 22:14:30,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19868 states. [2020-10-21 22:14:30,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19868 states to 19868 states and 103363 transitions. [2020-10-21 22:14:30,433 INFO L78 Accepts]: Start accepts. Automaton has 19868 states and 103363 transitions. Word has length 9 [2020-10-21 22:14:30,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:14:30,433 INFO L481 AbstractCegarLoop]: Abstraction has 19868 states and 103363 transitions. [2020-10-21 22:14:30,433 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 22:14:30,433 INFO L276 IsEmpty]: Start isEmpty. Operand 19868 states and 103363 transitions. [2020-10-21 22:14:30,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 22:14:30,434 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:14:30,434 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:14:30,434 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2020-10-21 22:14:30,434 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]=== [2020-10-21 22:14:30,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:14:30,435 INFO L82 PathProgramCache]: Analyzing trace with hash 749431237, now seen corresponding path program 1 times [2020-10-21 22:14:30,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:14:30,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024371328] [2020-10-21 22:14:30,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:14:30,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:14:30,462 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 22:14:30,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024371328] [2020-10-21 22:14:30,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:14:30,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 22:14:30,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704555918] [2020-10-21 22:14:30,463 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 22:14:30,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:14:30,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 22:14:30,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 22:14:30,463 INFO L87 Difference]: Start difference. First operand 19868 states and 103363 transitions. Second operand 5 states. [2020-10-21 22:14:30,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:14:30,745 INFO L93 Difference]: Finished difference Result 36296 states and 178836 transitions. [2020-10-21 22:14:30,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 22:14:30,746 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-21 22:14:30,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:14:30,848 INFO L225 Difference]: With dead ends: 36296 [2020-10-21 22:14:30,848 INFO L226 Difference]: Without dead ends: 36280 [2020-10-21 22:14:30,848 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 [2020-10-21 22:14:31,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36280 states. [2020-10-21 22:14:31,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36280 to 23806. [2020-10-21 22:14:31,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23806 states. [2020-10-21 22:14:31,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23806 states to 23806 states and 125455 transitions. [2020-10-21 22:14:31,976 INFO L78 Accepts]: Start accepts. Automaton has 23806 states and 125455 transitions. Word has length 13 [2020-10-21 22:14:31,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:14:31,976 INFO L481 AbstractCegarLoop]: Abstraction has 23806 states and 125455 transitions. [2020-10-21 22:14:31,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 22:14:31,976 INFO L276 IsEmpty]: Start isEmpty. Operand 23806 states and 125455 transitions. [2020-10-21 22:14:31,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-21 22:14:31,977 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:14:31,977 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:14:31,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2020-10-21 22:14:31,977 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]=== [2020-10-21 22:14:31,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:14:31,978 INFO L82 PathProgramCache]: Analyzing trace with hash -1975297452, now seen corresponding path program 1 times [2020-10-21 22:14:31,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:14:31,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719845478] [2020-10-21 22:14:31,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:14:31,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:14:32,028 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:14:32,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719845478] [2020-10-21 22:14:32,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267446364] [2020-10-21 22:14:32,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:14:32,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:14:32,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-21 22:14:32,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:14:32,189 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:14:32,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:14:32,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-21 22:14:32,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911361563] [2020-10-21 22:14:32,190 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-21 22:14:32,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:14:32,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-21 22:14:32,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-21 22:14:32,191 INFO L87 Difference]: Start difference. First operand 23806 states and 125455 transitions. Second operand 12 states. [2020-10-21 22:14:32,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:14:32,854 INFO L93 Difference]: Finished difference Result 56720 states and 262685 transitions. [2020-10-21 22:14:32,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 22:14:32,855 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-21 22:14:32,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:14:33,015 INFO L225 Difference]: With dead ends: 56720 [2020-10-21 22:14:33,015 INFO L226 Difference]: Without dead ends: 56704 [2020-10-21 22:14:33,015 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-21 22:14:33,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56704 states. [2020-10-21 22:14:36,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56704 to 23629. [2020-10-21 22:14:36,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23629 states. [2020-10-21 22:14:36,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23629 states to 23629 states and 124418 transitions. [2020-10-21 22:14:36,711 INFO L78 Accepts]: Start accepts. Automaton has 23629 states and 124418 transitions. Word has length 15 [2020-10-21 22:14:36,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:14:36,711 INFO L481 AbstractCegarLoop]: Abstraction has 23629 states and 124418 transitions. [2020-10-21 22:14:36,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-21 22:14:36,711 INFO L276 IsEmpty]: Start isEmpty. Operand 23629 states and 124418 transitions. [2020-10-21 22:14:36,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-21 22:14:36,711 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:14:36,711 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:14:36,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2020-10-21 22:14:36,912 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]=== [2020-10-21 22:14:36,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:14:36,913 INFO L82 PathProgramCache]: Analyzing trace with hash -1351073514, now seen corresponding path program 2 times [2020-10-21 22:14:36,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:14:36,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929720074] [2020-10-21 22:14:36,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:14:36,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:14:36,959 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 22:14:36,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929720074] [2020-10-21 22:14:36,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:14:36,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 22:14:36,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120250327] [2020-10-21 22:14:36,961 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 22:14:36,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:14:36,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 22:14:36,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 22:14:36,961 INFO L87 Difference]: Start difference. First operand 23629 states and 124418 transitions. Second operand 7 states. [2020-10-21 22:14:37,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:14:37,581 INFO L93 Difference]: Finished difference Result 58078 states and 269185 transitions. [2020-10-21 22:14:37,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 22:14:37,582 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-21 22:14:37,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:14:37,756 INFO L225 Difference]: With dead ends: 58078 [2020-10-21 22:14:37,756 INFO L226 Difference]: Without dead ends: 58061 [2020-10-21 22:14:37,756 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 [2020-10-21 22:14:38,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58061 states. [2020-10-21 22:14:39,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58061 to 23109. [2020-10-21 22:14:39,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23109 states. [2020-10-21 22:14:39,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23109 states to 23109 states and 121651 transitions. [2020-10-21 22:14:39,207 INFO L78 Accepts]: Start accepts. Automaton has 23109 states and 121651 transitions. Word has length 15 [2020-10-21 22:14:39,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:14:39,207 INFO L481 AbstractCegarLoop]: Abstraction has 23109 states and 121651 transitions. [2020-10-21 22:14:39,207 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 22:14:39,207 INFO L276 IsEmpty]: Start isEmpty. Operand 23109 states and 121651 transitions. [2020-10-21 22:14:39,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-21 22:14:39,208 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:14:39,208 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:14:39,208 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2020-10-21 22:14:39,208 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]=== [2020-10-21 22:14:39,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:14:39,208 INFO L82 PathProgramCache]: Analyzing trace with hash 1256878032, now seen corresponding path program 1 times [2020-10-21 22:14:39,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:14:39,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113409345] [2020-10-21 22:14:39,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:14:39,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:14:39,238 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 22:14:39,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113409345] [2020-10-21 22:14:39,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:14:39,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 22:14:39,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011728924] [2020-10-21 22:14:39,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 22:14:39,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:14:39,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 22:14:39,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 22:14:39,241 INFO L87 Difference]: Start difference. First operand 23109 states and 121651 transitions. Second operand 5 states. [2020-10-21 22:14:39,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:14:39,573 INFO L93 Difference]: Finished difference Result 41885 states and 209629 transitions. [2020-10-21 22:14:39,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 22:14:39,574 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-21 22:14:39,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:14:39,701 INFO L225 Difference]: With dead ends: 41885 [2020-10-21 22:14:39,701 INFO L226 Difference]: Without dead ends: 41856 [2020-10-21 22:14:39,702 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 [2020-10-21 22:14:40,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41856 states. [2020-10-21 22:14:41,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41856 to 