/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-wmm/safe035_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-bf4350c [2020-09-17 01:27:38,963 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-17 01:27:38,966 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-17 01:27:38,993 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-17 01:27:38,993 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-17 01:27:38,995 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-17 01:27:38,996 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-17 01:27:38,998 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-17 01:27:39,000 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-17 01:27:39,001 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-17 01:27:39,002 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-17 01:27:39,003 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-17 01:27:39,003 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-17 01:27:39,004 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-17 01:27:39,005 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-17 01:27:39,006 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-17 01:27:39,007 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-17 01:27:39,008 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-17 01:27:39,010 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-17 01:27:39,012 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-17 01:27:39,014 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-17 01:27:39,016 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-17 01:27:39,017 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-17 01:27:39,018 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-17 01:27:39,021 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-17 01:27:39,024 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-17 01:27:39,025 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-17 01:27:39,026 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-17 01:27:39,027 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-17 01:27:39,028 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-17 01:27:39,029 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-17 01:27:39,029 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-17 01:27:39,030 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-17 01:27:39,030 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-17 01:27:39,031 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-17 01:27:39,032 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-17 01:27:39,033 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 [2020-09-17 01:27:39,077 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-17 01:27:39,078 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-17 01:27:39,080 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-17 01:27:39,080 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-17 01:27:39,080 INFO L138 SettingsManager]: * Use SBE=true [2020-09-17 01:27:39,081 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-17 01:27:39,081 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-17 01:27:39,081 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-17 01:27:39,081 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-17 01:27:39,082 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-17 01:27:39,082 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-17 01:27:39,083 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-17 01:27:39,083 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-17 01:27:39,083 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-17 01:27:39,084 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-17 01:27:39,084 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-17 01:27:39,084 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-17 01:27:39,084 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-17 01:27:39,085 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-17 01:27:39,085 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-17 01:27:39,085 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-17 01:27:39,085 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-17 01:27:39,086 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-17 01:27:39,086 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-17 01:27:39,086 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-17 01:27:39,086 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-17 01:27:39,086 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-17 01:27:39,087 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-17 01:27:39,087 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-17 01:27:39,087 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-17 01:27:39,571 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-17 01:27:39,598 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-17 01:27:39,604 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-17 01:27:39,607 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-17 01:27:39,607 INFO L275 PluginConnector]: CDTParser initialized [2020-09-17 01:27:39,609 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe035_pso.oepc.i [2020-09-17 01:27:39,693 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4b08f31a/160e36eff24544df8f9aad852d1f934a/FLAG3318d39df [2020-09-17 01:27:40,323 INFO L306 CDTParser]: Found 1 translation units. [2020-09-17 01:27:40,327 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_pso.oepc.i [2020-09-17 01:27:40,364 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4b08f31a/160e36eff24544df8f9aad852d1f934a/FLAG3318d39df [2020-09-17 01:27:40,559 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4b08f31a/160e36eff24544df8f9aad852d1f934a [2020-09-17 01:27:40,574 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-17 01:27:40,581 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-17 01:27:40,582 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-17 01:27:40,582 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-17 01:27:40,586 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-17 01:27:40,588 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 01:27:40" (1/1) ... [2020-09-17 01:27:40,592 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f912d48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 01:27:40, skipping insertion in model container [2020-09-17 01:27:40,592 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 01:27:40" (1/1) ... [2020-09-17 01:27:40,601 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-17 01:27:40,652 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-17 01:27:41,254 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-17 01:27:41,269 INFO L203 MainTranslator]: Completed pre-run [2020-09-17 01:27:41,337 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-17 01:27:41,417 INFO L208 MainTranslator]: Completed translation [2020-09-17 01:27:41,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 01:27:41 WrapperNode [2020-09-17 01:27:41,418 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-17 01:27:41,419 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-17 01:27:41,419 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-17 01:27:41,419 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-17 01:27:41,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 01:27:41" (1/1) ... [2020-09-17 01:27:41,450 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 01:27:41" (1/1) ... [2020-09-17 01:27:41,478 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-17 01:27:41,478 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-17 01:27:41,478 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-17 01:27:41,478 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-17 01:27:41,490 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 01:27:41" (1/1) ... [2020-09-17 01:27:41,491 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 01:27:41" (1/1) ... [2020-09-17 01:27:41,494 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 01:27:41" (1/1) ... [2020-09-17 01:27:41,495 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 01:27:41" (1/1) ... [2020-09-17 01:27:41,501 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 01:27:41" (1/1) ... [2020-09-17 01:27:41,504 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 01:27:41" (1/1) ... [2020-09-17 01:27:41,507 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 01:27:41" (1/1) ... [2020-09-17 01:27:41,515 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-17 01:27:41,516 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-17 01:27:41,516 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-17 01:27:41,516 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-17 01:27:41,517 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 01:27:41" (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 [2020-09-17 01:27:41,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-17 01:27:41,604 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-17 01:27:41,604 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-17 01:27:41,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-17 01:27:41,605 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-17 01:27:41,605 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-17 01:27:41,605 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-17 01:27:41,605 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-17 01:27:41,605 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-17 01:27:41,606 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-17 01:27:41,606 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-17 01:27:41,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-17 01:27:41,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-17 01:27:41,608 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-17 01:27:42,020 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-17 01:27:42,021 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-17 01:27:42,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 01:27:42 BoogieIcfgContainer [2020-09-17 01:27:42,026 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-17 01:27:42,028 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-17 01:27:42,028 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-17 01:27:42,032 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-17 01:27:42,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.09 01:27:40" (1/3) ... [2020-09-17 01:27:42,033 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21e2770d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 01:27:42, skipping insertion in model container [2020-09-17 01:27:42,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 01:27:41" (2/3) ... [2020-09-17 01:27:42,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21e2770d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 01:27:42, skipping insertion in model container [2020-09-17 01:27:42,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 01:27:42" (3/3) ... [2020-09-17 01:27:42,037 INFO L109 eAbstractionObserver]: Analyzing ICFG safe035_pso.oepc.i [2020-09-17 01:27:42,049 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-17 01:27:42,049 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-17 01:27:42,060 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-17 01:27:42,061 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-17 01:27:42,092 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:27:42,093 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:27:42,093 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:27:42,093 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:27:42,094 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:27:42,094 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:27:42,095 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:27:42,095 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:27:42,095 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:27:42,095 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:27:42,096 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:27:42,096 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:27:42,097 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:27:42,097 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:27:42,097 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:27:42,097 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:27:42,098 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:27:42,098 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:27:42,103 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:27:42,103 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:27:42,104 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:27:42,104 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:27:42,113 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:27:42,113 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:27:42,113 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:27:42,114 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:27:42,116 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:27:42,117 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:27:42,117 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:27:42,117 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:27:42,143 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-17 01:27:42,172 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-17 01:27:42,172 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-17 01:27:42,172 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-17 01:27:42,172 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-17 01:27:42,173 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-17 01:27:42,173 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-17 01:27:42,173 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-17 01:27:42,173 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-17 01:27:42,192 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-09-17 01:27:42,194 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-17 01:27:42,240 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-17 01:27:42,241 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-17 01:27:42,247 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-17 01:27:42,250 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-17 01:27:42,272 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-17 01:27:42,272 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-17 01:27:42,273 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-17 01:27:42,275 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-17 01:27:42,276 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-17 01:27:43,933 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-09-17 01:27:44,270 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2414 [2020-09-17 01:27:44,270 INFO L214 etLargeBlockEncoding]: Total number of compositions: 56 [2020-09-17 01:27:44,275 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-09-17 01:27:44,302 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-09-17 01:27:44,305 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-09-17 01:27:44,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-17 01:27:44,315 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:27:44,316 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:27:44,316 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:27:44,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:27:44,324 INFO L82 PathProgramCache]: Analyzing trace with hash 1626757645, now seen corresponding path program 1 times [2020-09-17 01:27:44,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:27:44,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926611829] [2020-09-17 01:27:44,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:27:44,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:27:44,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 01:27:44,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926611829] [2020-09-17 01:27:44,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:27:44,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-17 01:27:44,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428613772] [2020-09-17 01:27:44,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-17 01:27:44,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:27:44,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-17 01:27:44,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 01:27:44,637 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-09-17 01:27:44,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:27:44,732 INFO L93 Difference]: Finished difference Result 294 states and 849 transitions. [2020-09-17 01:27:44,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-17 01:27:44,736 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-17 01:27:44,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:27:44,767 INFO L225 Difference]: With dead ends: 294 [2020-09-17 01:27:44,767 INFO L226 Difference]: Without dead ends: 230 [2020-09-17 01:27:44,769 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 01:27:44,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-09-17 01:27:44,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2020-09-17 01:27:44,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-09-17 01:27:44,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 641 transitions. [2020-09-17 01:27:44,867 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 641 transitions. Word has length 8 [2020-09-17 01:27:44,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:27:44,868 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 641 transitions. [2020-09-17 01:27:44,869 