/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-ext/16_peterson.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-1d1d2b5 [2020-10-21 21:38:29,416 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-21 21:38:29,419 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-21 21:38:29,443 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-21 21:38:29,452 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-21 21:38:29,453 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-21 21:38:29,454 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-21 21:38:29,455 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-21 21:38:29,456 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-21 21:38:29,457 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-21 21:38:29,459 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-21 21:38:29,461 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-21 21:38:29,462 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-21 21:38:29,463 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-21 21:38:29,464 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-21 21:38:29,465 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-21 21:38:29,467 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-21 21:38:29,475 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-21 21:38:29,476 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-21 21:38:29,476 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-21 21:38:29,477 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-21 21:38:29,500 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-21 21:38:29,501 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-21 21:38:29,502 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-21 21:38:29,502 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-21 21:38:29,502 INFO L138 SettingsManager]: * Use SBE=true [2020-10-21 21:38:29,502 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-21 21:38:29,503 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-21 21:38:29,503 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-21 21:38:29,503 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-21 21:38:29,503 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-21 21:38:29,503 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-21 21:38:29,504 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-21 21:38:29,504 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-21 21:38:29,504 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-21 21:38:29,504 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-21 21:38:29,504 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-21 21:38:29,504 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-21 21:38:29,505 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-21 21:38:29,505 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-21 21:38:29,505 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-21 21:38:29,505 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-21 21:38:29,505 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-21 21:38:29,506 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-21 21:38:29,506 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-21 21:38:29,506 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-21 21:38:29,506 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-21 21:38:29,506 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-21 21:38:29,507 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-21 21:38:29,507 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-21 21:38:29,507 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-21 21:38:29,880 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-21 21:38:29,896 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-21 21:38:29,901 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-21 21:38:29,902 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-21 21:38:29,903 INFO L275 PluginConnector]: CDTParser initialized [2020-10-21 21:38:29,903 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/16_peterson.i [2020-10-21 21:38:29,982 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b87402d5f/975cde94b52841aebb4edc78a407fee3/FLAG54297b2cb [2020-10-21 21:38:30,586 INFO L306 CDTParser]: Found 1 translation units. [2020-10-21 21:38:30,586 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/16_peterson.i [2020-10-21 21:38:30,601 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b87402d5f/975cde94b52841aebb4edc78a407fee3/FLAG54297b2cb [2020-10-21 21:38:30,825 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b87402d5f/975cde94b52841aebb4edc78a407fee3 [2020-10-21 21:38:30,836 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-21 21:38:30,843 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-21 21:38:30,845 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-21 21:38:30,845 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-21 21:38:30,848 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-21 21:38:30,850 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 09:38:30" (1/1) ... [2020-10-21 21:38:30,852 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@600959a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:38:30, skipping insertion in model container [2020-10-21 21:38:30,853 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 09:38:30" (1/1) ... [2020-10-21 21:38:30,861 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-21 21:38:30,900 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-21 21:38:31,197 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-10-21 21:38:31,388 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-21 21:38:31,399 INFO L203 MainTranslator]: Completed pre-run [2020-10-21 21:38:31,418 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-10-21 21:38:31,442 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-21 21:38:31,541 INFO L208 MainTranslator]: Completed translation [2020-10-21 21:38:31,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:38:31 WrapperNode [2020-10-21 21:38:31,543 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-21 21:38:31,544 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-21 21:38:31,546 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-21 21:38:31,546 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-21 21:38:31,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:38:31" (1/1) ... [2020-10-21 21:38:31,592 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:38:31" (1/1) ... [2020-10-21 21:38:31,623 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-21 21:38:31,623 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-21 21:38:31,623 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-21 21:38:31,623 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-21 21:38:31,630 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:38:31" (1/1) ... [2020-10-21 21:38:31,631 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:38:31" (1/1) ... [2020-10-21 21:38:31,633 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:38:31" (1/1) ... [2020-10-21 21:38:31,634 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:38:31" (1/1) ... [2020-10-21 21:38:31,640 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:38:31" (1/1) ... [2020-10-21 21:38:31,645 