28237. [2020-10-21 22:14:41,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28237 states. [2020-10-21 22:14:41,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28237 states to 28237 states and 150261 transitions. [2020-10-21 22:14:41,675 INFO L78 Accepts]: Start accepts. Automaton has 28237 states and 150261 transitions. Word has length 17 [2020-10-21 22:14:41,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:14:41,675 INFO L481 AbstractCegarLoop]: Abstraction has 28237 states and 150261 transitions. [2020-10-21 22:14:41,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 22:14:41,676 INFO L276 IsEmpty]: Start isEmpty. Operand 28237 states and 150261 transitions. [2020-10-21 22:14:41,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-21 22:14:41,676 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:14:41,676 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:14:41,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2020-10-21 22:14:41,677 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]=== [2020-10-21 22:14:41,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:14:41,677 INFO L82 PathProgramCache]: Analyzing trace with hash 1122599135, now seen corresponding path program 1 times [2020-10-21 22:14:41,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:14:41,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196409568] [2020-10-21 22:14:41,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:14:41,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:14:41,719 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:14:41,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196409568] [2020-10-21 22:14:41,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351322094] [2020-10-21 22:14:41,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:14:41,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:14:41,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-21 22:14:41,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:14:41,888 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:14:41,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:14:41,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-21 22:14:41,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330630514] [2020-10-21 22:14:41,889 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-21 22:14:41,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:14:41,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-21 22:14:41,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-21 22:14:41,890 INFO L87 Difference]: Start difference. First operand 28237 states and 150261 transitions. Second operand 12 states. [2020-10-21 22:14:42,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:14:42,654 INFO L93 Difference]: Finished difference Result 66831 states and 314874 transitions. [2020-10-21 22:14:42,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 22:14:42,654 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-10-21 22:14:42,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:14:42,848 INFO L225 Difference]: With dead ends: 66831 [2020-10-21 22:14:42,849 INFO L226 Difference]: Without dead ends: 66807 [2020-10-21 22:14:42,849 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-21 22:14:43,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66807 states. [2020-10-21 22:14:44,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66807 to 28673. [2020-10-21 22:14:44,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28673 states. [2020-10-21 22:14:47,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28673 states to 28673 states and 152375 transitions. [2020-10-21 22:14:47,650 INFO L78 Accepts]: Start accepts. Automaton has 28673 states and 152375 transitions. Word has length 19 [2020-10-21 22:14:47,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:14:47,651 INFO L481 AbstractCegarLoop]: Abstraction has 28673 states and 152375 transitions. [2020-10-21 22:14:47,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-21 22:14:47,651 INFO L276 IsEmpty]: Start isEmpty. Operand 28673 states and 152375 transitions. [2020-10-21 22:14:47,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-21 22:14:47,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:14:47,652 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:14:47,864 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable81 [2020-10-21 22:14:47,865 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]=== [2020-10-21 22:14:47,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:14:47,865 INFO L82 PathProgramCache]: Analyzing trace with hash -30740687, now seen corresponding path program 1 times [2020-10-21 22:14:47,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:14:47,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391154975] [2020-10-21 22:14:47,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:14:47,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:14:47,912 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:14:47,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391154975] [2020-10-21 22:14:47,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367758905] [2020-10-21 22:14:47,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:14:48,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:14:48,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-21 22:14:48,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:14:48,082 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:14:48,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:14:48,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-21 22:14:48,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022465501] [2020-10-21 22:14:48,084 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-21 22:14:48,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:14:48,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-21 22:14:48,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-21 22:14:48,084 INFO L87 Difference]: Start difference. First operand 28673 states and 152375 transitions. Second operand 12 states. [2020-10-21 22:14:48,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:14:48,812 INFO L93 Difference]: Finished difference Result 69484 states and 328264 transitions. [2020-10-21 22:14:48,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 22:14:48,813 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-10-21 22:14:48,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:14:49,022 INFO L225 Difference]: With dead ends: 69484 [2020-10-21 22:14:49,023 INFO L226 Difference]: Without dead ends: 69451 [2020-10-21 22:14:49,023 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-21 22:14:49,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69451 states. [2020-10-21 22:14:50,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69451 to 28873. [2020-10-21 22:14:50,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28873 states. [2020-10-21 22:14:50,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28873 states to 28873 states and 153454 transitions. [2020-10-21 22:14:50,753 INFO L78 Accepts]: Start accepts. Automaton has 28873 states and 153454 transitions. Word has length 19 [2020-10-21 22:14:50,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:14:50,753 INFO L481 AbstractCegarLoop]: Abstraction has 28873 states and 153454 transitions. [2020-10-21 22:14:50,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-21 22:14:50,753 INFO L276 IsEmpty]: Start isEmpty. Operand 28873 states and 153454 transitions. [2020-10-21 22:14:50,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-21 22:14:50,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:14:50,754 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:14:50,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,22 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:14:50,955 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]=== [2020-10-21 22:14:50,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:14:50,956 INFO L82 PathProgramCache]: Analyzing trace with hash 973992033, now seen corresponding path program 2 times [2020-10-21 22:14:50,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:14:50,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055087740] [2020-10-21 22:14:50,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:14:50,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:14:51,014 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 22:14:51,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055087740] [2020-10-21 22:14:51,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:14:51,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 22:14:51,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048787909] [2020-10-21 22:14:51,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 22:14:51,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:14:51,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 22:14:51,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 22:14:51,016 INFO L87 Difference]: Start difference. First operand 28873 states and 153454 transitions. Second operand 7 states. [2020-10-21 22:14:51,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:14:51,706 INFO L93 Difference]: Finished difference Result 70510 states and 333491 transitions. [2020-10-21 22:14:51,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 22:14:51,707 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-21 22:14:51,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:14:51,921 INFO L225 Difference]: With dead ends: 70510 [2020-10-21 22:14:51,921 INFO L226 Difference]: Without dead ends: 70477 [2020-10-21 22:14:51,922 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 [2020-10-21 22:14:53,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70477 states. [2020-10-21 22:14:54,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70477 to 28942. [2020-10-21 22:14:54,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28942 states. [2020-10-21 22:14:54,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28942 states to 28942 states and 153921 transitions. [2020-10-21 22:14:54,161 INFO L78 Accepts]: Start accepts. Automaton has 28942 states and 153921 transitions. Word has length 19 [2020-10-21 22:14:54,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:14:54,161 INFO L481 AbstractCegarLoop]: Abstraction has 28942 states and 153921 transitions. [2020-10-21 22:14:54,161 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 22:14:54,162 INFO L276 IsEmpty]: Start isEmpty. Operand 28942 states and 153921 transitions. [2020-10-21 22:14:54,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-21 22:14:54,162 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:14:54,162 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:14:54,162 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2020-10-21 22:14:54,163 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]=== [2020-10-21 22:14:54,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:14:54,163 INFO L82 PathProgramCache]: Analyzing trace with hash 973976719, now seen corresponding path program 2 times [2020-10-21 22:14:54,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:14:54,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492266161] [2020-10-21 22:14:54,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:14:54,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:14:54,207 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 22:14:54,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492266161] [2020-10-21 22:14:54,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:14:54,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 22:14:54,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053312273] [2020-10-21 22:14:54,209 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 22:14:54,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:14:54,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 22:14:54,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 22:14:54,209 INFO L87 Difference]: Start difference. First operand 28942 states and 153921 transitions. Second operand 7 states. [2020-10-21 22:14:54,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:14:54,897 INFO L93 Difference]: Finished difference Result 70096 states and 331298 transitions. [2020-10-21 22:14:54,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 22:14:54,898 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-21 