/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/concurrent/pthreads/forkMultipleTimes.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 11:32:46,614 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 11:32:46,619 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 11:32:46,656 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 11:32:46,656 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 11:32:46,657 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 11:32:46,659 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 11:32:46,660 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 11:32:46,662 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 11:32:46,663 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 11:32:46,664 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 11:32:46,665 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 11:32:46,665 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 11:32:46,666 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 11:32:46,667 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 11:32:46,668 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 11:32:46,669 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 11:32:46,670 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 11:32:46,672 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 11:32:46,674 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 11:32:46,676 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 11:32:46,677 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 11:32:46,678 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 11:32:46,679 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 11:32:46,681 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 11:32:46,681 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 11:32:46,682 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 11:32:46,683 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 11:32:46,683 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 11:32:46,684 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 11:32:46,684 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 11:32:46,685 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 11:32:46,686 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 11:32:46,686 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 11:32:46,687 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 11:32:46,688 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 11:32:46,688 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 11:32:46,689 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 11:32:46,689 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 11:32:46,690 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 11:32:46,690 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 11:32:46,691 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-16 11:32:46,715 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 11:32:46,715 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 11:32:46,716 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 11:32:46,716 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 11:32:46,717 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 11:32:46,717 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 11:32:46,717 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 11:32:46,717 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 11:32:46,717 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 11:32:46,718 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 11:32:46,718 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 11:32:46,718 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 11:32:46,718 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 11:32:46,718 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 11:32:46,719 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 11:32:46,719 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 11:32:46,719 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 11:32:46,719 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 11:32:46,719 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 11:32:46,720 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 11:32:46,720 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 11:32:46,720 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 11:32:46,720 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 11:32:46,720 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 11:32:46,721 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 11:32:46,721 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 11:32:46,721 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 11:32:46,721 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 11:32:46,721 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-16 11:32:46,721 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 11:32:47,034 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 11:32:47,047 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 11:32:47,051 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 11:32:47,052 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 11:32:47,053 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 11:32:47,054 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/forkMultipleTimes.c [2020-10-16 11:32:47,118 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6f09f6e83/4b48d25bdbb84f7b97f2c567547f6d8b/FLAG5af37ca05 [2020-10-16 11:32:47,568 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 11:32:47,569 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/concurrent/pthreads/forkMultipleTimes.c [2020-10-16 11:32:47,569 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2020-10-16 11:32:47,570 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2020-10-16 11:32:47,610 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6f09f6e83/4b48d25bdbb84f7b97f2c567547f6d8b/FLAG5af37ca05 [2020-10-16 11:32:47,961 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6f09f6e83/4b48d25bdbb84f7b97f2c567547f6d8b [2020-10-16 11:32:47,970 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 11:32:47,972 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 11:32:47,973 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 11:32:47,973 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 11:32:47,977 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 11:32:47,978 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:32:47" (1/1) ... [2020-10-16 11:32:47,981 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d1de5c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:32:47, skipping insertion in model container [2020-10-16 11:32:47,981 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:32:47" (1/1) ... [2020-10-16 11:32:47,989 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 11:32:48,007 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 11:32:48,175 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 11:32:48,188 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 11:32:48,292 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 11:32:48,311 INFO L208 MainTranslator]: Completed translation [2020-10-16 11:32:48,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:32:48 WrapperNode [2020-10-16 11:32:48,313 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 