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:38:31" (1/1) ... [2020-10-21 21:38:31,647 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:38:31" (1/1) ... [2020-10-21 21:38:31,650 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-21 21:38:31,651 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-21 21:38:31,651 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-21 21:38:31,651 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-21 21:38:31,652 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:38:31" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-21 21:38:31,714 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-21 21:38:31,714 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-21 21:38:31,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-21 21:38:31,715 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-21 21:38:31,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-21 21:38:31,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-21 21:38:31,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-21 21:38:31,716 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-21 21:38:31,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-21 21:38:31,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-21 21:38:31,718 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-21 21:38:32,043 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-21 21:38:32,043 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-10-21 21:38:32,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 09:38:32 BoogieIcfgContainer [2020-10-21 21:38:32,047 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-21 21:38:32,048 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-21 21:38:32,049 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-21 21:38:32,053 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-21 21:38:32,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 09:38:30" (1/3) ... [2020-10-21 21:38:32,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12d949e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 09:38:32, skipping insertion in model container [2020-10-21 21:38:32,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:38:31" (2/3) ... [2020-10-21 21:38:32,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12d949e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 09:38:32, skipping insertion in model container [2020-10-21 21:38:32,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 09:38:32" (3/3) ... [2020-10-21 21:38:32,057 INFO L111 eAbstractionObserver]: Analyzing ICFG 16_peterson.i [2020-10-21 21:38:32,071 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-21 21:38:32,071 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-21 21:38:32,079 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-21 21:38:32,080 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-21 21:38:32,110 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:38:32,110 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:38:32,110 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:38:32,111 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:38:32,112 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:38:32,112 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:38:32,112 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:38:32,113 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:38:32,113 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:38:32,113 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:38:32,114 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:38:32,114 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:38:32,115 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:38:32,115 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:38:32,116 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:38:32,116 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:38:32,120 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:38:32,120 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:38:32,120 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:38:32,121 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:38:32,121 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:38:32,121 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:38:32,121 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:38:32,122 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:38:32,127 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-21 21:38:32,142 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-21 21:38:32,175 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-21 21:38:32,175 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-21 21:38:32,176 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-21 21:38:32,176 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-21 21:38:32,176 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-21 21:38:32,176 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-21 21:38:32,176 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-21 21:38:32,177 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-21 21:38:32,197 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-21 21:38:32,200 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 65 places, 69 transitions, 143 flow [2020-10-21 21:38:32,202 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 65 places, 69 transitions, 143 flow [2020-10-21 21:38:32,204 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 65 places, 69 transitions, 143 flow [2020-10-21 21:38:32,247 INFO L129 PetriNetUnfolder]: 8/68 cut-off events. [2020-10-21 21:38:32,247 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-21 21:38:32,253 INFO L80 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 68 events. 8/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 73 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2020-10-21 21:38:32,257 INFO L116 LiptonReduction]: Number of co-enabled transitions 1302 [2020-10-21 21:38:33,288 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-10-21 21:38:33,610 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2020-10-21 21:38:33,722 INFO L131 LiptonReduction]: Checked pairs total: 2472 [2020-10-21 21:38:33,723 INFO L133 LiptonReduction]: Total number of compositions: 65 [2020-10-21 21:38:33,730 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 23 places, 22 transitions, 49 flow [2020-10-21 21:38:33,747 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 83 states. [2020-10-21 21:38:33,750 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states. [2020-10-21 21:38:33,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-21 21:38:33,760 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:38:33,761 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:38:33,761 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:38:33,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:38:33,768 INFO L82 PathProgramCache]: Analyzing trace with hash -662943443, now seen corresponding path program 1 times [2020-10-21 21:38:33,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:38:33,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490449402] [2020-10-21 21:38:33,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:38:33,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:38:33,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:38:33,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490449402] [2020-10-21 