/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/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf -i ../../../trunk/examples/concurrent/pthreads/forkMultipleTimes.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c7e336b [2020-10-05 23:52:18,101 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-05 23:52:18,104 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-05 23:52:18,146 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-05 23:52:18,146 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-05 23:52:18,154 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-05 23:52:18,155 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-05 23:52:18,162 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-05 23:52:18,164 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-05 23:52:18,167 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-05 23:52:18,168 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-05 23:52:18,169 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-05 23:52:18,169 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-05 23:52:18,172 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-05 23:52:18,174 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-05 23:52:18,176 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-05 23:52:18,177 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-05 23:52:18,178 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-05 23:52:18,180 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-05 23:52:18,188 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-05 23:52:18,190 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-05 23:52:18,191 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-05 23:52:18,192 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-05 23:52:18,193 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-05 23:52:18,207 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-05 23:52:18,212 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-05 23:52:18,213 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-05 23:52:18,213 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-05 23:52:18,217 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-05 23:52:18,218 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-05 23:52:18,218 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-05 23:52:18,219 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-05 23:52:18,221 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-05 23:52:18,221 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-05 23:52:18,222 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-05 23:52:18,222 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-05 23:52:18,223 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf [2020-10-05 23:52:18,253 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-05 23:52:18,253 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-05 23:52:18,254 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-05 23:52:18,255 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-05 23:52:18,255 INFO L138 SettingsManager]: * Use SBE=true [2020-10-05 23:52:18,255 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-05 23:52:18,255 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-05 23:52:18,255 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-05 23:52:18,256 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-05 23:52:18,256 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-05 23:52:18,256 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-05 23:52:18,256 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-05 23:52:18,256 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-05 23:52:18,257 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-05 23:52:18,257 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-05 23:52:18,257 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-05 23:52:18,257 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-05 23:52:18,257 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-05 23:52:18,258 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-05 23:52:18,258 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-05 23:52:18,258 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-05 23:52:18,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-05 23:52:18,258 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-05 23:52:18,259 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-05 23:52:18,259 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-05 23:52:18,259 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-05 23:52:18,259 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-05 23:52:18,259 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-05 23:52:18,259 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-05 23:52:18,570 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-05 23:52:18,584 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-05 23:52:18,589 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-05 23:52:18,591 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-05 23:52:18,591 INFO L275 PluginConnector]: CDTParser initialized [2020-10-05 23:52:18,592 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/forkMultipleTimes.c [2020-10-05 23:52:18,658 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2c2664fe/84aa643357ed4b5c8fa6aaa660e13eea/FLAGf229b9909 [2020-10-05 23:52:19,078 INFO L306 CDTParser]: Found 1 translation units. [2020-10-05 23:52:19,079 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/forkMultipleTimes.c [2020-10-05 23:52:19,079 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2020-10-05 23:52:19,080 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2020-10-05 23:52:19,133 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2c2664fe/84aa643357ed4b5c8fa6aaa660e13eea/FLAGf229b9909 [2020-10-05 23:52:19,441 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2c2664fe/84aa643357ed4b5c8fa6aaa660e13eea [2020-10-05 23:52:19,450 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-05 23:52:19,452 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-05 23:52:19,453 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-05 23:52:19,454 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-05 23:52:19,457 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-05 23:52:19,458 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 11:52:19" (1/1) ... [2020-10-05 23:52:19,461 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10a2c3b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:52:19, skipping insertion in model container [2020-10-05 23:52:19,462 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 11:52:19" (1/1) ... [2020-10-05 23:52:19,470 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-05 23:52:19,491 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-05 23:52:19,649 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-05 23:52:19,751 INFO L203 MainTranslator]: Completed pre-run [2020-10-05 23:52:19,765 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-05 