/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/svcomp/pthread-ext/19_time_var_mutex.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c7e336b [2020-10-05 23:16:59,812 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-05 23:16:59,815 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-05 23:16:59,838 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-05 23:16:59,839 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-05 23:16:59,840 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-05 23:16:59,841 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-05 23:16:59,843 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-05 23:16:59,844 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-05 23:16:59,845 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-05 23:16:59,846 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-05 23:16:59,847 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-05 23:16:59,847 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-05 23:16:59,848 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-05 23:16:59,849 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-05 23:16:59,850 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-05 23:16:59,851 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-05 23:16:59,852 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-05 23:16:59,854 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-05 23:16:59,855 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-05 23:16:59,857 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-05 23:16:59,858 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-05 23:16:59,859 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-05 23:16:59,860 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-05 23:16:59,862 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-05 23:16:59,869 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-05 23:16:59,870 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-05 23:16:59,871 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-05 23:16:59,873 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 23:16:59,918 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-05 23:16:59,921 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-05 23:16:59,922 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-05 23:16:59,922 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-05 23:16:59,923 INFO L138 SettingsManager]: * Use SBE=true [2020-10-05 23:16:59,923 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-05 23:16:59,923 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-05 23:16:59,923 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-05 23:16:59,923 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-05 23:16:59,924 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-05 23:16:59,924 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-05 23:16:59,924 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-05 23:16:59,924 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-05 23:16:59,924 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-05 23:16:59,924 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-05 23:16:59,925 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-05 23:16:59,925 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-05 23:16:59,925 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-05 23:16:59,925 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-05 23:16:59,925 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-05 23:16:59,926 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-05 23:16:59,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-05 23:16:59,928 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-05 23:16:59,928 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-05 23:16:59,928 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-05 23:16:59,928 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-05 23:16:59,928 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-05 23:16:59,929 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-05 23:16:59,929 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-05 23:17:00,245 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-05 23:17:00,265 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-05 23:17:00,269 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-05 23:17:00,270 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-05 23:17:00,270 INFO L275 PluginConnector]: CDTParser initialized [2020-10-05 23:17:00,271 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/19_time_var_mutex.i [2020-10-05 23:17:00,332 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32c3b30ab/25ddd610c614483f849751dd2dc35887/FLAGa4374d3e7 [2020-10-05 23:17:00,856 INFO L306 CDTParser]: Found 1 translation units. [2020-10-05 23:17:00,857 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/19_time_var_mutex.i [2020-10-05 23:17:00,875 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32c3b30ab/25ddd610c614483f849751dd2dc35887/FLAGa4374d3e7 [2020-10-05 23:17:01,188 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32c3b30ab/25ddd610c614483f849751dd2dc35887 [2020-10-05 23:17:01,197 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-05 23:17:01,199 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-05 23:17:01,200 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-05 23:17:01,200 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-05 23:17:01,203 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-05 23:17:01,204 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 11:17:01" (1/1) ... [2020-10-05 23:17:01,207 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65bcf641 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:17:01, skipping insertion in model container [2020-10-05 23:17:01,207 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 11:17:01" (1/1) ... [2020-10-05 23:17:01,215 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-05 23:17:01,257 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-05 23:17:01,693 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-05 23:17:01,705 INFO L203 MainTranslator]: Completed pre-run [2020-10-05 23:17:01,750 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-05 23:17:01,839 INFO L208 MainTranslator]: Completed translation [2020-10-05 23:17:01,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:17:01 WrapperNode [2020-10-05 23:17:01,840 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-05 23:17:01,840 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-05 23:17:01,841 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-05 23:17:01,841 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-05 23:17:01,848 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:17:01" (1/1) ... [2020-10-05 23:17:01,863 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:17:01" (1/1) ... [2020-10-05 23:17:01,890 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-05 23:17:01,891 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-05 23:17:01,891 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-05 23:17:01,891 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-05 23:17:01,901 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:17:01" (1/1) ... [2020-10-05 23:17:01,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:17:01" (1/1) ... [2020-10-05 23:17:01,905 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:17:01" (1/1) ... [2020-10-05 23:17:01,905 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:17:01" (1/1) ... [2020-10-05 23:17:01,912 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:17:01" (1/1) ... [2020-10-05 23:17:01,916 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:17:01" (1/1) ... [2020-10-05 23:17:01,918 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:17:01" (1/1) ... [2020-10-05 23:17:01,922 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-05 23:17:01,922 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-05 23:17:01,922 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-05 23:17:01,923 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-05 23:17:01,923 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:17:01" (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 23:17:01,991 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-05 23:17:01,991 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-05 23:17:01,991 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-05 23:17:01,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-05 23:17:01,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-05 23:17:01,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-05 23:17:01,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-05 23:17:01,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-05 23:17:01,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-05 23:17:01,994 