21:38:33,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 21:38:33,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-21 21:38:33,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926762341] [2020-10-21 21:38:33,995 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 21:38:33,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:38:34,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 21:38:34,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 21:38:34,012 INFO L87 Difference]: Start difference. First operand 83 states. Second operand 3 states. [2020-10-21 21:38:34,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:38:34,051 INFO L93 Difference]: Finished difference Result 90 states and 162 transitions. [2020-10-21 21:38:34,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 21:38:34,053 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-21 21:38:34,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:38:34,065 INFO L225 Difference]: With dead ends: 90 [2020-10-21 21:38:34,065 INFO L226 Difference]: Without dead ends: 70 [2020-10-21 21:38:34,067 INFO L677 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 [2020-10-21 21:38:34,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-21 21:38:34,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 66. [2020-10-21 21:38:34,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-21 21:38:34,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 123 transitions. [2020-10-21 21:38:34,111 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 123 transitions. Word has length 8 [2020-10-21 21:38:34,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:38:34,112 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 123 transitions. [2020-10-21 21:38:34,112 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 21:38:34,113 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 123 transitions. [2020-10-21 21:38:34,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-21 21:38:34,114 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:38:34,114 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:38:34,114 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-21 21:38:34,114 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:38:34,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:38:34,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1913374552, now seen corresponding path program 1 times [2020-10-21 21:38:34,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:38:34,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304885176] [2020-10-21 21:38:34,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:38:34,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:38:34,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:38:34,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304885176] [2020-10-21 21:38:34,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 21:38:34,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-21 21:38:34,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122172199] [2020-10-21 21:38:34,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 21:38:34,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:38:34,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 21:38:34,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 21:38:34,192 INFO L87 Difference]: Start difference. First operand 66 states and 123 transitions. Second operand 3 states. [2020-10-21 21:38:34,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:38:34,211 INFO L93 Difference]: Finished difference Result 61 states and 109 transitions. [2020-10-21 21:38:34,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 21:38:34,212 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-21 21:38:34,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:38:34,213 INFO L225 Difference]: With dead ends: 61 [2020-10-21 21:38:34,213 INFO L226 Difference]: Without dead ends: 49 [2020-10-21 21:38:34,214 INFO L677 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 [2020-10-21 21:38:34,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-21 21:38:34,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-10-21 21:38:34,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-21 21:38:34,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 86 transitions. [2020-10-21 21:38:34,222 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 86 transitions. Word has length 8 [2020-10-21 21:38:34,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:38:34,223 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 86 transitions. [2020-10-21 21:38:34,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 21:38:34,223 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 86 transitions. [2020-10-21 21:38:34,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 21:38:34,224 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:38:34,224 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:38:34,224 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-21 21:38:34,225 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:38:34,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:38:34,225 INFO L82 PathProgramCache]: Analyzing trace with hash 2146806176, now seen corresponding path program 1 times [2020-10-21 21:38:34,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:38:34,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369999065] [2020-10-21 21:38:34,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:38:34,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:38:34,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:38:34,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369999065] [2020-10-21 21:38:34,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 21:38:34,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-21 21:38:34,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075506941] [2020-10-21 21:38:34,329 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-21 21:38:34,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:38:34,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-21 21:38:34,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-21 21:38:34,330 INFO L87 Difference]: Start difference. First operand 49 states and 86 transitions. Second operand 6 states. [2020-10-21 21:38:34,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:38:34,442 INFO L93 Difference]: Finished difference Result 70 states and 128 transitions. [2020-10-21 21:38:34,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-21 21:38:34,442 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-10-21 21:38:34,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:38:34,444 INFO L225 Difference]: With dead ends: 70 [2020-10-21 21:38:34,444 INFO L226 Difference]: Without dead ends: 43 [2020-10-21 21:38:34,444 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-21 21:38:34,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-21 21:38:34,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-10-21 21:38:34,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-21 21:38:34,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 65 transitions. [2020-10-21 21:38:34,451 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 