23:52:19,780 INFO L208 MainTranslator]: Completed translation [2020-10-05 23:52:19,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:52:19 WrapperNode [2020-10-05 23:52:19,781 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-05 23:52:19,782 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-05 23:52:19,782 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-05 23:52:19,782 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-05 23:52:19,790 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:52:19" (1/1) ... [2020-10-05 23:52:19,797 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:52:19" (1/1) ... [2020-10-05 23:52:19,815 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-05 23:52:19,818 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-05 23:52:19,819 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-05 23:52:19,819 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-05 23:52:19,827 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:52:19" (1/1) ... [2020-10-05 23:52:19,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:52:19" (1/1) ... [2020-10-05 23:52:19,832 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:52:19" (1/1) ... [2020-10-05 23:52:19,832 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:52:19" (1/1) ... [2020-10-05 23:52:19,840 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:52:19" (1/1) ... [2020-10-05 23:52:19,842 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:52:19" (1/1) ... [2020-10-05 23:52:19,845 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:52:19" (1/1) ... [2020-10-05 23:52:19,848 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-05 23:52:19,848 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-05 23:52:19,848 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-05 23:52:19,849 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-05 23:52:19,850 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:52:19" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-05 23:52:19,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-05 23:52:19,904 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-10-05 23:52:19,904 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-10-05 23:52:19,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-05 23:52:19,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-05 23:52:19,905 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-05 23:52:19,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-05 23:52:19,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-05 23:52:19,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-05 23:52:19,907 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-05 23:52:20,163 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-05 23:52:20,164 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-05 23:52:20,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 11:52:20 BoogieIcfgContainer [2020-10-05 23:52:20,167 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-05 23:52:20,168 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-05 23:52:20,169 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-05 23:52:20,172 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-05 23:52:20,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.10 11:52:19" (1/3) ... [2020-10-05 23:52:20,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1adbb970 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 11:52:20, skipping insertion in model container [2020-10-05 23:52:20,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:52:19" (2/3) ... [2020-10-05 23:52:20,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1adbb970 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 11:52:20, skipping insertion in model container [2020-10-05 23:52:20,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 11:52:20" (3/3) ... [2020-10-05 23:52:20,176 INFO L109 eAbstractionObserver]: Analyzing ICFG forkMultipleTimes.c [2020-10-05 23:52:20,189 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-05 23:52:20,190 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-05 23:52:20,198 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-05 23:52:20,200 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-05 23:52:20,245 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:20,246 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:20,246 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:20,246 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:20,247 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:20,247 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:20,247 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:20,247 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:20,247 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:20,248 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:20,248 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:20,248 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:20,249 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:20,249 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:20,249 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:20,249 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:20,250 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:20,250 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:20,250 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:20,250 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:20,251 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:20,251 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:20,251 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:20,251 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:20,252 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:20,252 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:20,252 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:20,252 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:20,253 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:20,253 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:20,253 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:20,254 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:20,254 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:20,254 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:20,254 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:20,254 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:20,255 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:20,255 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:20,255 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:20,256 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:20,256 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:20,256 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:20,257 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:20,257 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:20,258 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:20,262 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:20,262 