11:32:48,315 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 11:32:48,315 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 11:32:48,315 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 11:32:48,324 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:32:48" (1/1) ... [2020-10-16 11:32:48,334 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:32:48" (1/1) ... [2020-10-16 11:32:48,353 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 11:32:48,353 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 11:32:48,353 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 11:32:48,353 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 11:32:48,361 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:32:48" (1/1) ... [2020-10-16 11:32:48,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:32:48" (1/1) ... [2020-10-16 11:32:48,363 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:32:48" (1/1) ... [2020-10-16 11:32:48,363 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:32:48" (1/1) ... [2020-10-16 11:32:48,368 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:32:48" (1/1) ... [2020-10-16 11:32:48,369 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:32:48" (1/1) ... [2020-10-16 11:32:48,371 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:32:48" (1/1) ... [2020-10-16 11:32:48,373 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 11:32:48,373 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 11:32:48,373 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 11:32:48,374 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 11:32:48,375 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:32:48" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 11:32:48,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 11:32:48,438 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-10-16 11:32:48,438 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-10-16 11:32:48,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 11:32:48,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 11:32:48,439 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-16 11:32:48,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-16 11:32:48,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 11:32:48,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 11:32:48,441 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 11:32:48,694 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 11:32:48,695 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-16 11:32:48,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:32:48 BoogieIcfgContainer [2020-10-16 11:32:48,698 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 11:32:48,699 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 11:32:48,699 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 11:32:48,704 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 11:32:48,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 11:32:47" (1/3) ... [2020-10-16 11:32:48,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@466073fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:32:48, skipping insertion in model container [2020-10-16 11:32:48,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:32:48" (2/3) ... [2020-10-16 11:32:48,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@466073fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:32:48, skipping insertion in model container [2020-10-16 11:32:48,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:32:48" (3/3) ... [2020-10-16 11:32:48,716 INFO L111 eAbstractionObserver]: Analyzing ICFG forkMultipleTimes.c [2020-10-16 11:32:48,746 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 11:32:48,748 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 11:32:48,767 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 11:32:48,770 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 11:32:48,819 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:48,819 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:48,820 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:48,820 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:48,820 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:48,820 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:48,821 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:48,821 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:48,821 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:48,822 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:48,822 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:48,822 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:48,822 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:48,823 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:48,823 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:48,823 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:48,823 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:48,824 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:48,824 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:48,824 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:48,824 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:48,825 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:48,825 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:48,825 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:48,826 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:48,826 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:48,826 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:48,826 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:48,827 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:48,827 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:48,827 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:48,827 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:48,828 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:48,828 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:48,828 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:48,828 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:48,829 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:48,829 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:48,829 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:48,830 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:48,830 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:48,830 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:48,830 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:48,831 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:48,831 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:48,835 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:48,836 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:48,836 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:48,836 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:48,836 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:48,837 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:48,837 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:48,843 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:48,843 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:48,843 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:48,843 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:48,844 