22:14:54,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:14:55,109 INFO L225 Difference]: With dead ends: 70096 [2020-10-21 22:14:55,110 INFO L226 Difference]: Without dead ends: 70063 [2020-10-21 22:14:55,110 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 [2020-10-21 22:14:55,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70063 states. [2020-10-21 22:14:57,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70063 to 29094. [2020-10-21 22:14:57,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29094 states. [2020-10-21 22:14:57,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29094 states to 29094 states and 154883 transitions. [2020-10-21 22:14:57,356 INFO L78 Accepts]: Start accepts. Automaton has 29094 states and 154883 transitions. Word has length 19 [2020-10-21 22:14:57,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:14:57,356 INFO L481 AbstractCegarLoop]: Abstraction has 29094 states and 154883 transitions. [2020-10-21 22:14:57,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 22:14:57,356 INFO L276 IsEmpty]: Start isEmpty. Operand 29094 states and 154883 transitions. [2020-10-21 22:14:57,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 22:14:57,357 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:14:57,357 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:14:57,357 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2020-10-21 22:14:57,357 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]=== [2020-10-21 22:14:57,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:14:57,358 INFO L82 PathProgramCache]: Analyzing trace with hash -223741824, now seen corresponding path program 1 times [2020-10-21 22:14:57,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:14:57,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297761726] [2020-10-21 22:14:57,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:14:57,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:14:57,424 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:14:57,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297761726] [2020-10-21 22:14:57,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469943880] [2020-10-21 22:14:57,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:14:57,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:14:57,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 22:14:57,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:14:57,631 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:14:57,631 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:14:57,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-21 22:14:57,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722137406] [2020-10-21 22:14:57,632 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-21 22:14:57,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:14:57,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-21 22:14:57,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-21 22:14:57,633 INFO L87 Difference]: Start difference. First operand 29094 states and 154883 transitions. Second operand 16 states. [2020-10-21 22:14:59,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:14:59,202 INFO L93 Difference]: Finished difference Result 100731 states and 448596 transitions. [2020-10-21 22:14:59,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:14:59,203 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-21 22:14:59,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:14:59,498 INFO L225 Difference]: With dead ends: 100731 [2020-10-21 22:14:59,498 INFO L226 Difference]: Without dead ends: 100715 [2020-10-21 22:14:59,498 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-21 22:15:00,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100715 states. [2020-10-21 22:15:02,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100715 to 28719. [2020-10-21 22:15:02,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28719 states. [2020-10-21 22:15:02,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28719 states to 28719 states and 152760 transitions. [2020-10-21 22:15:02,304 INFO L78 Accepts]: Start accepts. Automaton has 28719 states and 152760 transitions. Word has length 21 [2020-10-21 22:15:02,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:15:02,304 INFO L481 AbstractCegarLoop]: Abstraction has 28719 states and 152760 transitions. [2020-10-21 22:15:02,304 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-21 22:15:02,304 INFO L276 IsEmpty]: Start isEmpty. Operand 28719 states and 152760 transitions. [2020-10-21 22:15:02,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 22:15:02,305 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:15:02,305 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:15:02,506 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:15:02,506 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]=== [2020-10-21 22:15:02,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:15:02,507 INFO L82 PathProgramCache]: Analyzing trace with hash 780975582, now seen corresponding path program 2 times [2020-10-21 22:15:02,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:15:02,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93743456] [2020-10-21 22:15:02,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:15:02,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:15:02,573 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:15:02,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93743456] [2020-10-21 22:15:02,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993237706] [2020-10-21 22:15:02,574 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-21 22:15:02,667 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 22:15:02,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 22:15:02,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 22:15:02,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:15:02,787 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:15:02,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:15:02,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-21 22:15:02,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946035578] [2020-10-21 22:15:02,788 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-21 22:15:02,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:15:02,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-21 22:15:02,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-21 22:15:02,789 INFO L87 Difference]: Start difference. First operand 28719 states and 152760 transitions. Second operand 16 states. [2020-10-21 22:15:04,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:15:04,330 INFO L93 Difference]: Finished difference Result 99876 states and 444348 transitions. [2020-10-21 22:15:04,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:15:04,331 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-21 22:15:04,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:15:04,621 INFO L225 Difference]: With dead ends: 99876 [2020-10-21 22:15:04,622 INFO L226 Difference]: Without dead ends: 99855 [2020-10-21 22:15:04,622 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-21 22:15:06,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99855 states. [2020-10-21 22:15:07,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99855 to 28343. [2020-10-21 22:15:07,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28343 states. [2020-10-21 22:15:07,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28343 states to 28343 states and 150639 transitions. [2020-10-21 22:15:07,304 INFO L78 Accepts]: Start accepts. Automaton has 28343 states and 150639 transitions. Word has length 21 [2020-10-21 22:15:07,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:15:07,305 INFO L481 AbstractCegarLoop]: Abstraction has 28343 states and 150639 transitions. [2020-10-21 22:15:07,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-21 22:15:07,305 INFO L276 IsEmpty]: Start isEmpty. Operand 28343 states and 150639 transitions. [2020-10-21 22:15:07,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 22:15:07,306 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:15:07,306 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:15:07,507 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable86 [2020-10-21 22:15:07,508 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]=== [2020-10-21 22:15:07,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:15:07,508 INFO L82 PathProgramCache]: Analyzing trace with hash -141594176, now seen corresponding path program 3 times [2020-10-21 22:15:07,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:15:07,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361607417] [2020-10-21 22:15:07,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:15:07,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:15:07,573 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:15:07,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361607417] [2020-10-21 22:15:07,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844586959] [2020-10-21 22:15:07,574 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-21 22:15:07,674 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-21 22:15:07,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 22:15:07,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 22:15:07,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:15:07,788 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:15:07,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:15:07,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-21 22:15:07,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245273691] [2020-10-21 22:15:07,789 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-21 22:15:07,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:15:07,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-21 22:15:07,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-21 22:15:07,790 INFO L87 Difference]: Start difference. First operand 28343 states and 150639 transitions. Second operand 16 states. [2020-10-21 22:15:09,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:15:09,364 INFO L93 Difference]: Finished difference Result 100071 states and 445291 transitions. [2020-10-21 22:15:09,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:15:09,364 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-21 22:15:09,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:15:10,261 INFO L225 Difference]: With dead ends: 100071 [2020-10-21 22:15:10,261 INFO L226 Difference]: Without dead ends: 100055 [2020-10-21 22:15:10,262 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-21 22:15:11,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100055 states. [2020-10-21 22:15:12,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100055 to 27654. [2020-10-21 22:15:12,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27654 states. [2020-10-21 22:15:12,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27654 states to 27654 states and 147080 transitions. [2020-10-21 22:15:12,319 INFO L78 Accepts]: Start accepts. Automaton has 27654 states and 147080 transitions. Word has length 21 [2020-10-21 22:15:12,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:15:12,319 INFO L481 AbstractCegarLoop]: Abstraction has 27654 states and 147080 transitions. [2020-10-21 22:15:12,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-21 22:15:12,320 INFO L276 IsEmpty]: Start isEmpty. Operand 27654 states and 147080 transitions. [2020-10-21 22:15:12,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 22:15:12,322 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:15:12,322 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:15:12,522 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:15:12,523 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]=== [2020-10-21 22:15:12,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:15:12,523 INFO L82 PathProgramCache]: Analyzing trace with hash 522984322, now seen corresponding path program 4 times [2020-10-21 22:15:12,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:15:12,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126154108] [2020-10-21 22:15:12,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:15:12,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:15:12,594 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:15:12,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126154108] [2020-10-21 