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:20,262 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:20,263 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:20,263 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:20,263 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:20,263 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:20,270 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:20,270 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:20,270 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:20,271 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:20,271 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:20,271 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:20,271 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:20,274 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:20,275 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:20,275 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:20,275 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:20,275 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:20,276 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:20,276 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:52:20,308 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-05 23:52:20,331 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-05 23:52:20,331 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-05 23:52:20,331 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-05 23:52:20,332 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-05 23:52:20,332 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-05 23:52:20,332 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-05 23:52:20,332 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-05 23:52:20,333 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-05 23:52:20,352 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 77 transitions, 196 flow [2020-10-05 23:52:20,354 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 81 places, 77 transitions, 196 flow [2020-10-05 23:52:20,436 INFO L129 PetriNetUnfolder]: 5/85 cut-off events. [2020-10-05 23:52:20,437 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2020-10-05 23:52:20,443 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. [2020-10-05 23:52:20,447 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 81 places, 77 transitions, 196 flow [2020-10-05 23:52:20,489 INFO L129 PetriNetUnfolder]: 5/85 cut-off events. [2020-10-05 23:52:20,489 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2020-10-05 23:52:20,490 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. [2020-10-05 23:52:20,497 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1008 [2020-10-05 23:52:20,499 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-10-05 23:52:21,672 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2020-10-05 23:52:21,810 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1623 [2020-10-05 23:52:21,810 INFO L214 etLargeBlockEncoding]: Total number of compositions: 43 [2020-10-05 23:52:21,814 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 35 transitions, 112 flow [2020-10-05 23:52:21,848 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 354 states. [2020-10-05 23:52:21,851 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states. [2020-10-05 23:52:21,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-05 23:52:21,866 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:52:21,867 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] [2020-10-05 23:52:21,868 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-05 23:52:21,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:52:21,874 INFO L82 PathProgramCache]: Analyzing trace with hash -126150362, now seen corresponding path program 1 times [2020-10-05 23:52:21,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:52:21,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190681512] [2020-10-05 23:52:21,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:52:22,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:52:22,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:52:22,571 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190681512] [2020-10-05 23:52:22,572 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:52:22,572 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-05 23:52:22,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143373647] [2020-10-05 23:52:22,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-05 23:52:22,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:52:22,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-05 23:52:22,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-05 23:52:22,600 INFO L87 Difference]: Start difference. First operand 354 states. Second operand 12 states. [2020-10-05 23:52:23,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:52:23,713 INFO L93 Difference]: Finished difference Result 748 states and 1901 transitions. [2020-10-05 23:52:23,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-05 23:52:23,715 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 25 [2020-10-05 23:52:23,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:52:23,747 INFO L225 Difference]: With dead ends: 748 [2020-10-05 23:52:23,747 INFO L226 Difference]: Without dead ends: 740 [2020-10-05 23:52:23,749 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2020-10-05 23:52:23,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2020-10-05 23:52:23,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 487. [2020-10-05 23:52:23,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 487 states. [2020-10-05 23:52:23,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 1246 transitions. [2020-10-05 23:52:23,839 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 1246 transitions. Word has length 25 [2020-10-05 23:52:23,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:52:23,840 INFO L479 AbstractCegarLoop]: Abstraction has 487 states and 1246 transitions. [2020-10-05 23:52:23,841 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-05 23:52:23,841 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 1246 transitions. [2020-10-05 23:52:23,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-05 23:52:23,849 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:52:23,850 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] [2020-10-05 23:52:23,850 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-05 23:52:23,850 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-05 23:52:23,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:52:23,851 INFO L82 PathProgramCache]: Analyzing trace with hash -63589262, now seen corresponding path program 2 times [2020-10-05 23:52:23,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:52:23,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346550777] [2020-10-05 23:52:23,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:52:23,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:52:24,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:52:24,389 