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:48,844 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:48,844 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:48,847 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:48,848 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:48,848 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:48,848 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:48,848 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:48,848 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:48,849 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:32:48,867 INFO L149 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2020-10-16 11:32:48,882 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 11:32:48,904 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 11:32:48,904 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 11:32:48,904 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 11:32:48,904 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 11:32:48,905 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 11:32:48,905 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 11:32:48,905 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 11:32:48,905 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 11:32:48,924 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 11:32:48,928 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 77 transitions, 196 flow [2020-10-16 11:32:48,931 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 77 transitions, 196 flow [2020-10-16 11:32:48,933 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 81 places, 77 transitions, 196 flow [2020-10-16 11:32:48,998 INFO L129 PetriNetUnfolder]: 5/85 cut-off events. [2020-10-16 11:32:48,999 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2020-10-16 11:32:49,005 INFO L80 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 85 events. 5/85 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 114 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 50. Up to 6 conditions per place. [2020-10-16 11:32:49,013 INFO L117 LiptonReduction]: Number of co-enabled transitions 1008 [2020-10-16 11:32:50,365 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2020-10-16 11:32:50,510 INFO L132 LiptonReduction]: Checked pairs total: 4010 [2020-10-16 11:32:50,510 INFO L134 LiptonReduction]: Total number of compositions: 43 [2020-10-16 11:32:50,518 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 35 transitions, 112 flow [2020-10-16 11:32:50,548 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 354 states. [2020-10-16 11:32:50,550 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states. [2020-10-16 11:32:50,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:32:50,568 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:32:50,569 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:32:50,569 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-16 11:32:50,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:32:50,576 INFO L82 PathProgramCache]: Analyzing trace with hash -126150362, now seen corresponding path program 1 times [2020-10-16 11:32:50,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:32:50,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938115456] [2020-10-16 11:32:50,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:32:50,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:32:51,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:32:51,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938115456] [2020-10-16 11:32:51,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:32:51,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-16 11:32:51,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256508006] [2020-10-16 11:32:51,343 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 11:32:51,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:32:51,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 11:32:51,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-16 11:32:51,362 INFO L87 Difference]: Start difference. First operand 354 states. Second operand 12 states. [2020-10-16 11:32:52,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:32:52,361 INFO L93 Difference]: Finished difference Result 748 states and 1901 transitions. [2020-10-16 11:32:52,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-16 11:32:52,363 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 25 [2020-10-16 11:32:52,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:32:52,389 INFO L225 Difference]: With dead ends: 748 [2020-10-16 11:32:52,390 INFO L226 Difference]: Without dead ends: 740 [2020-10-16 11:32:52,392 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2020-10-16 11:32:52,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2020-10-16 11:32:52,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 487. [2020-10-16 11:32:52,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 487 states. [2020-10-16 11:32:52,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 1246 transitions. [2020-10-16 11:32:52,515 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 1246 transitions. Word has length 25 [2020-10-16 11:32:52,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:32:52,517 INFO L481 AbstractCegarLoop]: Abstraction has 487 states and 1246 transitions. [2020-10-16 11:32:52,517 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 11:32:52,517 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 1246 transitions. [2020-10-16 11:32:52,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:32:52,522 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:32:52,522 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:32:52,523 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 11:32:52,523 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-16 11:32:52,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:32:52,523 INFO L82 PathProgramCache]: Analyzing trace with hash -63589262, now seen corresponding path program 2 times [2020-10-16 11:32:52,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:32:52,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139432716] [2020-10-16 11:32:52,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:32:52,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:32:53,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:32:53,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139432716] [2020-10-16 11:32:53,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:32:53,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-16 11:32:53,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990423264] [2020-10-16 11:32:53,036 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 11:32:53,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:32:53,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 11:32:53,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2020-10-16 11:32:53,037 INFO L87 Difference]: Start difference. First operand 487 states and 1246 transitions. Second operand 16 states. [2020-10-16 11:32:55,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:32:55,912 INFO L93 Difference]: Finished difference Result 1252 states and 3200 transitions. [2020-10-16 11:32:55,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-16 11:32:55,913 