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 23:17:02,867 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-05 23:17:02,867 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-05 23:17:02,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 11:17:02 BoogieIcfgContainer [2020-10-05 23:17:02,870 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-05 23:17:02,871 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-05 23:17:02,871 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-05 23:17:02,874 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-05 23:17:02,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.10 11:17:01" (1/3) ... [2020-10-05 23:17:02,875 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@246eb1f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 11:17:02, skipping insertion in model container [2020-10-05 23:17:02,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:17:01" (2/3) ... [2020-10-05 23:17:02,876 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@246eb1f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 11:17:02, skipping insertion in model container [2020-10-05 23:17:02,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 11:17:02" (3/3) ... [2020-10-05 23:17:02,878 INFO L109 eAbstractionObserver]: Analyzing ICFG 19_time_var_mutex.i [2020-10-05 23:17:02,889 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-05 23:17:02,890 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-05 23:17:02,898 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-05 23:17:02,899 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-05 23:17:02,922 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:17:02,922 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:17:02,923 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:17:02,923 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:17:02,923 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_~m.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:17:02,924 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_~m.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:17:02,924 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_#in~m.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:17:02,924 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:17:02,924 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:17:02,924 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:17:02,924 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_#in~m.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:17:02,925 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_~m.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:17:02,925 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_~m.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:17:02,925 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_#in~m.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:17:02,925 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:17:02,926 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:17:02,926 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:17:02,926 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_#in~m.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:17:02,926 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_release_#in~m.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:17:02,926 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_release_~m.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:17:02,927 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_release_#in~m.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:17:02,927 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_release_~m.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:17:02,927 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:17:02,927 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:17:02,928 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_release_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:17:02,928 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_release_#in~m.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:17:02,928 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_release_~m.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:17:02,928 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_release_#in~m.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:17:02,929 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_release_~m.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:17:02,929 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:17:02,929 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:17:02,929 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_release_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:17:02,929 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:17:02,930 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:17:02,934 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_#in~m.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:17:02,934 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_release_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:17:02,934 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:17:02,934 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:17:02,935 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_release_#in~m.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:17:02,935 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:17:02,935 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:17:02,935 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_#in~m.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:17:02,935 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:17:02,936 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_~m.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:17:02,936 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_release_~m.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:17:02,936 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_~m.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:17:02,936 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_release_#in~m.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:17:02,936 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:17:02,937 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_release_~m.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:17:02,937 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:17:02,952 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-05 23:17:02,973 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-05 23:17:02,973 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-05 23:17:02,974 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-05 23:17:02,974 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-05 23:17:02,974 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-05 23:17:02,974 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-05 23:17:02,974 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-05 23:17:02,974 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-05 23:17:02,989 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 54 places, 54 transitions, 113 flow [2020-10-05 23:17:02,991 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 54 places, 54 transitions, 113 flow [2020-10-05 23:17:03,025 INFO L129 PetriNetUnfolder]: 4/53 cut-off events. [2020-10-05 23:17:03,025 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-05 23:17:03,030 INFO L80 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 53 events. 4/53 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 62 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 38. Up to 3 conditions per place. [2020-10-05 23:17:03,032 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 54 places, 54 transitions, 113 flow [2020-10-05 23:17:03,046 INFO L129 PetriNetUnfolder]: 4/53 cut-off events. [2020-10-05 23:17:03,047 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-05 23:17:03,048 INFO L80 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 53 events. 