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346550777] [2020-10-05 23:52:24,390 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:52:24,390 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-05 23:52:24,390 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692142645] [2020-10-05 23:52:24,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-05 23:52:24,392 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:52:24,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-05 23:52:24,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2020-10-05 23:52:24,394 INFO L87 Difference]: Start difference. First operand 487 states and 1246 transitions. Second operand 16 states. [2020-10-05 23:52:27,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:52:27,304 INFO L93 Difference]: Finished difference Result 1252 states and 3200 transitions. [2020-10-05 23:52:27,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-05 23:52:27,305 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-05 23:52:27,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:52:27,317 INFO L225 Difference]: With dead ends: 1252 [2020-10-05 23:52:27,318 INFO L226 Difference]: Without dead ends: 1243 [2020-10-05 23:52:27,319 INFO L675 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 [2020-10-05 23:52:27,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1243 states. [2020-10-05 23:52:27,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1243 to 560. [2020-10-05 23:52:27,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 560 states. [2020-10-05 23:52:27,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 1408 transitions. [2020-10-05 23:52:27,365 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 1408 transitions. Word has length 25 [2020-10-05 23:52:27,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:52:27,365 INFO L479 AbstractCegarLoop]: Abstraction has 560 states and 1408 transitions. [2020-10-05 23:52:27,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-05 23:52:27,366 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 1408 transitions. [2020-10-05 23:52:27,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-05 23:52:27,368 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:52:27,368 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] [2020-10-05 23:52:27,369 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-05 23:52:27,369 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-05 23:52:27,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:52:27,369 INFO L82 PathProgramCache]: Analyzing trace with hash -1895995450, now seen corresponding path program 1 times [2020-10-05 23:52:27,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:52:27,370 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938661573] [2020-10-05 23:52:27,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:52:27,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:52:27,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:52:27,931 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938661573] [2020-10-05 23:52:27,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:52:27,931 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-05 23:52:27,931 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64390548] [2020-10-05 23:52:27,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 23:52:27,932 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:52:27,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 23:52:27,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:52:27,933 INFO L87 Difference]: Start difference. First operand 560 states and 1408 transitions. Second operand 13 states. [2020-10-05 23:52:28,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:52:28,806 INFO L93 Difference]: Finished difference Result 683 states and 1739 transitions. [2020-10-05 23:52:28,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-05 23:52:28,808 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 25 [2020-10-05 23:52:28,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:52:28,812 INFO L225 Difference]: With dead ends: 683 [2020-10-05 23:52:28,812 INFO L226 Difference]: Without dead ends: 675 [2020-10-05 23:52:28,813 INFO L675 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 [2020-10-05 23:52:28,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2020-10-05 23:52:28,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 639. [2020-10-05 23:52:28,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 639 states. [2020-10-05 23:52:28,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 1623 transitions. [2020-10-05 23:52:28,840 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 1623 transitions. Word has length 25 [2020-10-05 23:52:28,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:52:28,841 INFO L479 AbstractCegarLoop]: Abstraction has 639 states and 1623 transitions. [2020-10-05 23:52:28,841 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 23:52:28,841 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 1623 transitions. [2020-10-05 23:52:28,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-05 23:52:28,844 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:52:28,844 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] [2020-10-05 23:52:28,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-05 23:52:28,845 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-05 23:52:28,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:52:28,845 INFO L82 PathProgramCache]: Analyzing trace with hash 374980096, now seen corresponding path program 2 times [2020-10-05 23:52:28,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:52:28,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456070123] [2020-10-05 23:52:28,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:52:28,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:52:29,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:52:29,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456070123] [2020-10-05 23:52:29,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:52:29,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-05 23:52:29,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212701202] [2020-10-05 23:52:29,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 23:52:29,364 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:52:29,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 23:52:29,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2020-10-05 23:52:29,365 INFO L87 Difference]: Start difference. First operand 639 states and 1623 transitions. Second operand 17 states. [2020-10-05 23:52:32,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:52:32,727 INFO L93 Difference]: Finished difference Result 1378 states and 3442 transitions. [2020-10-05 23:52:32,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-05 23:52:32,727 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 25 [2020-10-05 23:52:32,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:52:32,736 INFO L225 Difference]: With dead