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-16 11:32:55,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:32:55,927 INFO L225 Difference]: With dead ends: 1252 [2020-10-16 11:32:55,928 INFO L226 Difference]: Without dead ends: 1243 [2020-10-16 11:32:55,937 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=322, Invalid=1570, Unknown=0, NotChecked=0, Total=1892 [2020-10-16 11:32:55,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1243 states. [2020-10-16 11:32:55,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1243 to 560. [2020-10-16 11:32:55,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 560 states. [2020-10-16 11:32:55,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 1408 transitions. [2020-10-16 11:32:55,989 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 1408 transitions. Word has length 25 [2020-10-16 11:32:55,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:32:55,989 INFO L481 AbstractCegarLoop]: Abstraction has 560 states and 1408 transitions. [2020-10-16 11:32:55,990 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 11:32:55,990 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 1408 transitions. [2020-10-16 11:32:55,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:32:55,992 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:32:55,992 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:32:55,992 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 11:32:55,993 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-16 11:32:55,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:32:55,993 INFO L82 PathProgramCache]: Analyzing trace with hash -1895995450, now seen corresponding path program 1 times [2020-10-16 11:32:55,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:32:55,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12882050] [2020-10-16 11:32:55,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:32:56,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:32:56,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:32:56,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12882050] [2020-10-16 11:32:56,520 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:32:56,520 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-16 11:32:56,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634074229] [2020-10-16 11:32:56,521 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-16 11:32:56,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:32:56,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-16 11:32:56,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-10-16 11:32:56,523 INFO L87 Difference]: Start difference. First operand 560 states and 1408 transitions. Second operand 13 states. [2020-10-16 11:32:57,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:32:57,354 INFO L93 Difference]: Finished difference Result 683 states and 1739 transitions. [2020-10-16 11:32:57,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-16 11:32:57,355 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 25 [2020-10-16 11:32:57,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:32:57,361 INFO L225 Difference]: With dead ends: 683 [2020-10-16 11:32:57,362 INFO L226 Difference]: Without dead ends: 675 [2020-10-16 11:32:57,363 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2020-10-16 11:32:57,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2020-10-16 11:32:57,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 639. [2020-10-16 11:32:57,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 639 states. [2020-10-16 11:32:57,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 1623 transitions. [2020-10-16 11:32:57,391 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 1623 transitions. Word has length 25 [2020-10-16 11:32:57,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:32:57,392 INFO L481 AbstractCegarLoop]: Abstraction has 639 states and 1623 transitions. [2020-10-16 11:32:57,393 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-16 11:32:57,393 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 1623 transitions. [2020-10-16 11:32:57,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:32:57,395 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:32:57,395 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:32:57,396 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 11:32:57,396 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-16 11:32:57,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:32:57,396 INFO L82 PathProgramCache]: Analyzing trace with hash 374980096, now seen corresponding path program 2 times [2020-10-16 11:32:57,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:32:57,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470193701] [2020-10-16 11:32:57,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:32:57,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:32:57,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:32:57,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470193701] [2020-10-16 11:32:57,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:32:57,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-16 11:32:57,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818481637] [2020-10-16 11:32:57,958 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-16 11:32:57,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:32:57,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-16 11:32:57,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2020-10-16 11:32:57,959 INFO L87 Difference]: Start difference. First operand 639 states and 1623 transitions. Second operand 17 states. [2020-10-16 11:33:01,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:33:01,231 INFO L93 Difference]: Finished difference Result 1378 states and 3442 transitions. [2020-10-16 11:33:01,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-16 11:33:01,232 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 25 [2020-10-16 11:33:01,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:33:01,240 INFO L225 Difference]: With dead ends: 1378 [2020-10-16 11:33:01,240 INFO L226 Difference]: Without dead ends: 1360 [2020-10-16 11:33:01,241 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 507 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=372, Invalid=1980, Unknown=0, NotChecked=0, Total=2352 [2020-10-16 11:33:01,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1360 states. [2020-10-16 11:33:01,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1360 to 727. [2020-10-16 11:33:01,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 727 states. [2020-10-16 11:33:01,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 1860 transitions. [2020-10-16 11:33:01,273 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 1860 transitions. Word has length 25 [2020-10-16 11:33:01,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:33:01,273 INFO L481 AbstractCegarLoop]: Abstraction has 727 states and 1860 transitions. [2020-10-16 11:33:01,273 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-16 11:33:01,273 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 1860 transitions. [2020-10-16 11:33:01,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:33:01,276 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:33:01,276 