65 transitions. Word has length 13 [2020-10-21 21:38:34,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:38:34,451 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 65 transitions. [2020-10-21 21:38:34,451 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-21 21:38:34,451 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 65 transitions. [2020-10-21 21:38:34,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 21:38:34,452 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:38:34,452 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:38:34,452 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-21 21:38:34,453 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:38:34,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:38:34,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1089995366, now seen corresponding path program 2 times [2020-10-21 21:38:34,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:38:34,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112025994] [2020-10-21 21:38:34,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:38:34,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:38:34,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:38:34,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112025994] [2020-10-21 21:38:34,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 21:38:34,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-21 21:38:34,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778416621] [2020-10-21 21:38:34,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-21 21:38:34,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:38:34,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-21 21:38:34,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-21 21:38:34,520 INFO L87 Difference]: Start difference. First operand 43 states and 65 transitions. Second operand 6 states. [2020-10-21 21:38:34,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:38:34,567 INFO L93 Difference]: Finished difference Result 28 states and 46 transitions. [2020-10-21 21:38:34,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 21:38:34,568 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-10-21 21:38:34,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:38:34,568 INFO L225 Difference]: With dead ends: 28 [2020-10-21 21:38:34,569 INFO L226 Difference]: Without dead ends: 0 [2020-10-21 21:38:34,569 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-21 21:38:34,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-21 21:38:34,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-21 21:38:34,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-21 21:38:34,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-21 21:38:34,570 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-10-21 21:38:34,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:38:34,570 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-21 21:38:34,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-21 21:38:34,571 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-21 21:38:34,571 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-21 21:38:34,571 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-21 21:38:34,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 09:38:34 BasicIcfg [2020-10-21 21:38:34,575 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-21 21:38:34,577 INFO L168 Benchmark]: Toolchain (without parser) took 3739.77 ms. Allocated memory was 147.3 MB in the beginning and 245.9 MB in the end (delta: 98.6 MB). Free memory was 102.3 MB in the beginning and 117.5 MB in the end (delta: -15.2 MB). Peak memory consumption was 83.3 MB. Max. memory is 7.1 GB. [2020-10-21 21:38:34,578 INFO L168 Benchmark]: CDTParser took 3.31 ms. Allocated memory is still 147.3 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-10-21 21:38:34,579 INFO L168 Benchmark]: CACSL2BoogieTranslator took 698.40 ms. Allocated memory was 147.3 MB in the beginning and 201.3 MB in the end (delta: 54.0 MB). Free memory was 101.2 MB in the beginning and 156.5 MB in the end (delta: -55.3 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. [2020-10-21 21:38:34,580 INFO L168 Benchmark]: Boogie Procedure Inliner took 78.63 ms. Allocated memory is still 201.3 MB. Free memory was 156.5 MB in the beginning and 154.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-21 21:38:34,581 INFO L168 Benchmark]: Boogie Preprocessor took 27.55 ms. Allocated memory is still 201.3 MB. Free memory was 154.5 MB in the beginning and 152.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-21 21:38:34,582 INFO L168 Benchmark]: RCFGBuilder took 395.98 ms. Allocated memory is still 201.3 MB. Free memory was 152.6 MB in the beginning and 130.9 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. [2020-10-21 21:38:34,583 INFO L168 Benchmark]: TraceAbstraction took 2526.89 ms. Allocated memory was 201.3 MB in the beginning and 245.9 MB in the end (delta: 44.6 MB). Free memory was 130.2 MB in the beginning and 117.5 MB in the end (delta: 12.7 MB). Peak memory consumption was 57.3 MB. Max. memory is 7.1 GB. [2020-10-21 21:38:34,587 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 3.31 ms. Allocated memory is still 147.3 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 698.40 ms. Allocated memory was 147.3 MB in the beginning and 201.3 MB in the end (delta: 54.0 MB). Free memory was 101.2 MB in the beginning and 156.5 MB in the end (delta: -55.3 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 78.63 ms. Allocated memory is still 201.3 MB. Free memory was 156.5 MB in the beginning and 154.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.55 ms. Allocated memory is still 201.3 MB. Free memory was 154.5 MB in the beginning and 152.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 395.98 ms. Allocated memory is still 201.3 MB. Free memory was 152.6 MB in the beginning and 130.9 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2526.89 ms. Allocated memory was 201.3 MB in the beginning and 245.9 MB in the end (delta: 44.6 MB). Free memory was 130.2 MB in the beginning and 117.5 MB in the end (delta: 12.7 MB). Peak memory consumption was 57.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 913 VarBasedMoverChecksPositive, 45 VarBasedMoverChecksNegative, 13 SemBasedMoverChecksPositive, 32 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 81 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.5s, 65 PlacesBefore, 23 PlacesAfterwards, 69 TransitionsBefore, 22 TransitionsAfterwards, 1302 CoEnabledTransitionPairs, 5 FixpointIterations, 14 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 5 ChoiceCompositions, 65 TotalNumberOfCompositions, 2472 MoverChecksTotal - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 12]: 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, 62 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.3s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 104 SDtfs, 77 SDslu, 109 SDs, 0 SdLazy, 93 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=83occurred 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, 4 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 38 ConstructedInterpolants, 0 QuantifiedInterpolants, 1110 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...