ends: 1378 [2020-10-05 23:52:32,736 INFO L226 Difference]: Without dead ends: 1360 [2020-10-05 23:52:32,739 INFO L675 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 [2020-10-05 23:52:32,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1360 states. [2020-10-05 23:52:32,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1360 to 727. [2020-10-05 23:52:32,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 727 states. [2020-10-05 23:52:32,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 1860 transitions. [2020-10-05 23:52:32,776 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 1860 transitions. Word has length 25 [2020-10-05 23:52:32,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:52:32,776 INFO L479 AbstractCegarLoop]: Abstraction has 727 states and 1860 transitions. [2020-10-05 23:52:32,776 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 23:52:32,776 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 1860 transitions. [2020-10-05 23:52:32,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-05 23:52:32,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:52:32,780 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] [2020-10-05 23:52:32,780 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-05 23:52:32,781 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-05 23:52:32,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:52:32,781 INFO L82 PathProgramCache]: Analyzing trace with hash 284319048, now seen corresponding path program 1 times [2020-10-05 23:52:32,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:52:32,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111309142] [2020-10-05 23:52:32,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:52:32,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:52:32,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:52:32,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111309142] [2020-10-05 23:52:32,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:52:32,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-05 23:52:32,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767312394] [2020-10-05 23:52:32,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-05 23:52:32,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:52:32,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-05 23:52:32,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-05 23:52:32,909 INFO L87 Difference]: Start difference. First operand 727 states and 1860 transitions. Second operand 8 states. [2020-10-05 23:52:33,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:52:33,071 INFO L93 Difference]: Finished difference Result 912 states and 2286 transitions. [2020-10-05 23:52:33,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-05 23:52:33,072 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2020-10-05 23:52:33,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:52:33,077 INFO L225 Difference]: With dead ends: 912 [2020-10-05 23:52:33,077 INFO L226 Difference]: Without dead ends: 773 [2020-10-05 23:52:33,078 INFO L675 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 [2020-10-05 23:52:33,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2020-10-05 23:52:33,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 704. [2020-10-05 23:52:33,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 704 states. [2020-10-05 23:52:33,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 1796 transitions. [2020-10-05 23:52:33,099 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 1796 transitions. Word has length 25 [2020-10-05 23:52:33,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:52:33,099 INFO L479 AbstractCegarLoop]: Abstraction has 704 states and 1796 transitions. [2020-10-05 23:52:33,099 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-05 23:52:33,099 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 1796 transitions. [2020-10-05 23:52:33,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-05 23:52:33,102 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:52:33,102 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] [2020-10-05 23:52:33,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-05 23:52:33,102 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-05 23:52:33,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:52:33,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1342328380, now seen corresponding path program 1 times [2020-10-05 23:52:33,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:52:33,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445282869] [2020-10-05 23:52:33,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:52:33,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:52:33,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:52:33,621 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445282869] [2020-10-05 23:52:33,621 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:52:33,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-05 23:52:33,622 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652169141] [2020-10-05 23:52:33,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-05 23:52:33,622 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:52:33,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-05 23:52:33,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-05 23:52:33,623 INFO L87 Difference]: Start difference. First operand 704 states and 1796 transitions. Second operand 14 states. [2020-10-05 23:52:35,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:52:35,599 INFO L93 Difference]: Finished difference Result 1088 states and 2765 transitions. [2020-10-05 23:52:35,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-05 23:52:35,599 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 25 [2020-10-05 23:52:35,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:52:35,607 INFO L225 Difference]: With dead ends: 1088 [2020-10-05 23:52:35,608 INFO L226 Difference]: Without dead ends: 1082 [2020-10-05 23:52:35,608 INFO L675 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 [2020-10-05 23:52:35,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1082 states. [2020-10-05 23:52:35,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1082 to 771. [2020-10-05 23:52:35,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 771 states. [2020-10-05 23:52:35,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 1992 transitions. [2020-10-05 23:52:35,633 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 1992 transitions. Word has length 25 [2020-10-05 23:52:35,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:52:35,633 INFO L479 AbstractCegarLoop]: Abstraction has 771 states and 1992 transitions. [2020-10-05 23:52:35,633 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-05 23:52:35,634 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 1992 transitions. [2020-10-05 23:52:35,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-05 23:52:35,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:52:35,636 