4/53 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 62 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 38. Up to 3 conditions per place. [2020-10-05 23:17:03,049 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 704 [2020-10-05 23:17:03,050 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-10-05 23:17:04,421 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2020-10-05 23:17:04,486 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2171 [2020-10-05 23:17:04,486 INFO L214 etLargeBlockEncoding]: Total number of compositions: 39 [2020-10-05 23:17:04,490 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 21 transitions, 47 flow [2020-10-05 23:17:04,501 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 74 states. [2020-10-05 23:17:04,503 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-10-05 23:17:04,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-05 23:17:04,522 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:17:04,522 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-05 23:17:04,523 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:17:04,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:17:04,529 INFO L82 PathProgramCache]: Analyzing trace with hash 403413595, now seen corresponding path program 1 times [2020-10-05 23:17:04,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:17:04,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80866838] [2020-10-05 23:17:04,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:17:04,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:17:04,721 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 23:17:04,722 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80866838] [2020-10-05 23:17:04,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:17:04,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 23:17:04,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298291777] [2020-10-05 23:17:04,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 23:17:04,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:17:04,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 23:17:04,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:17:04,747 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 3 states. [2020-10-05 23:17:04,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:17:04,774 INFO L93 Difference]: Finished difference Result 74 states and 138 transitions. [2020-10-05 23:17:04,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 23:17:04,776 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-10-05 23:17:04,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:17:04,787 INFO L225 Difference]: With dead ends: 74 [2020-10-05 23:17:04,787 INFO L226 Difference]: Without dead ends: 68 [2020-10-05 23:17:04,789 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:17:04,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-05 23:17:04,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-10-05 23:17:04,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-05 23:17:04,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 124 transitions. [2020-10-05 23:17:04,833 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 124 transitions. Word has length 5 [2020-10-05 23:17:04,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:17:04,833 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 124 transitions. [2020-10-05 23:17:04,833 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 23:17:04,834 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 124 transitions. [2020-10-05 23:17:04,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-05 23:17:04,834 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:17:04,835 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-05 23:17:04,835 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-05 23:17:04,835 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:17:04,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:17:04,836 INFO L82 PathProgramCache]: Analyzing trace with hash -378762693, now seen corresponding path program 1 times [2020-10-05 23:17:04,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:17:04,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447094464] [2020-10-05 23:17:04,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:17:04,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:17:04,885 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 23:17:04,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447094464] [2020-10-05 23:17:04,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:17:04,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 23:17:04,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574542193] [2020-10-05 23:17:04,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 23:17:04,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:17:04,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 23:17:04,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:17:04,889 INFO L87 Difference]: Start difference. First operand 68 states and 124 transitions. Second operand 3 states. [2020-10-05 23:17:04,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:17:04,938 INFO L93 Difference]: Finished difference Result 66 states and 112 transitions. [2020-10-05 23:17:04,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 23:17:04,946 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-10-05 23:17:04,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:17:04,947 INFO L225 Difference]: With dead ends: 66 [2020-10-05 23:17:04,948 INFO L226 Difference]: Without dead ends: 58 [2020-10-05 23:17:04,949 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:17:04,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-05 23:17:04,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2020-10-05 23:17:04,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-05 23:17:04,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 95 transitions. [2020-10-05 23:17:04,959 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 95 transitions. Word has length 6 [2020-10-05 23:17:04,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:17:04,959 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 95 transitions. [2020-10-05 23:17:04,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 23:17:04,959 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 95 transitions. [2020-10-05 23:17:04,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-05 23:17:04,960 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:17:04,960 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:17:04,961 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-05 23:17:04,961 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:17:04,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:17:04,961 INFO L82 PathProgramCache]: Analyzing trace with hash 778386525, now seen corresponding path program 1 times [2020-10-05 23:17:04,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:17:04,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025790160] [2020-10-05 23:17:04,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:17:04,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:17:05,011 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 23:17:05,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025790160] [2020-10-05 23:17:05,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:17:05,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 23:17:05,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998259610] [2020-10-05 23:17:05,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 23:17:05,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:17:05,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 23:17:05,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:17:05,014 INFO L87 Difference]: Start difference. First operand 54 states and 95 transitions. Second operand 3 states. [2020-10-05 23:17:05,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:17:05,029 INFO L93 Difference]: Finished difference Result 50 states and 82 transitions. [2020-10-05 23:17:05,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 23:17:05,030 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-05 23:17:05,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:17:05,031 INFO L225 Difference]: With dead ends: 50 [2020-10-05 23:17:05,031 INFO L226 Difference]: Without dead ends: 37 [2020-10-05 23:17:05,031 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:17:05,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-05 23:17:05,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-10-05 23:17:05,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-05 23:17:05,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 54 transitions. [2020-10-05 23:17:05,037 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 54 transitions. Word has length 8 [2020-10-05 23:17:05,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:17:05,037 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 54 transitions. [2020-10-05 23:17:05,037 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 23:17:05,037 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 54 transitions. [2020-10-05 23:17:05,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 23:17:05,038 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:17:05,038 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:17:05,038 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-05 23:17:05,039 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:17:05,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:17:05,039 INFO L82 PathProgramCache]: Analyzing trace