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:33:01,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 11:33:01,277 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-16 11:33:01,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:33:01,277 INFO L82 PathProgramCache]: Analyzing trace with hash 284319048, now seen corresponding path program 1 times [2020-10-16 11:33:01,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:33:01,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179447511] [2020-10-16 11:33:01,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:33:01,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:33:01,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:33:01,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179447511] [2020-10-16 11:33:01,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:33:01,387 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-16 11:33:01,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579257131] [2020-10-16 11:33:01,388 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-16 11:33:01,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:33:01,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-16 11:33:01,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-16 11:33:01,389 INFO L87 Difference]: Start difference. First operand 727 states and 1860 transitions. Second operand 8 states. [2020-10-16 11:33:01,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:33:01,569 INFO L93 Difference]: Finished difference Result 912 states and 2286 transitions. [2020-10-16 11:33:01,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-16 11:33:01,569 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2020-10-16 11:33:01,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:33:01,575 INFO L225 Difference]: With dead ends: 912 [2020-10-16 11:33:01,575 INFO L226 Difference]: Without dead ends: 773 [2020-10-16 11:33:01,575 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:33:01,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2020-10-16 11:33:01,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 704. [2020-10-16 11:33:01,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 704 states. [2020-10-16 11:33:01,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 1796 transitions. [2020-10-16 11:33:01,595 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 1796 transitions. Word has length 25 [2020-10-16 11:33:01,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:33:01,595 INFO L481 AbstractCegarLoop]: Abstraction has 704 states and 1796 transitions. [2020-10-16 11:33:01,596 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-16 11:33:01,596 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 1796 transitions. [2020-10-16 11:33:01,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:33:01,598 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:33:01,598 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:33:01,598 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 11:33:01,599 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-16 11:33:01,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:33:01,599 INFO L82 PathProgramCache]: Analyzing trace with hash -1342328380, now seen corresponding path program 1 times [2020-10-16 11:33:01,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:33:01,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815773302] [2020-10-16 11:33:01,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:33:01,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:33:02,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:33:02,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815773302] [2020-10-16 11:33:02,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:33:02,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-16 11:33:02,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11925863] [2020-10-16 11:33:02,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-16 11:33:02,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:33:02,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-16 11:33:02,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-16 11:33:02,100 INFO L87 Difference]: Start difference. First operand 704 states and 1796 transitions. Second operand 14 states. [2020-10-16 11:33:03,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:33:03,989 INFO L93 Difference]: Finished difference Result 1088 states and 2765 transitions. [2020-10-16 11:33:03,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-16 11:33:03,989 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 25 [2020-10-16 11:33:03,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:33:03,997 INFO L225 Difference]: With dead ends: 1088 [2020-10-16 11:33:03,997 INFO L226 Difference]: Without dead ends: 1082 [2020-10-16 11:33:03,998 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=289, Invalid=833, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 11:33:04,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1082 states. [2020-10-16 11:33:04,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1082 to 771. [2020-10-16 11:33:04,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 771 states. [2020-10-16 11:33:04,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 1992 transitions. [2020-10-16 11:33:04,023 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 1992 transitions. Word has length 25 [2020-10-16 11:33:04,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:33:04,023 INFO L481 AbstractCegarLoop]: Abstraction has 771 states and 1992 transitions. [2020-10-16 11:33:04,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-16 11:33:04,023 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 1992 transitions. [2020-10-16 11:33:04,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:33:04,026 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:33:04,026 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:33:04,026 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 11:33:04,027 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-16 11:33:04,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:33:04,027 INFO L82 PathProgramCache]: Analyzing trace with hash -1285072000, now seen corresponding path program 1 times [2020-10-16 11:33:04,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:33:04,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376917742] [2020-10-16 11:33:04,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:33:04,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:33:04,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:33:04,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376917742] [2020-10-16 11:33:04,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:33:04,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-16 11:33:04,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643320518] [2020-10-16 11:33:04,371 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-16 11:33:04,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:33:04,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-16 11:33:04,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2020-10-16 11:33:04,372 INFO L87 Difference]: Start difference. First operand 771 states and 1992 transitions. Second operand 17 states. [2020-10-16 11:33:05,130 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 40 [2020-10-16 11:33:05,252 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 36 [2020-10-16 11:33:05,607 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 44 [2020-10-16 11:33:06,409 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 40 [2020-10-16 11:33:06,701 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2020-10-16 11:33:06,890 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2020-10-16 11:33:07,502 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 47 [2020-10-16 11:33:07,775 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 43 [2020-10-16 11:33:07,907 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 40 [2020-10-16 11:33:08,414 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 51 [2020-10-16 11:33:08,610 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 47 [2020-10-16 11:33:08,792 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 44 [2020-10-16 11:33:09,753 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 42 [2020-10-16 11:33:10,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:33:10,114 INFO L93 Difference]: Finished difference Result 1437 states and 3539 transitions. [2020-10-16 11:33:10,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-10-16 11:33:10,115 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 25 [2020-10-16 11:33:10,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:33:10,123 INFO L225 Difference]: With dead ends: 1437 [2020-10-16 11:33:10,123 INFO L226 Difference]: Without dead ends: 1424 [2020-10-16 11:33:10,125 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1144 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=898, Invalid=3524, Unknown=0, NotChecked=0, Total=4422 [2020-10-16 11:33:10,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1424 states. [2020-10-16 11:33:10,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1424 to 872. [2020-10-16 11:33:10,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 872 states. [2020-10-16 11:33:10,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 2245 transitions. [2020-10-16 11:33:10,153 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 2245 transitions. Word has length 25 [2020-10-16 11:33:10,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:33:10,154 INFO L481 AbstractCegarLoop]: Abstraction has 872 states and 2245 transitions. [2020-10-16 11:33:10,154 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-16 11:33:10,154 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 2245 transitions. [2020-10-16 11:33:10,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:33:10,157 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:33:10,157 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:33:10,157 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 11:33:10,158 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-16 11:33:10,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:33:10,158 INFO L82 PathProgramCache]: Analyzing trace with hash -421440302, now seen corresponding path program 2 times [2020-10-16 11:33:10,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:33:10,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998609051] [2020-10-16 11:33:10,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:33:10,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:33:10,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:33:10,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998609051] [2020-10-16 11:33:10,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:33:10,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-16 11:33:10,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390131537] [2020-10-16 11:33:10,531 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-16 11:33:10,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:33:10,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-16 11:33:10,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2020-10-16 11:33:10,532 INFO L87 Difference]: Start difference. First operand 872 states and 2245 transitions. Second operand 17 states. [2020-10-16 11:33:11,297 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 40 [2020-10-16 11:33:11,753 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 44 [2020-10-16 11:33:12,568 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 40 [2020-10-16 11:33:12,862 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2020-10-16 11:33:13,057 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2020-10-16 11:33:13,691 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 47 [2020-10-16 11:33:13,972 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 43 [2020-10-16 11:33:14,107 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 40 [2020-10-16 11:33:14,344 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 37 [2020-10-16 11:33:14,641 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 51 [2020-10-16 11:33:14,831 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 47 [2020-10-16 11:33:15,001 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 44 [2020-10-16 11:33:16,090 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 42 [2020-10-16 11:33:16,269 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 48 [2020-10-16 11:33:16,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:33:16,410 INFO L93 Difference]: Finished difference Result 1438 states and 3539 transitions. [2020-10-16 11:33:16,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-10-16 11:33:16,411 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 25 [2020-10-16 11:33:16,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:33:16,420 INFO L225 Difference]: With dead ends: 1438 [2020-10-16 11:33:16,420 INFO L226 Difference]: Without dead ends: 1419 [2020-10-16 11:33:16,422 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1141 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=918, Invalid=3638, Unknown=0, NotChecked=0, Total=4556 [2020-10-16 11:33:16,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1419 states. [2020-10-16 11:33:16,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1419 to 863. [2020-10-16 11:33:16,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 863 states. [2020-10-16 11:33:16,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 863 states to 863 states and 2222 transitions. [2020-10-16 11:33:16,447 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 2222 transitions. Word has length 25 [2020-10-16 11:33:16,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:33:16,448 INFO L481 AbstractCegarLoop]: Abstraction has 863 states and 2222 transitions. [2020-10-16 11:33:16,448 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-16 11:33:16,448 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 2222 transitions. [2020-10-16 11:33:16,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:33:16,451 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:33:16,451 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:33:16,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 11:33:16,451 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-16 11:33:16,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:33:16,452 INFO L82 PathProgramCache]: Analyzing trace with hash -1646732586, now seen corresponding path program 3 times [2020-10-16 11:33:16,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:33:16,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470742564] [2020-10-16 