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] [2020-10-05 23:52:35,637 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-05 23:52:35,637 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-05 23:52:35,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:52:35,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1285072000, now seen corresponding path program 1 times [2020-10-05 23:52:35,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:52:35,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924117018] [2020-10-05 23:52:35,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:52:35,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:52:35,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:52:35,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924117018] [2020-10-05 23:52:35,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:52:35,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-05 23:52:35,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809188962] [2020-10-05 23:52:35,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 23:52:35,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:52:35,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 23:52:35,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2020-10-05 23:52:35,991 INFO L87 Difference]: Start difference. First operand 771 states and 1992 transitions. Second operand 17 states. [2020-10-05 23:52:36,744 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 40 [2020-10-05 23:52:37,225 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 44 [2020-10-05 23:52:38,047 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 40 [2020-10-05 23:52:38,172 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 37 [2020-10-05 23:52:38,346 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2020-10-05 23:52:38,551 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2020-10-05 23:52:39,193 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 47 [2020-10-05 23:52:39,471 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 43 [2020-10-05 23:52:39,606 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 40 [2020-10-05 23:52:40,150 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 51 [2020-10-05 23:52:40,346 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 47 [2020-10-05 23:52:40,522 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 44 [2020-10-05 23:52:41,493 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 42 [2020-10-05 23:52:41,777 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 48 [2020-10-05 23:52:41,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:52:41,879 INFO L93 Difference]: Finished difference Result 1437 states and 3539 transitions. [2020-10-05 23:52:41,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-10-05 23:52:41,880 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 25 [2020-10-05 23:52:41,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:52:41,889 INFO L225 Difference]: With dead ends: 1437 [2020-10-05 23:52:41,890 INFO L226 Difference]: Without dead ends: 1424 [2020-10-05 23:52:41,891 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1144 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=898, Invalid=3524, Unknown=0, NotChecked=0, Total=4422 [2020-10-05 23:52:41,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1424 states. [2020-10-05 23:52:41,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1424 to 872. [2020-10-05 23:52:41,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 872 states. [2020-10-05 23:52:41,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 2245 transitions. [2020-10-05 23:52:41,920 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 2245 transitions. Word has length 25 [2020-10-05 23:52:41,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:52:41,920 INFO L479 AbstractCegarLoop]: Abstraction has 872 states and 2245 transitions. [2020-10-05 23:52:41,920 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 23:52:41,920 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 2245 transitions. [2020-10-05 23:52:41,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-05 23:52:41,923 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:52:41,923 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] [2020-10-05 23:52:41,923 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-05 23:52:41,923 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-05 23:52:41,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:52:41,923 INFO L82 PathProgramCache]: Analyzing trace with hash -421440302, now seen corresponding path program 2 times [2020-10-05 23:52:41,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:52:41,924 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614573248] [2020-10-05 23:52:41,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:52:41,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:52:42,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:52:42,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614573248] [2020-10-05 23:52:42,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:52:42,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-05 23:52:42,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844364966] [2020-10-05 23:52:42,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 23:52:42,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:52:42,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 23:52:42,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2020-10-05 23:52:42,282 INFO L87 Difference]: Start difference. First operand 872 states and 2245 transitions. Second operand 17 states. [2020-10-05 23:52:43,052 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 40 [2020-10-05 23:52:43,207 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 36 [2020-10-05 23:52:43,557 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 44 [2020-10-05 23:52:44,366 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 40 [2020-10-05 23:52:44,674 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2020-10-05 23:52:44,873 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2020-10-05 23:52:45,549 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 47 [2020-10-05 23:52:45,845 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 43 [2020-10-05 23:52:45,979 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 40 [2020-10-05 23:52:46,510 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 51 [2020-10-05 23:52:46,711 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 47 [2020-10-05 23:52:46,891 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 44 [2020-10-05 23:52:48,003 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 42 [2020-10-05 23:52:48,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:52:48,302 INFO L93 Difference]: Finished difference Result 1438 states and 3539 transitions. [2020-10-05 23:52:48,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-10-05 23:52:48,303 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 25 [2020-10-05 23:52:48,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:52:48,312 