22:15:12,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431101472] [2020-10-21 22:15:12,594 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-21 22:15:12,687 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-21 22:15:12,687 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 22:15:12,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 22:15:12,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:15:12,802 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:15:12,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:15:12,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-21 22:15:12,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39949381] [2020-10-21 22:15:12,803 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-21 22:15:12,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:15:12,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-21 22:15:12,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-21 22:15:12,804 INFO L87 Difference]: Start difference. First operand 27654 states and 147080 transitions. Second operand 16 states. [2020-10-21 22:15:14,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:15:14,737 INFO L93 Difference]: Finished difference Result 99523 states and 442763 transitions. [2020-10-21 22:15:14,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:15:14,738 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-21 22:15:14,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:15:15,041 INFO L225 Difference]: With dead ends: 99523 [2020-10-21 22:15:15,041 INFO L226 Difference]: Without dead ends: 99502 [2020-10-21 22:15:15,042 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-21 22:15:15,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99502 states. [2020-10-21 22:15:17,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99502 to 27278. [2020-10-21 22:15:17,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27278 states. [2020-10-21 22:15:17,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27278 states to 27278 states and 144959 transitions. [2020-10-21 22:15:17,161 INFO L78 Accepts]: Start accepts. Automaton has 27278 states and 144959 transitions. Word has length 21 [2020-10-21 22:15:17,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:15:17,162 INFO L481 AbstractCegarLoop]: Abstraction has 27278 states and 144959 transitions. [2020-10-21 22:15:17,162 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-21 22:15:17,162 INFO L276 IsEmpty]: Start isEmpty. Operand 27278 states and 144959 transitions. [2020-10-21 22:15:17,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 22:15:17,163 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:15:17,163 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:15:17,363 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2020-10-21 22:15:17,364 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]=== [2020-10-21 22:15:17,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:15:17,364 INFO L82 PathProgramCache]: Analyzing trace with hash -456681683, now seen corresponding path program 1 times [2020-10-21 22:15:17,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:15:17,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781980165] [2020-10-21 22:15:17,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:15:17,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:15:17,396 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-21 22:15:17,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781980165] [2020-10-21 22:15:17,396 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:15:17,397 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 22:15:17,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791735619] [2020-10-21 22:15:17,397 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 22:15:17,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:15:17,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 22:15:17,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 22:15:17,398 INFO L87 Difference]: Start difference. First operand 27278 states and 144959 transitions. Second operand 5 states. [2020-10-21 22:15:18,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:15:18,049 INFO L93 Difference]: Finished difference Result 48996 states and 248701 transitions. [2020-10-21 22:15:18,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 22:15:18,050 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-21 22:15:18,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:15:18,202 INFO L225 Difference]: With dead ends: 48996 [2020-10-21 22:15:18,202 INFO L226 Difference]: Without dead ends: 48950 [2020-10-21 22:15:18,202 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 [2020-10-21 22:15:18,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48950 states. [2020-10-21 22:15:19,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48950 to 33977. [2020-10-21 22:15:19,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33977 states. [2020-10-21 22:15:19,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33977 states to 33977 states and 181757 transitions. [2020-10-21 22:15:19,687 INFO L78 Accepts]: Start accepts. Automaton has 33977 states and 181757 transitions. Word has length 21 [2020-10-21 22:15:19,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:15:19,687 INFO L481 AbstractCegarLoop]: Abstraction has 33977 states and 181757 transitions. [2020-10-21 22:15:19,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 22:15:19,687 INFO L276 IsEmpty]: Start isEmpty. Operand 33977 states and 181757 transitions. [2020-10-21 22:15:19,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 22:15:19,688 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:15:19,688 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:15:19,688 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2020-10-21 22:15:19,688 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]=== [2020-10-21 22:15:19,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:15:19,689 INFO L82 PathProgramCache]: Analyzing trace with hash -296528672, now seen corresponding path program 5 times [2020-10-21 22:15:19,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:15:19,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322003505] [2020-10-21 22:15:19,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:15:19,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:15:19,763 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 22:15:19,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322003505] [2020-10-21 22:15:19,764 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:15:19,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 22:15:19,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024449548] [2020-10-21 22:15:19,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 22:15:19,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:15:19,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 22:15:19,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 22:15:19,765 INFO L87 Difference]: Start difference. First operand 33977 states and 181757 transitions. Second operand 9 states. [2020-10-21 22:15:21,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:15:21,837 INFO L93 Difference]: Finished difference Result 115584 states and 523727 transitions. [2020-10-21 22:15:21,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:15:21,838 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-21 22:15:21,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:15:22,198 INFO L225 Difference]: With dead ends: 115584 [2020-10-21 22:15:22,198 INFO L226 Difference]: Without dead ends: 115559 [2020-10-21 22:15:22,199 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-21 22:15:23,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115559 states. [2020-10-21 22:15:24,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115559 to 33074. [2020-10-21 22:15:24,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33074 states. [2020-10-21 22:15:24,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33074 states to 33074 states and 176935 transitions. [2020-10-21 22:15:24,728 INFO L78 Accepts]: Start accepts. Automaton has 33074 states and 176935 transitions. Word has length 21 [2020-10-21 22:15:24,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:15:24,728 INFO L481 AbstractCegarLoop]: Abstraction has 33074 states and 176935 transitions. [2020-10-21 22:15:24,728 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 22:15:24,728 INFO L276 IsEmpty]: Start isEmpty. Operand 33074 states and 176935 transitions. [2020-10-21 22:15:24,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 22:15:24,729 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:15:24,729 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:15:24,729 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2020-10-21 22:15:24,730 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]=== [2020-10-21 22:15:24,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:15:24,730 INFO L82 PathProgramCache]: Analyzing trace with hash -311230112, now seen corresponding path program 6 times [2020-10-21 22:15:24,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:15:24,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736893200] [2020-10-21 22:15:24,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:15:24,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:15:24,803 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-21 22:15:24,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736893200] [2020-10-21 22:15:24,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:15:24,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-21 22:15:24,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819640603] [2020-10-21 22:15:24,804 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 22:15:24,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:15:24,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 22:15:24,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-21 22:15:24,805 INFO L87 Difference]: Start difference. First operand 33074 states and 176935 transitions. Second operand 9 states. [2020-10-21 22:15:25,604 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-10-21 22:15:26,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:15:26,549 INFO L93 Difference]: Finished difference Result 114402 states and 517732 transitions. [2020-10-21 22:15:26,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:15:26,551 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-21 22:15:26,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:15:26,890 INFO L225 Difference]: With dead ends: 114402 [2020-10-21 22:15:26,890 INFO L226 Difference]: Without dead ends: 114371 [2020-10-21 22:15:26,891 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-21 22:15:28,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114371 states. [2020-10-21 22:15:29,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114371 to 31960. [2020-10-21 22:15:29,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31960 states. [2020-10-21 22:15:30,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31960 states to 31960 states and 171209 transitions. [2020-10-21 22:15:30,072 INFO L78 Accepts]: Start accepts. Automaton has 31960 states and 171209 transitions. Word has length 21 [2020-10-21 22:15:30,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:15:30,072 INFO L481 AbstractCegarLoop]: Abstraction has 31960 states and 171209 transitions. [2020-10-21 22:15:30,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 22:15:30,072 INFO L276 IsEmpty]: Start isEmpty. Operand 31960 states and 171209 transitions. [2020-10-21 22:15:30,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-21 22:15:30,073 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:15:30,073 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:15:30,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2020-10-21 22:15:30,074 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]=== [2020-10-21 22:15:30,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:15:30,074 INFO L82 PathProgramCache]: Analyzing trace with hash -1247180612, now seen corresponding path program 1 times [2020-10-21 22:15:30,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:15:30,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148076469] [2020-10-21 