11:33:16,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:33:16,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:33:16,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:33:16,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470742564] [2020-10-16 11:33:16,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:33:16,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-16 11:33:16,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140013340] [2020-10-16 11:33:16,863 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-16 11:33:16,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:33:16,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-16 11:33:16,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2020-10-16 11:33:16,863 INFO L87 Difference]: Start difference. First operand 863 states and 2222 transitions. Second operand 17 states. [2020-10-16 11:33:17,603 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2020-10-16 11:33:17,752 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2020-10-16 11:33:17,929 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2020-10-16 11:33:18,121 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2020-10-16 11:33:18,366 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2020-10-16 11:33:18,720 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2020-10-16 11:33:18,987 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2020-10-16 11:33:19,187 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2020-10-16 11:33:19,377 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2020-10-16 11:33:19,595 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2020-10-16 11:33:19,877 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2020-10-16 11:33:20,076 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2020-10-16 11:33:20,303 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2020-10-16 11:33:20,521 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2020-10-16 11:33:20,752 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2020-10-16 11:33:20,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:33:20,809 INFO L93 Difference]: Finished difference Result 1720 states and 4208 transitions. [2020-10-16 11:33:20,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-16 11:33:20,809 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 25 [2020-10-16 11:33:20,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:33:20,818 INFO L225 Difference]: With dead ends: 1720 [2020-10-16 11:33:20,818 INFO L226 Difference]: Without dead ends: 1702 [2020-10-16 11:33:20,819 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=543, Invalid=1437, Unknown=0, NotChecked=0, Total=1980 [2020-10-16 11:33:20,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2020-10-16 11:33:20,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 940. [2020-10-16 11:33:20,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 940 states. [2020-10-16 11:33:20,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 2409 transitions. [2020-10-16 11:33:20,850 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 2409 transitions. Word has length 25 [2020-10-16 11:33:20,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:33:20,850 INFO L481 AbstractCegarLoop]: Abstraction has 940 states and 2409 transitions. [2020-10-16 11:33:20,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-16 11:33:20,850 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 2409 transitions. [2020-10-16 11:33:20,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:33:20,853 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:33:20,853 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:33:20,854 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 11:33:20,854 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-16 11:33:20,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:33:20,854 INFO L82 PathProgramCache]: Analyzing trace with hash 1982583190, now seen corresponding path program 3 times [2020-10-16 11:33:20,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:33:20,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514869868] [2020-10-16 11:33:20,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:33:20,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:33:21,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:33:21,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514869868] [2020-10-16 11:33:21,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:33:21,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-16 11:33:21,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307007406] [2020-10-16 11:33:21,459 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 11:33:21,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:33:21,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 11:33:21,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-10-16 11:33:21,461 INFO L87 Difference]: Start difference. First operand 940 states and 2409 transitions. Second operand 15 states. [2020-10-16 11:33:21,709 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 33 [2020-10-16 11:33:21,885 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2020-10-16 11:33:22,175 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 48 [2020-10-16 11:33:22,389 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2020-10-16 11:33:22,735 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2020-10-16 11:33:23,018 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2020-10-16 11:33:23,472 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2020-10-16 11:33:24,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:33:24,363 INFO L93 Difference]: Finished difference Result 1246 states and 3165 transitions. [2020-10-16 11:33:24,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-16 11:33:24,364 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 25 [2020-10-16 11:33:24,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:33:24,370 INFO L225 Difference]: With dead ends: 1246 [2020-10-16 11:33:24,370 INFO L226 Difference]: Without dead ends: 1230 [2020-10-16 11:33:24,371 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=290, Invalid=832, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 11:33:24,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1230 states. [2020-10-16 11:33:24,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1230 to 1050. [2020-10-16 11:33:24,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1050 states. [2020-10-16 11:33:24,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1050 states to 1050 states and 2751 transitions. [2020-10-16 11:33:24,399 INFO L78 Accepts]: Start accepts. Automaton has 1050 states and 2751 transitions. Word has length 25 [2020-10-16 11:33:24,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:33:24,400 INFO L481 AbstractCegarLoop]: Abstraction has 1050 states and 2751 transitions. [2020-10-16 11:33:24,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 11:33:24,400 INFO L276 IsEmpty]: Start isEmpty. Operand 1050 states and 2751 transitions. [2020-10-16 11:33:24,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:33:24,403 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:33:24,403 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:33:24,404 