INFO L225 Difference]: With dead ends: 1438 [2020-10-05 23:52:48,313 INFO L226 Difference]: Without dead ends: 1419 [2020-10-05 23:52:48,314 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1141 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=918, Invalid=3638, Unknown=0, NotChecked=0, Total=4556 [2020-10-05 23:52:48,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1419 states. [2020-10-05 23:52:48,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1419 to 863. [2020-10-05 23:52:48,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 863 states. [2020-10-05 23:52:48,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 863 states to 863 states and 2222 transitions. [2020-10-05 23:52:48,343 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 2222 transitions. Word has length 25 [2020-10-05 23:52:48,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:52:48,344 INFO L479 AbstractCegarLoop]: Abstraction has 863 states and 2222 transitions. [2020-10-05 23:52:48,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 23:52:48,344 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 2222 transitions. [2020-10-05 23:52:48,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-05 23:52:48,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:52:48,347 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] [2020-10-05 23:52:48,347 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-05 23:52:48,347 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-05 23:52:48,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:52:48,348 INFO L82 PathProgramCache]: Analyzing trace with hash -1646732586, now seen corresponding path program 3 times [2020-10-05 23:52:48,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:52:48,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252028377] [2020-10-05 23:52:48,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:52:48,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:52:48,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:52:48,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252028377] [2020-10-05 23:52:48,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:52:48,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-05 23:52:48,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732128136] [2020-10-05 23:52:48,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 23:52:48,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:52:48,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 23:52:48,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2020-10-05 23:52:48,746 INFO L87 Difference]: Start difference. First operand 863 states and 2222 transitions. Second operand 17 states. [2020-10-05 23:52:49,509 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2020-10-05 23:52:49,659 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2020-10-05 23:52:49,843 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2020-10-05 23:52:50,033 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2020-10-05 23:52:50,269 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2020-10-05 23:52:50,628 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2020-10-05 23:52:50,908 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2020-10-05 23:52:51,108 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2020-10-05 23:52:51,294 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2020-10-05 23:52:51,510 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2020-10-05 23:52:51,810 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2020-10-05 23:52:52,017 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2020-10-05 23:52:52,253 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2020-10-05 23:52:52,455 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2020-10-05 23:52:52,694 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2020-10-05 23:52:52,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:52:52,752 INFO L93 Difference]: Finished difference Result 1720 states and 4208 transitions. [2020-10-05 23:52:52,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-05 23:52:52,753 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 25 [2020-10-05 23:52:52,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:52:52,761 INFO L225 Difference]: With dead ends: 1720 [2020-10-05 23:52:52,761 INFO L226 Difference]: Without dead ends: 1702 [2020-10-05 23:52:52,762 INFO L675 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 [2020-10-05 23:52:52,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2020-10-05 23:52:52,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 940. [2020-10-05 23:52:52,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 940 states. [2020-10-05 23:52:52,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 2409 transitions. [2020-10-05 23:52:52,792 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 2409 transitions. Word has length 25 [2020-10-05 23:52:52,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:52:52,792 INFO L479 AbstractCegarLoop]: Abstraction has 940 states and 2409 transitions. [2020-10-05 23:52:52,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 23:52:52,792 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 2409 transitions. [2020-10-05 23:52:52,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-05 23:52:52,795 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:52:52,795 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] [2020-10-05 23:52:52,795 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-05 23:52:52,795 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-05 23:52:52,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:52:52,796 INFO L82 PathProgramCache]: Analyzing trace with hash 1982583190, now seen corresponding path program 3 times [2020-10-05 23:52:52,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:52:52,796 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601207121] [2020-10-05 23:52:52,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:52:52,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:52:53,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:52:53,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601207121] [2020-10-05 23:52:53,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:52:53,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-05 23:52:53,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359331597] [2020-10-05 23:52:53,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:52:53,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:52:53,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:52:53,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:52:53,435 INFO L87 Difference]: Start difference. First operand 940 states and 2409 transitions. Second operand 15 states. [2020-10-05 23:52:53,686 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 33 [2020-10-05 23:52:53,860 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2020-10-05 23:52:54,157 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 48 [2020-10-05 23:52:54,375 