22:15:30,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:15:30,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:15:30,129 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-21 22:15:30,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148076469] [2020-10-21 22:15:30,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482900388] [2020-10-21 22:15:30,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:15:30,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:15:30,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-21 22:15:30,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:15:30,295 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-21 22:15:30,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:15:30,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-21 22:15:30,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288245248] [2020-10-21 22:15:30,296 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-21 22:15:30,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:15:30,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-21 22:15:30,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-21 22:15:30,297 INFO L87 Difference]: Start difference. First operand 31960 states and 171209 transitions. Second operand 12 states. [2020-10-21 22:15:31,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:15:31,118 INFO L93 Difference]: Finished difference Result 75380 states and 361389 transitions. [2020-10-21 22:15:31,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 22:15:31,119 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-10-21 22:15:31,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:15:31,348 INFO L225 Difference]: With dead ends: 75380 [2020-10-21 22:15:31,349 INFO L226 Difference]: Without dead ends: 75344 [2020-10-21 22:15:31,349 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-21 22:15:32,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75344 states. [2020-10-21 22:15:33,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75344 to 32974. [2020-10-21 22:15:33,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32974 states. [2020-10-21 22:15:33,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32974 states to 32974 states and 176363 transitions. [2020-10-21 22:15:33,906 INFO L78 Accepts]: Start accepts. Automaton has 32974 states and 176363 transitions. Word has length 23 [2020-10-21 22:15:33,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:15:33,906 INFO L481 AbstractCegarLoop]: Abstraction has 32974 states and 176363 transitions. [2020-10-21 22:15:33,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-21 22:15:33,906 INFO L276 IsEmpty]: Start isEmpty. Operand 32974 states and 176363 transitions. [2020-10-21 22:15:33,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-21 22:15:33,908 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:15:33,908 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:15:34,108 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:15:34,109 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]=== [2020-10-21 22:15:34,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:15:34,110 INFO L82 PathProgramCache]: Analyzing trace with hash -83395058, now seen corresponding path program 1 times [2020-10-21 22:15:34,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:15:34,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065139990] [2020-10-21 22:15:34,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:15:34,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:15:34,159 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-21 22:15:34,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065139990] [2020-10-21 22:15:34,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092163078] [2020-10-21 22:15:34,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:15:34,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:15:34,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-21 22:15:34,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:15:34,321 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-21 22:15:34,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:15:34,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-21 22:15:34,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075717041] [2020-10-21 22:15:34,323 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-21 22:15:34,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:15:34,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-21 22:15:34,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-21 22:15:34,324 INFO L87 Difference]: Start difference. First operand 32974 states and 176363 transitions. Second operand 12 states. [2020-10-21 22:15:35,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:15:35,095 INFO L93 Difference]: Finished difference Result 79487 states and 381757 transitions. [2020-10-21 22:15:35,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 22:15:35,095 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-10-21 22:15:35,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:15:35,341 INFO L225 Difference]: With dead ends: 79487 [2020-10-21 22:15:35,341 INFO L226 Difference]: Without dead ends: 79445 [2020-10-21 22:15:35,341 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-21 22:15:36,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79445 states. [2020-10-21 22:15:37,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79445 to 33981. [2020-10-21 22:15:37,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33981 states. [2020-10-21 22:15:37,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33981 states to 33981 states and 181710 transitions. [2020-10-21 22:15:37,907 INFO L78 Accepts]: Start accepts. Automaton has 33981 states and 181710 transitions. Word has length 23 [2020-10-21 22:15:37,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:15:37,908 INFO L481 AbstractCegarLoop]: Abstraction has 33981 states and 181710 transitions. [2020-10-21 22:15:37,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-21 22:15:37,908 INFO L276 IsEmpty]: Start isEmpty. Operand 33981 states and 181710 transitions. [2020-10-21 22:15:37,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-21 22:15:37,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:15:37,910 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:15:38,119 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,28 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:15:38,120 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]=== [2020-10-21 22:15:38,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:15:38,120 INFO L82 PathProgramCache]: Analyzing trace with hash 859803225, now seen corresponding path program 1 times [2020-10-21 22:15:38,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:15:38,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986721865] [2020-10-21 22:15:38,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:15:38,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:15:38,169 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-21 22:15:38,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986721865] [2020-10-21 22:15:38,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384742482] [2020-10-21 22:15:38,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:15:38,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:15:38,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-21 22:15:38,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:15:38,380 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-21 22:15:38,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:15:38,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-21 22:15:38,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528862170] [2020-10-21 22:15:38,381 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-21 22:15:38,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:15:38,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-21 22:15:38,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-21 22:15:38,381 INFO L87 Difference]: Start difference. First operand 33981 states and 181710 transitions. Second operand 12 states. [2020-10-21 22:15:39,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:15:39,271 INFO L93 Difference]: Finished difference Result 82728 states and 398553 transitions. [2020-10-21 22:15:39,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 22:15:39,272 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-10-21 22:15:39,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:15:39,551 INFO L225 Difference]: With dead ends: 82728 [2020-10-21 22:15:39,551 INFO L226 Difference]: Without dead ends: 82673 [2020-10-21 22:15:39,551 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-21 22:15:40,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82673 states. [2020-10-21 22:15:42,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82673 to 34821. [2020-10-21 22:15:42,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34821 states. [2020-10-21 22:15:42,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34821 states to 34821 states and 186422 transitions. [2020-10-21 22:15:42,203 INFO L78 Accepts]: Start accepts. Automaton has 34821 states and 186422 transitions. Word has length 23 [2020-10-21 22:15:42,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:15:42,203 INFO L481 AbstractCegarLoop]: Abstraction has 34821 states and 186422 transitions. [2020-10-21 22:15:42,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-21 22:15:42,203 INFO L276 IsEmpty]: Start isEmpty. Operand 34821 states and 186422 transitions. [2020-10-21 22:15:42,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-21 22:15:42,205 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:15:42,205 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:15:42,405 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:15:42,406 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]=== [2020-10-21 22:15:42,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:15:42,406 INFO L82 PathProgramCache]: Analyzing trace with hash -784422783, now seen corresponding path program 2 times [2020-10-21 22:15:42,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:15:42,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316433864] [2020-10-21 22:15:42,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:15:42,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:15:42,455 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-21 22:15:42,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316433864] [2020-10-21 22:15:42,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:15:42,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 22:15:42,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780595919] [2020-10-21 22:15:42,455 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 22:15:42,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:15:42,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 22:15:42,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 22:15:42,456 INFO L87 Difference]: Start difference. First operand 34821 states and 186422 transitions. Second operand 7 states. [2020-10-21 22:15:43,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:15:43,257 INFO L93 Difference]: Finished difference Result 83487 states and 402661 transitions. [2020-10-21 22:15:43,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 22:15:43,258 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-21 22:15:43,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:15:43,518 INFO L225 Difference]: With dead ends: 83487 [2020-10-21 22:15:43,518 INFO L226 Difference]: Without dead ends: 83432 [2020-10-21 22:15:43,519 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 [2020-10-21 22:15:44,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83432 states. [2020-10-21 22:15:46,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83432 to 35694. [2020-10-21 22:15:46,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35694 states. [2020-10-21 22:15:46,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35694 states to 35694 states and 191145 transitions. [2020-10-21 22:15:46,296 INFO L78 Accepts]: Start accepts. Automaton has 35694 states and 191145 transitions. Word has length 23 [2020-10-21 22:15:46,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:15:46,297 INFO L481 AbstractCegarLoop]: Abstraction has 35694 states and 191145 transitions. [2020-10-21 