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-16 11:33:24,404 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-16 11:33:24,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:33:24,404 INFO L82 PathProgramCache]: Analyzing trace with hash -1689584038, now seen corresponding path program 2 times [2020-10-16 11:33:24,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:33:24,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941097019] [2020-10-16 11:33:24,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:33:24,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 11:33:24,421 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 11:33:24,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 11:33:24,434 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 11:33:24,464 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 11:33:24,465 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 11:33:24,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-16 11:33:24,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 11:33:24 BasicIcfg [2020-10-16 11:33:24,518 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 11:33:24,520 INFO L168 Benchmark]: Toolchain (without parser) took 36548.49 ms. Allocated memory was 144.7 MB in the beginning and 483.9 MB in the end (delta: 339.2 MB). Free memory was 98.8 MB in the beginning and 137.2 MB in the end (delta: -38.4 MB). Peak memory consumption was 300.8 MB. Max. memory is 7.1 GB. [2020-10-16 11:33:24,521 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 144.7 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-16 11:33:24,521 INFO L168 Benchmark]: CACSL2BoogieTranslator took 340.27 ms. Allocated memory was 144.7 MB in the beginning and 201.3 MB in the end (delta: 56.6 MB). Free memory was 98.4 MB in the beginning and 179.0 MB in the end (delta: -80.7 MB). Peak memory consumption was 18.3 MB. Max. memory is 7.1 GB. [2020-10-16 11:33:24,522 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.14 ms. Allocated memory is still 201.3 MB. Free memory was 179.0 MB in the beginning and 177.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-16 11:33:24,523 INFO L168 Benchmark]: Boogie Preprocessor took 19.79 ms. Allocated memory is still 201.3 MB. Free memory was 177.0 MB in the beginning and 175.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. [2020-10-16 11:33:24,523 INFO L168 Benchmark]: RCFGBuilder took 324.59 ms. Allocated memory is still 201.3 MB. Free memory was 175.2 MB in the beginning and 157.2 MB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 7.1 GB. [2020-10-16 11:33:24,524 INFO L168 Benchmark]: TraceAbstraction took 35819.46 ms. Allocated memory was 201.3 MB in the beginning and 483.9 MB in the end (delta: 282.6 MB). Free memory was 157.2 MB in the beginning and 137.2 MB in the end (delta: 20.0 MB). Peak memory consumption was 302.6 MB. Max. memory is 7.1 GB. [2020-10-16 11:33:24,528 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 144.7 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 340.27 ms. Allocated memory was 144.7 MB in the beginning and 201.3 MB in the end (delta: 56.6 MB). Free memory was 98.4 MB in the beginning and 179.0 MB in the end (delta: -80.7 MB). Peak memory consumption was 18.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 38.14 ms. Allocated memory is still 201.3 MB. Free memory was 179.0 MB in the beginning and 177.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 19.79 ms. Allocated memory is still 201.3 MB. Free memory was 177.0 MB in the beginning and 175.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 324.59 ms. Allocated memory is still 201.3 MB. Free memory was 175.2 MB in the beginning and 157.2 MB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 35819.46 ms. Allocated memory was 201.3 MB in the beginning and 483.9 MB in the end (delta: 282.6 MB). Free memory was 157.2 MB in the beginning and 137.2 MB in the end (delta: 20.0 MB). Peak memory consumption was 302.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 719 VarBasedMoverChecksPositive, 45 VarBasedMoverChecksNegative, 4 SemBasedMoverChecksPositive, 41 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 188 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.5s, 81 PlacesBefore, 39 PlacesAfterwards, 77 TransitionsBefore, 35 TransitionsAfterwards, 1008 CoEnabledTransitionPairs, 5 FixpointIterations, 25 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 43 TotalNumberOfCompositions, 4010 MoverChecksTotal - CounterExampleResult [Line: 37]: assertion can be violated assertion can be violated We found a FailurePath: [L13] 0 int counter = 0; [L23] 0 int val = 0; [L25] 0 pthread_t first_thread_id; [L26] 0 pthread_t second_thread_id; [L27] 0 pthread_t third_thread_id; [L29] FCALL, FORK 0 pthread_create(&first_thread_id, NULL, foo, &val) VAL [counter=0, n={8:0}] [L30] FCALL, FORK 0 pthread_create(&second_thread_id, NULL, foo, &val) VAL [counter=0, n={8:0}] [L16] 2 int *x = (int *)n; [L17] 2 ++counter VAL [++counter=1, counter=0, n={8:0}, n={8:0}, x={8:0}] [L31] FCALL, FORK 0 pthread_create(&third_thread_id, NULL, foo, &val) VAL [++counter=1, counter=0, n={8:0}, n={8:0}, x={8:0}] [L16] 3 int *x = (int *)n; [L17] EXPR 3 ++counter VAL [++counter=1, counter=1, n={8:0}, n={8:0}, x={8:0}] [L17] 3 *x = ++counter [L18] 3 return 0; [L17] 2 ++counter VAL [++counter=1, \result={0:0}, counter=2, n={8:0}, n={8:0}, x={8:0}] [L16] 1 int *x = (int *)n; [L17] EXPR 1 ++counter VAL [++counter=3, \result={0:0}, counter=3, n={8:0}, n={8:0}, x={8:0}] [L33] 0 \read(first_thread_id) VAL [++counter=3, \result={0:0}, counter=3, n={8:0}, n={8:0}, x={8:0}] [L17] 1 *x = ++counter [L18] 1 return 0; [L17] 2 *x = ++counter [L18] 2 return 0; [L33] FCALL, JOIN 1 pthread_join(first_thread_id, NULL) VAL [\result={0:0}, counter=3, n={8:0}, n={8:0}, x={8:0}] [L34] 0 \read(second_thread_id) VAL [\result={0:0}, counter=3, n={8:0}, n={8:0}, x={8:0}] [L34] FCALL, JOIN 2 pthread_join(second_thread_id, NULL) VAL [\result={0:0}, counter=3, n={8:0}, n={8:0}, x={8:0}] [L35] 0 \read(third_thread_id) VAL [\result={0:0}, counter=3, n={8:0}, n={8:0}, x={8:0}] [L35] FCALL, JOIN 3 pthread_join(third_thread_id, NULL) VAL [\result={0:0}, counter=3, n={8:0}, n={8:0}, x={8:0}] [L37] FCALL 0 IdentifierExpression[val] [L37] 0 CodeAnnotStmt[Assertion] VAL [\result={0:0}, counter=3, n={8:0}, n={8:0}, x={8:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 35.5s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 28.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 458 SDtfs, 2639 SDslu, 2851 SDs, 0 SdLazy, 8096 SolverSat, 534 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 384 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 375 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3983 ImplicationChecksByTransitivity, 24.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1050occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 10 MinimizatonAttempts, 4035 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 4.2s InterpolantComputationTime, 275 NumberOfCodeBlocks, 275 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 240 ConstructedInterpolants, 0 QuantifiedInterpolants, 119808 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 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 proved your program to be incorrect! Received shutdown request...