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2020-10-05 23:52:54,719 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2020-10-05 23:52:55,017 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2020-10-05 23:52:55,467 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2020-10-05 23:52:56,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:52:56,351 INFO L93 Difference]: Finished difference Result 1246 states and 3165 transitions. [2020-10-05 23:52:56,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-05 23:52:56,352 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 25 [2020-10-05 23:52:56,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:52:56,359 INFO L225 Difference]: With dead ends: 1246 [2020-10-05 23:52:56,359 INFO L226 Difference]: Without dead ends: 1230 [2020-10-05 23:52:56,360 INFO L675 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 [2020-10-05 23:52:56,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1230 states. [2020-10-05 23:52:56,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1230 to 1050. [2020-10-05 23:52:56,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1050 states. [2020-10-05 23:52:56,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1050 states to 1050 states and 2751 transitions. [2020-10-05 23:52:56,386 INFO L78 Accepts]: Start accepts. Automaton has 1050 states and 2751 transitions. Word has length 25 [2020-10-05 23:52:56,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:52:56,386 INFO L479 AbstractCegarLoop]: Abstraction has 1050 states and 2751 transitions. [2020-10-05 23:52:56,386 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:52:56,386 INFO L276 IsEmpty]: Start isEmpty. Operand 1050 states and 2751 transitions. [2020-10-05 23:52:56,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-05 23:52:56,389 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:52:56,389 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] [2020-10-05 23:52:56,389 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-05 23:52:56,389 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-05 23:52:56,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:52:56,390 INFO L82 PathProgramCache]: Analyzing trace with hash -1689584038, now seen corresponding path program 2 times [2020-10-05 23:52:56,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:52:56,390 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496962981] [2020-10-05 23:52:56,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:52:56,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-05 23:52:56,405 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-05 23:52:56,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-05 23:52:56,419 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-05 23:52:56,445 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-05 23:52:56,445 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-05 23:52:56,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-05 23:52:56,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.10 11:52:56 BasicIcfg [2020-10-05 23:52:56,497 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-05 23:52:56,499 INFO L168 Benchmark]: Toolchain (without parser) took 37047.28 ms. Allocated memory was 145.2 MB in the beginning and 456.1 MB in the end (delta: 310.9 MB). Free memory was 101.7 MB in the beginning and 166.5 MB in the end (delta: -64.8 MB). Peak memory consumption was 246.1 MB. Max. memory is 7.1 GB. [2020-10-05 23:52:56,500 INFO L168 Benchmark]: CDTParser took 0.47 ms. Allocated memory is still 145.2 MB. Free memory was 122.3 MB in the beginning and 122.1 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-10-05 23:52:56,500 INFO L168 Benchmark]: CACSL2BoogieTranslator took 328.10 ms. Allocated memory was 145.2 MB in the beginning and 204.5 MB in the end (delta: 59.2 MB). Free memory was 101.5 MB in the beginning and 181.3 MB in the end (delta: -79.8 MB). Peak memory consumption was 18.0 MB. Max. memory is 7.1 GB. [2020-10-05 23:52:56,501 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.15 ms. Allocated memory is still 204.5 MB. Free memory was 181.3 MB in the beginning and 180.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-05 23:52:56,502 INFO L168 Benchmark]: Boogie Preprocessor took 29.63 ms. Allocated memory is still 204.5 MB. Free memory was 180.0 MB in the beginning and 178.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-05 23:52:56,502 INFO L168 Benchmark]: RCFGBuilder took 318.79 ms. Allocated memory is still 204.5 MB. Free memory was 178.7 MB in the beginning and 160.6 MB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 7.1 GB. [2020-10-05 23:52:56,503 INFO L168 Benchmark]: TraceAbstraction took 36329.07 ms. Allocated memory was 204.5 MB in the beginning and 456.1 MB in the end (delta: 251.7 MB). Free memory was 160.6 MB in the beginning and 166.5 MB in the end (delta: -5.8 MB). Peak memory consumption was 245.8 MB. Max. memory is 7.1 GB. [2020-10-05 23:52:56,506 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47 ms. Allocated memory is still 145.2 MB. Free memory was 122.3 MB in the beginning and 122.1 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 328.10 ms. Allocated memory was 145.2 MB in the beginning and 204.5 MB in the end (delta: 59.2 MB). Free memory was 101.5 MB in the beginning and 181.3 MB in the end (delta: -79.8 MB). Peak memory consumption was 18.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 36.15 ms. Allocated memory is still 204.5 MB. Free memory was 181.3 MB in the beginning and 180.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.63 ms. Allocated memory is still 204.5 MB. Free memory was 180.0 MB in the beginning and 178.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 318.79 ms. Allocated memory is still 204.5 MB. Free memory was 178.7 MB in the beginning and 160.6 MB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 36329.07 ms. Allocated memory was 204.5 MB in the beginning and 456.1 MB in the end (delta: 251.7 MB). Free memory was 160.6 MB in the beginning and 166.5 MB in the end (delta: -5.8 MB). Peak memory consumption was 245.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.4s, 81 ProgramPointsBefore, 39 ProgramPointsAfterwards, 77 TransitionsBefore, 35 TransitionsAfterwards, 1008 CoEnabledTransitionPairs, 6 FixpointIterations, 25 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 494 VarBasedMoverChecksPositive, 21 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 1623 CheckedPairsTotal, 43 TotalNumberOfCompositions - 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: 36.1s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 29.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 458 SDtfs, 2639 SDslu, 2851 SDs, 0 SdLazy, 8096 SolverSat, 534 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 384 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 375 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3983 ImplicationChecksByTransitivity, 24.5s 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...