22:15:46,297 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 22:15:46,297 INFO L276 IsEmpty]: Start isEmpty. Operand 35694 states and 191145 transitions. [2020-10-21 22:15:46,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-21 22:15:46,299 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:15:46,299 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:15:46,299 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2020-10-21 22:15:46,299 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]=== [2020-10-21 22:15:46,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:15:46,300 INFO L82 PathProgramCache]: Analyzing trace with hash -784419714, now seen corresponding path program 2 times [2020-10-21 22:15:46,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:15:46,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440739910] [2020-10-21 22:15:46,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:15:46,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:15:46,346 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-21 22:15:46,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440739910] [2020-10-21 22:15:46,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:15:46,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 22:15:46,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826043631] [2020-10-21 22:15:46,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 22:15:46,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:15:46,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 22:15:46,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 22:15:46,349 INFO L87 Difference]: Start difference. First operand 35694 states and 191145 transitions. Second operand 7 states. [2020-10-21 22:15:47,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:15:47,132 INFO L93 Difference]: Finished difference Result 83543 states and 402494 transitions. [2020-10-21 22:15:47,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 22:15:47,133 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-21 22:15:47,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:15:47,393 INFO L225 Difference]: With dead ends: 83543 [2020-10-21 22:15:47,393 INFO L226 Difference]: Without dead ends: 83488 [2020-10-21 22:15:47,394 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 [2020-10-21 22:15:48,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83488 states. [2020-10-21 22:15:49,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83488 to 36306. [2020-10-21 22:15:49,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36306 states. [2020-10-21 22:15:50,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36306 states to 36306 states and 194552 transitions. [2020-10-21 22:15:50,129 INFO L78 Accepts]: Start accepts. Automaton has 36306 states and 194552 transitions. Word has length 23 [2020-10-21 22:15:50,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:15:50,129 INFO L481 AbstractCegarLoop]: Abstraction has 36306 states and 194552 transitions. [2020-10-21 22:15:50,129 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 22:15:50,129 INFO L276 IsEmpty]: Start isEmpty. Operand 36306 states and 194552 transitions. [2020-10-21 22:15:50,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-21 22:15:50,131 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:15:50,131 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:15:50,132 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2020-10-21 22:15:50,132 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]=== [2020-10-21 22:15:50,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:15:50,132 INFO L82 PathProgramCache]: Analyzing trace with hash -784435028, now seen corresponding path program 2 times [2020-10-21 22:15:50,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:15:50,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378141080] [2020-10-21 22:15:50,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:15:50,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:15:50,180 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-21 22:15:50,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378141080] [2020-10-21 22:15:50,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:15:50,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 22:15:50,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254478374] [2020-10-21 22:15:50,181 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 22:15:50,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:15:50,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 22:15:50,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-21 22:15:50,182 INFO L87 Difference]: Start difference. First operand 36306 states and 194552 transitions. Second operand 7 states. [2020-10-21 22:15:50,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:15:50,977 INFO L93 Difference]: Finished difference Result 83918 states and 404136 transitions. [2020-10-21 22:15:50,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 22:15:50,978 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-21 22:15:50,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:15:51,242 INFO L225 Difference]: With dead ends: 83918 [2020-10-21 22:15:51,242 INFO L226 Difference]: Without dead ends: 83863 [2020-10-21 22:15:51,243 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 [2020-10-21 22:15:52,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83863 states. [2020-10-21 22:15:53,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83863 to 37062. [2020-10-21 22:15:53,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37062 states. [2020-10-21 22:15:53,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37062 states to 37062 states and 198528 transitions. [2020-10-21 22:15:53,989 INFO L78 Accepts]: Start accepts. Automaton has 37062 states and 198528 transitions. Word has length 23 [2020-10-21 22:15:53,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:15:53,989 INFO L481 AbstractCegarLoop]: Abstraction has 37062 states and 198528 transitions. [2020-10-21 22:15:53,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 22:15:53,989 INFO L276 IsEmpty]: Start isEmpty. Operand 37062 states and 198528 transitions. [2020-10-21 22:15:53,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 22:15:53,992 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:15:53,992 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:15:53,992 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2020-10-21 22:15:53,993 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]=== [2020-10-21 22:15:53,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:15:53,993 INFO L82 PathProgramCache]: Analyzing trace with hash 456345565, now seen corresponding path program 1 times [2020-10-21 22:15:53,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:15:53,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692012818] [2020-10-21 22:15:53,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:15:53,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:15:54,063 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:15:54,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692012818] [2020-10-21 22:15:54,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214711835] [2020-10-21 22:15:54,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:15:54,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:15:54,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 22:15:54,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:15:54,278 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:15:54,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:15:54,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-21 22:15:54,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957814686] [2020-10-21 22:15:54,280 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-21 22:15:54,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:15:54,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-21 22:15:54,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-21 22:15:54,280 INFO L87 Difference]: Start difference. First operand 37062 states and 198528 transitions. Second operand 16 states. [2020-10-21 22:15:56,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:15:56,016 INFO L93 Difference]: Finished difference Result 122892 states and 561130 transitions. [2020-10-21 22:15:56,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:15:56,016 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-21 22:15:56,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:15:56,384 INFO L225 Difference]: With dead ends: 122892 [2020-10-21 22:15:56,384 INFO L226 Difference]: Without dead ends: 122862 [2020-10-21 22:15:56,385 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-21 22:15:58,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122862 states. [2020-10-21 22:15:59,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122862 to 36727. [2020-10-21 22:15:59,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36727 states. [2020-10-21 22:15:59,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36727 states to 36727 states and 196466 transitions. [2020-10-21 22:15:59,680 INFO L78 Accepts]: Start accepts. Automaton has 36727 states and 196466 transitions. Word has length 25 [2020-10-21 22:15:59,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:15:59,680 INFO L481 AbstractCegarLoop]: Abstraction has 36727 states and 196466 transitions. [2020-10-21 22:15:59,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-21 22:15:59,680 INFO L276 IsEmpty]: Start isEmpty. Operand 36727 states and 196466 transitions. [2020-10-21 22:15:59,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 22:15:59,683 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:15:59,683 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:15:59,883 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2020-10-21 22:15:59,884 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]=== [2020-10-21 22:15:59,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:15:59,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1399543848, now seen corresponding path program 1 times [2020-10-21 22:15:59,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:15:59,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043773174] [2020-10-21 22:15:59,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:15:59,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:15:59,952 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-21 22:15:59,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043773174] [2020-10-21 22:15:59,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062867591] [2020-10-21 22:15:59,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:16:00,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:16:00,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 22:16:00,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:16:00,162 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-21 22:16:00,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:16:00,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-21 22:16:00,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680037910] [2020-10-21 22:16:00,163 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-21 22:16:00,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:16:00,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-21 22:16:00,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-21 22:16:00,164 INFO L87 Difference]: Start difference. First operand 36727 states and 196466 transitions. Second operand 16 states. [2020-10-21 22:16:02,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:16:02,414 INFO L93 Difference]: Finished difference Result 121590 states and 554657 transitions. [2020-10-21 22:16:02,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:16:02,414 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-21 22:16:02,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:16:02,792 INFO L225 Difference]: With dead ends: 121590 [2020-10-21 22:16:02,792 INFO L226 Difference]: Without dead ends: 121560 [2020-10-21 22:16:02,792 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-21 22:16:03,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121560 states. [2020-10-21 22:16:08,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121560 to 36513. [2020-10-21 22:16:08,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36513 states. [2020-10-21 