with hash 537187588, now seen corresponding path program 1 times [2020-10-05 23:17:05,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:17:05,040 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552851265] [2020-10-05 23:17:05,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:17:05,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:17:05,092 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 23:17:05,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552851265] [2020-10-05 23:17:05,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:17:05,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 23:17:05,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780806491] [2020-10-05 23:17:05,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 23:17:05,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:17:05,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 23:17:05,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:17:05,095 INFO L87 Difference]: Start difference. First operand 37 states and 54 transitions. Second operand 3 states. [2020-10-05 23:17:05,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:17:05,102 INFO L93 Difference]: Finished difference Result 37 states and 51 transitions. [2020-10-05 23:17:05,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 23:17:05,102 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-05 23:17:05,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:17:05,103 INFO L225 Difference]: With dead ends: 37 [2020-10-05 23:17:05,103 INFO L226 Difference]: Without dead ends: 31 [2020-10-05 23:17:05,104 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:17:05,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-05 23:17:05,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-05 23:17:05,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-05 23:17:05,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-10-05 23:17:05,108 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2020-10-05 23:17:05,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:17:05,108 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-10-05 23:17:05,108 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 23:17:05,108 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-10-05 23:17:05,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 23:17:05,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:17:05,109 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:17:05,110 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-05 23:17:05,110 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:17:05,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:17:05,110 INFO L82 PathProgramCache]: Analyzing trace with hash 93897508, now seen corresponding path program 2 times [2020-10-05 23:17:05,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:17:05,111 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264376221] [2020-10-05 23:17:05,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:17:05,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:17:05,274 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 23:17:05,275 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264376221] [2020-10-05 23:17:05,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:17:05,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-05 23:17:05,276 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490826906] [2020-10-05 23:17:05,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-05 23:17:05,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:17:05,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-05 23:17:05,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-05 23:17:05,277 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 6 states. [2020-10-05 23:17:05,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:17:05,331 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2020-10-05 23:17:05,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-05 23:17:05,333 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-10-05 23:17:05,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:17:05,333 INFO L225 Difference]: With dead ends: 11 [2020-10-05 23:17:05,334 INFO L226 Difference]: Without dead ends: 0 [2020-10-05 23:17:05,334 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-05 23:17:05,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-05 23:17:05,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-05 23:17:05,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-05 23:17:05,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-05 23:17:05,335 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2020-10-05 23:17:05,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:17:05,335 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-05 23:17:05,336 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-05 23:17:05,336 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-05 23:17:05,336 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-05 23:17:05,336 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-05 23:17:05,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.10 11:17:05 BasicIcfg [2020-10-05 23:17:05,341 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-05 23:17:05,344 INFO L168 Benchmark]: Toolchain (without parser) took 4144.48 ms. Allocated memory was 140.5 MB in the beginning and 248.0 MB in the end (delta: 107.5 MB). Free memory was 102.1 MB in the beginning and 166.5 MB in the end (delta: -64.4 MB). Peak memory consumption was 43.1 MB. Max. memory is 7.1 GB. [2020-10-05 23:17:05,347 INFO L168 Benchmark]: CDTParser took 0.43 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-05 23:17:05,349 INFO L168 Benchmark]: CACSL2BoogieTranslator took 640.46 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 101.9 MB in the beginning and 160.4 MB in the end (delta: -58.5 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. [2020-10-05 23:17:05,355 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.77 ms. Allocated memory is still 203.4 MB. Free memory was 160.4 MB in the beginning and 157.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-10-05 23:17:05,356 INFO L168 Benchmark]: Boogie Preprocessor took 31.41 ms. Allocated memory is still 203.4 MB. Free memory was 157.7 MB in the beginning and 156.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-05 23:17:05,357 INFO L168 Benchmark]: RCFGBuilder took 947.53 ms. Allocated memory was 203.4 MB in the beginning and 237.0 MB in the end (delta: 33.6 MB). Free memory was 156.4 MB in the beginning and 203.0 MB in the end (delta: -46.6 MB). Peak memory consumption was 70.8 MB. Max. memory is 7.1 GB. [2020-10-05 23:17:05,358 INFO L168 Benchmark]: TraceAbstraction took 2470.05 ms. Allocated memory was 237.0 MB in the beginning and 248.0 MB in the end (delta: 11.0 MB). Free memory was 203.0 MB in the beginning and 166.5 MB in the end (delta: 36.5 MB). Peak memory consumption was 47.5 MB. Max. memory is 7.1 GB. [2020-10-05 23:17:05,373 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 640.46 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 101.9 MB in the beginning and 160.4 MB in the end (delta: -58.5 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 49.77 ms. Allocated memory is still 203.4 MB. Free memory was 160.4 MB in the beginning and 157.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 31.41 ms. Allocated memory is still 203.4 MB. Free memory was 157.7 MB in the beginning and 156.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 947.53 ms. Allocated memory was 203.4 MB in the beginning and 237.0 MB in the end (delta: 33.6 MB). Free memory was 156.4 MB in the beginning and 203.0 MB in the end (delta: -46.6 MB). Peak memory consumption was 70.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2470.05 ms. Allocated memory was 237.0 MB in the beginning and 248.0 MB in the end (delta: 11.0 MB). Free memory was 203.0 MB in the beginning and 166.5 MB in the end (delta: 36.5 MB). Peak memory consumption was 47.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.4s, 54 ProgramPointsBefore, 22 ProgramPointsAfterwards, 54 TransitionsBefore, 21 TransitionsAfterwards, 704 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 374 VarBasedMoverChecksPositive, 35 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2171 CheckedPairsTotal, 39 TotalNumberOfCompositions - PositiveResult [Line: 702]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 711]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 51 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.3s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 77 SDtfs, 52 SDslu, 33 SDs, 0 SdLazy, 27 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 608 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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 correct! Received shutdown request...