22:16:08,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36513 states to 36513 states and 195090 transitions. [2020-10-21 22:16:08,587 INFO L78 Accepts]: Start accepts. Automaton has 36513 states and 195090 transitions. Word has length 25 [2020-10-21 22:16:08,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:16:08,587 INFO L481 AbstractCegarLoop]: Abstraction has 36513 states and 195090 transitions. [2020-10-21 22:16:08,587 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-21 22:16:08,587 INFO L276 IsEmpty]: Start isEmpty. Operand 36513 states and 195090 transitions. [2020-10-21 22:16:08,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 22:16:08,591 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:16:08,591 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:16:08,792 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:16:08,792 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]=== [2020-10-21 22:16:08,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:16:08,793 INFO L82 PathProgramCache]: Analyzing trace with hash -244682160, now seen corresponding path program 2 times [2020-10-21 22:16:08,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:16:08,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642450011] [2020-10-21 22:16:08,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:16:08,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:16:08,863 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-21 22:16:08,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642450011] [2020-10-21 22:16:08,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133727846] [2020-10-21 22:16:08,863 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-21 22:16:08,966 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 22:16:08,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 22:16:08,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 22:16:08,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:16:09,083 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-21 22:16:09,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:16:09,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-21 22:16:09,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142894050] [2020-10-21 22:16:09,084 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-21 22:16:09,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:16:09,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-21 22:16:09,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-21 22:16:09,085 INFO L87 Difference]: Start difference. First operand 36513 states and 195090 transitions. Second operand 16 states. [2020-10-21 22:16:10,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:16:10,711 INFO L93 Difference]: Finished difference Result 120395 states and 548664 transitions. [2020-10-21 22:16:10,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:16:10,712 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-21 22:16:10,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:16:11,056 INFO L225 Difference]: With dead ends: 120395 [2020-10-21 22:16:11,056 INFO L226 Difference]: Without dead ends: 120362 [2020-10-21 22:16:11,057 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-21 22:16:12,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120362 states. [2020-10-21 22:16:14,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120362 to 36444. [2020-10-21 22:16:14,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36444 states. [2020-10-21 22:16:14,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36444 states to 36444 states and 194571 transitions. [2020-10-21 22:16:14,412 INFO L78 Accepts]: Start accepts. Automaton has 36444 states and 194571 transitions. Word has length 25 [2020-10-21 22:16:14,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:16:14,412 INFO L481 AbstractCegarLoop]: Abstraction has 36444 states and 194571 transitions. [2020-10-21 22:16:14,413 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-21 22:16:14,413 INFO L276 IsEmpty]: Start isEmpty. Operand 36444 states and 194571 transitions. [2020-10-21 22:16:14,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 22:16:14,415 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:16:14,415 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:16:14,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2020-10-21 22:16:14,616 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]=== [2020-10-21 22:16:14,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:16:14,617 INFO L82 PathProgramCache]: Analyzing trace with hash -244694405, now seen corresponding path program 2 times [2020-10-21 22:16:14,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:16:14,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77393656] [2020-10-21 22:16:14,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:16:14,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:16:14,684 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-21 22:16:14,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77393656] [2020-10-21 22:16:14,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200954199] [2020-10-21 22:16:14,685 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-21 22:16:14,832 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 22:16:14,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 22:16:14,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 22:16:14,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:16:14,985 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-21 22:16:14,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:16:14,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-21 22:16:14,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584181008] [2020-10-21 22:16:14,986 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-21 22:16:14,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:16:14,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-21 22:16:14,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-21 22:16:14,987 INFO L87 Difference]: Start difference. First operand 36444 states and 194571 transitions. Second operand 16 states. [2020-10-21 22:16:19,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:16:19,203 INFO L93 Difference]: Finished difference Result 119346 states and 543724 transitions. [2020-10-21 22:16:19,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:16:19,204 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-21 22:16:19,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:16:19,567 INFO L225 Difference]: With dead ends: 119346 [2020-10-21 22:16:19,567 INFO L226 Difference]: Without dead ends: 119313 [2020-10-21 22:16:19,568 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-21 22:16:20,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119313 states. [2020-10-21 22:16:22,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119313 to 36040. [2020-10-21 22:16:22,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36040 states. [2020-10-21 22:16:22,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36040 states to 36040 states and 192287 transitions. [2020-10-21 22:16:22,618 INFO L78 Accepts]: Start accepts. Automaton has 36040 states and 192287 transitions. Word has length 25 [2020-10-21 22:16:22,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:16:22,618 INFO L481 AbstractCegarLoop]: Abstraction has 36040 states and 192287 transitions. [2020-10-21 22:16:22,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-21 22:16:22,618 INFO L276 IsEmpty]: Start isEmpty. Operand 36040 states and 192287 transitions. [2020-10-21 22:16:22,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 22:16:22,621 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:16:22,621 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:16:22,821 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2020-10-21 22:16:22,822 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]=== [2020-10-21 22:16:22,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:16:22,822 INFO L82 PathProgramCache]: Analyzing trace with hash -767942371, now seen corresponding path program 3 times [2020-10-21 22:16:22,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:16:22,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874608839] [2020-10-21 22:16:22,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:16:22,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:16:22,891 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-21 22:16:22,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874608839] [2020-10-21 22:16:22,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354436146] [2020-10-21 22:16:22,892 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-21 22:16:22,989 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-21 22:16:22,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 22:16:22,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 22:16:22,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:16:23,101 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-21 22:16:23,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:16:23,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-21 22:16:23,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172907902] [2020-10-21 22:16:23,103 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-21 22:16:23,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:16:23,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-21 22:16:23,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-21 22:16:23,104 INFO L87 Difference]: Start difference. First operand 36040 states and 192287 transitions. Second operand 16 states. [2020-10-21 22:16:24,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:16:24,851 INFO L93 Difference]: Finished difference Result 119770 states and 545635 transitions. [2020-10-21 22:16:24,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:16:24,852 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-21 22:16:24,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:16:25,199 INFO L225 Difference]: With dead ends: 119770 [2020-10-21 22:16:25,199 INFO L226 Difference]: Without dead ends: 119740 [2020-10-21 22:16:25,199 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-21 22:16:26,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119740 states. [2020-10-21 22:16:30,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119740 to 35471. [2020-10-21 22:16:30,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35471 states. [2020-10-21 22:16:30,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35471 states to 35471 states and 189238 transitions. [2020-10-21 22:16:30,697 INFO L78 Accepts]: Start accepts. Automaton has 35471 states and 189238 transitions. Word has length 25 [2020-10-21 22:16:30,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:16:30,697 INFO L481 AbstractCegarLoop]: Abstraction has 35471 states and 189238 transitions. [2020-10-21 22:16:30,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-21 22:16:30,697 INFO L276 IsEmpty]: Start isEmpty. Operand 35471 states and 189238 transitions. [2020-10-21 22:16:30,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 22:16:30,699 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:16:30,699 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:16:30,900 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2020-10-21 22:16:30,900 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]=== [2020-10-21 22:16:30,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:16:30,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1189003014, now seen corresponding path program 1 times [2020-10-21 22:16:30,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:16:30,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766140503] [2020-10-21 22:16:30,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:16:30,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:16:30,973 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:16:30,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766140503] [2020-10-21 22:16:30,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543618880] [2020-10-21 22:16:30,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:16:31,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:16:31,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 22:16:31,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:16:31,186 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:16:31,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:16:31,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-21 22:16:31,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904952359] [2020-10-21 22:16:31,186 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-21 22:16:31,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:16:31,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-21 22:16:31,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-21 22:16:31,187 INFO L87 Difference]: Start difference. First operand 35471 states and 189238 transitions. Second operand 16 states. [2020-10-21 22:16:32,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:16:32,896 INFO L93 Difference]: Finished difference Result 121131 states and 553230 transitions. [2020-10-21 22:16:32,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:16:32,897 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-21 22:16:32,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:16:33,262 INFO L225 Difference]: With dead ends: 121131 [2020-10-21 22:16:33,262 INFO L226 Difference]: Without dead ends: 121101 [2020-10-21 22:16:33,262 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-21 22:16:35,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121101 states. [2020-10-21 22:16:36,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121101 to 35374. [2020-10-21 22:16:36,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35374 states. [2020-10-21 22:16:36,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35374 states to 35374 states and 188534 transitions. [2020-10-21 22:16:36,488 INFO L78 Accepts]: Start accepts. Automaton has 35374 states and 188534 transitions. Word has length 25 [2020-10-21 22:16:36,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:16:36,489 INFO L481 AbstractCegarLoop]: Abstraction has 35374 states and 188534 transitions. [2020-10-21 22:16:36,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-21 22:16:36,489 INFO L276 IsEmpty]: Start isEmpty. Operand 35374 states and 188534 transitions. [2020-10-21 22:16:36,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 22:16:36,491 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:16:36,491 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:16:36,691 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2020-10-21 22:16:36,692 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]=== [2020-10-21 22:16:36,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:16:36,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1461738274, now seen corresponding path program 2 times [2020-10-21 22:16:36,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:16:36,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498727334] [2020-10-21 22:16:36,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:16:36,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:16:36,762 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-21 22:16:36,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498727334] [2020-10-21 22:16:36,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197952548] [2020-10-21 22:16:36,763 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:16:36,857 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 22:16:36,857 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 22:16:36,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 22:16:36,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:16:36,972 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-21 22:16:36,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:16:36,973 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-21 22:16:36,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963968584] [2020-10-21 22:16:36,973 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-21 22:16:36,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:16:36,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-21 22:16:36,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-21 22:16:36,974 INFO L87 Difference]: Start difference. First operand 35374 states and 188534 transitions. Second operand 16 states. Received shutdown request... [2020-10-21 22:16:39,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:16:39,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:16:39,513 WARN L546 AbstractCegarLoop]: Verification canceled [2020-10-21 22:16:39,517 WARN L235 ceAbstractionStarter]: Timeout [2020-10-21 22:16:39,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 10:16:39 BasicIcfg [2020-10-21 22:16:39,518 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-21 22:16:39,519 INFO L168 Benchmark]: Toolchain (without parser) took 229769.93 ms. Allocated memory was 140.5 MB in the beginning and 3.1 GB in the end (delta: 2.9 GB). Free memory was 99.4 MB in the beginning and 1.8 GB in the end (delta: -1.7 GB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2020-10-21 22:16:39,519 INFO L168 Benchmark]: CDTParser took 2.88 ms. Allocated memory is still 140.5 MB. Free memory was 119.3 MB in the beginning and 119.0 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-10-21 22:16:39,520 INFO L168 Benchmark]: CACSL2BoogieTranslator took 810.36 ms. Allocated memory was 140.5 MB in the beginning and 200.8 MB in the end (delta: 60.3 MB). Free memory was 98.6 MB in the beginning and 156.0 MB in the end (delta: -57.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. [2020-10-21 22:16:39,520 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.69 ms. Allocated memory is still 200.8 MB. Free memory was 156.0 MB in the beginning and 153.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-10-21 22:16:39,520 INFO L168 Benchmark]: Boogie Preprocessor took 34.14 ms. Allocated memory is still 200.8 MB. Free memory was 153.9 MB in the beginning and 152.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-10-21 22:16:39,521 INFO L168 Benchmark]: RCFGBuilder took 537.69 ms. Allocated memory is still 200.8 MB. Free memory was 152.5 MB in the beginning and 130.2 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-10-21 22:16:39,521 INFO L168 Benchmark]: TraceAbstraction took 228318.35 ms. Allocated memory was 200.8 MB in the beginning and 3.1 GB in the end (delta: 2.9 GB). Free memory was 129.5 MB in the beginning and 1.8 GB in the end (delta: -1.6 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2020-10-21 22:16:39,527 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 2.88 ms. Allocated memory is still 140.5 MB. Free memory was 119.3 MB in the beginning and 119.0 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 810.36 ms. Allocated memory was 140.5 MB in the beginning and 200.8 MB in the end (delta: 60.3 MB). Free memory was 98.6 MB in the beginning and 156.0 MB in the end (delta: -57.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 57.69 ms. Allocated memory is still 200.8 MB. Free memory was 156.0 MB in the beginning and 153.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 34.14 ms. Allocated memory is still 200.8 MB. Free memory was 153.9 MB in the beginning and 152.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 537.69 ms. Allocated memory is still 200.8 MB. Free memory was 152.5 MB in the beginning and 130.2 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 228318.35 ms. Allocated memory was 200.8 MB in the beginning and 3.1 GB in the end (delta: 2.9 GB). Free memory was 129.5 MB in the beginning and 1.8 GB in the end (delta: -1.6 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 551 VarBasedMoverChecksPositive, 3 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 3 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 3 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.6s, 69 PlacesBefore, 18 PlacesAfterwards, 67 TransitionsBefore, 12 TransitionsAfterwards, 832 CoEnabledTransitionPairs, 7 FixpointIterations, 25 TrivialSequentialCompositions, 33 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 5 ConcurrentYvCompositions, 4 ChoiceCompositions, 69 TotalNumberOfCompositions, 793 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 776 VarBasedMoverChecksPositive, 12 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 12 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 27 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.4s, 92 PlacesBefore, 31 PlacesAfterwards, 88 TransitionsBefore, 21 TransitionsAfterwards, 1220 CoEnabledTransitionPairs, 6 FixpointIterations, 42 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 6 ConcurrentYvCompositions, 6 ChoiceCompositions, 86 TotalNumberOfCompositions, 1551 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1017 VarBasedMoverChecksPositive, 17 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 17 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 47 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.6s, 115 PlacesBefore, 41 PlacesAfterwards, 109 TransitionsBefore, 27 TransitionsAfterwards, 1668 CoEnabledTransitionPairs, 6 FixpointIterations, 55 TrivialSequentialCompositions, 30 ConcurrentSequentialCompositions, 8 TrivialYvCompositions, 6 ConcurrentYvCompositions, 8 ChoiceCompositions, 107 TotalNumberOfCompositions, 2216 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1366 VarBasedMoverChecksPositive, 23 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 23 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 71 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.7s, 138 PlacesBefore, 51 PlacesAfterwards, 130 TransitionsBefore, 33 TransitionsAfterwards, 2176 CoEnabledTransitionPairs, 6 FixpointIterations, 70 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 12 TrivialYvCompositions, 5 ConcurrentYvCompositions, 10 ChoiceCompositions, 134 TotalNumberOfCompositions, 3275 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1670 VarBasedMoverChecksPositive, 27 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 27 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 87 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.2s, 161 PlacesBefore, 61 PlacesAfterwards, 151 TransitionsBefore, 39 TransitionsAfterwards, 2744 CoEnabledTransitionPairs, 6 FixpointIterations, 89 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 17 TrivialYvCompositions, 6 ConcurrentYvCompositions, 12 ChoiceCompositions, 162 TotalNumberOfCompositions, 4200 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 2225 VarBasedMoverChecksPositive, 33 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 33 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 110 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.5s, 184 PlacesBefore, 71 PlacesAfterwards, 172 TransitionsBefore, 45 TransitionsAfterwards, 3372 CoEnabledTransitionPairs, 6 FixpointIterations, 109 TrivialSequentialCompositions, 43 ConcurrentSequentialCompositions, 19 TrivialYvCompositions, 6 ConcurrentYvCompositions, 14 ChoiceCompositions, 191 TotalNumberOfCompositions, 5911 MoverChecksTotal - TimeoutResultAtElement [Line: 683]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 683). Cancelled while BasicCegarLoop was constructing difference of abstraction (35374states) and FLOYD_HOARE automaton (currently 29 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (110909 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 63 locations, 1 error locations. Started 6 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 227.9s, OverallIterations: 105, TraceHistogramMax: 6, AutomataDifference: 87.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 19.4s, HoareTripleCheckerStatistics: 4695 SDtfs, 23315 SDslu, 16273 SDs, 0 SdLazy, 31207 SolverSat, 2020 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 25.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2548 GetRequests, 523 SyntacticMatches, 0 SemanticMatches, 2025 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13497 ImplicationChecksByTransitivity, 23.7s 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: 99.5s AutomataMinimizationTime, 99 MinimizatonAttempts, 2197787 StatesRemovedByMinimization, 92 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 8.6s InterpolantComputationTime, 2785 NumberOfCodeBlocks, 2769 NumberOfCodeBlocksAsserted, 155 NumberOfCheckSat, 2562 ConstructedInterpolants, 0 QuantifiedInterpolants, 320140 SizeOfPredicates, 186 NumberOfNonLiveVariables, 4457 ConjunctsInSsa, 291 ConjunctsInUnsatCore, 135 InterpolantComputations, 65 PerfectInterpolantSequences, 932/1512 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