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-17 01:27:44,869 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 641 transitions. [2020-09-17 01:27:44,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-17 01:27:44,870 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:27:44,870 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:27:44,871 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-17 01:27:44,871 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:27:44,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:27:44,872 INFO L82 PathProgramCache]: Analyzing trace with hash 113122264, now seen corresponding path program 1 times [2020-09-17 01:27:44,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:27:44,872 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158389713] [2020-09-17 01:27:44,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:27:44,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:27:44,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 01:27:44,968 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158389713] [2020-09-17 01:27:44,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:27:44,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-17 01:27:44,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184306641] [2020-09-17 01:27:44,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-17 01:27:44,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:27:44,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-17 01:27:44,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 01:27:44,971 INFO L87 Difference]: Start difference. First operand 230 states and 641 transitions. Second operand 3 states. [2020-09-17 01:27:44,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:27:44,981 INFO L93 Difference]: Finished difference Result 202 states and 544 transitions. [2020-09-17 01:27:44,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-17 01:27:44,982 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-09-17 01:27:44,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:27:44,985 INFO L225 Difference]: With dead ends: 202 [2020-09-17 01:27:44,985 INFO L226 Difference]: Without dead ends: 202 [2020-09-17 01:27:44,986 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 01:27:44,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-09-17 01:27:45,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-09-17 01:27:45,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-09-17 01:27:45,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-09-17 01:27:45,003 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 9 [2020-09-17 01:27:45,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:27:45,004 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-09-17 01:27:45,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-17 01:27:45,004 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-09-17 01:27:45,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-17 01:27:45,006 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:27:45,006 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:27:45,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-17 01:27:45,006 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:27:45,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:27:45,007 INFO L82 PathProgramCache]: Analyzing trace with hash -54559497, now seen corresponding path program 1 times [2020-09-17 01:27:45,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:27:45,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108971694] [2020-09-17 01:27:45,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:27:45,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:27:45,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 01:27:45,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108971694] [2020-09-17 01:27:45,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:27:45,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-17 01:27:45,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028308314] [2020-09-17 01:27:45,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-17 01:27:45,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:27:45,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-17 01:27:45,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 01:27:45,080 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 3 states. [2020-09-17 01:27:45,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:27:45,098 INFO L93 Difference]: Finished difference Result 266 states and 704 transitions. [2020-09-17 01:27:45,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-17 01:27:45,099 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-09-17 01:27:45,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:27:45,102 INFO L225 Difference]: With dead ends: 266 [2020-09-17 01:27:45,102 INFO L226 Difference]: Without dead ends: 140 [2020-09-17 01:27:45,103 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 [2020-09-17 01:27:45,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-09-17 01:27:45,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2020-09-17 01:27:45,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-09-17 01:27:45,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 362 transitions. [2020-09-17 01:27:45,117 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 362 transitions. Word has length 10 [2020-09-17 01:27:45,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:27:45,117 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 362 transitions. [2020-09-17 01:27:45,117 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-17 01:27:45,118 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 362 transitions. [2020-09-17 01:27:45,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-17 01:27:45,119 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:27:45,120 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:27:45,121 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-17 01:27:45,121 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:27:45,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:27:45,121 INFO L82 PathProgramCache]: Analyzing trace with hash -1691362226, now seen corresponding path program 1 times [2020-09-17 01:27:45,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:27:45,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292248604] [2020-09-17 01:27:45,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:27:45,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:27:45,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 01:27:45,282 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292248604] [2020-09-17 01:27:45,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:27:45,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-17 01:27:45,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588933883] [2020-09-17 01:27:45,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-17 01:27:45,284 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:27:45,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-17 01:27:45,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-17 01:27:45,285 INFO L87 Difference]: Start difference. First operand 140 states and 362 transitions. Second operand 4 states. [2020-09-17 01:27:45,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:27:45,358 INFO L93 Difference]: Finished difference Result 165 states and 389 transitions. [2020-09-17 01:27:45,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-17 01:27:45,358 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-09-17 01:27:45,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:27:45,360 INFO L225 Difference]: With dead ends: 165 [2020-09-17 01:27:45,360 INFO L226 Difference]: Without dead ends: 113 [2020-09-17 01:27:45,361 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-17 01:27:45,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-09-17 01:27:45,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2020-09-17 01:27:45,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-09-17 01:27:45,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 257 transitions. [2020-09-17 01:27:45,369 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 257 transitions. Word has length 11 [2020-09-17 01:27:45,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:27:45,370 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 257 transitions. [2020-09-17 01:27:45,370 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-17 01:27:45,370 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 257 transitions. [2020-09-17 01:27:45,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-17 01:27:45,371 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:27:45,371 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:27:45,371 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-17 01:27:45,372 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:27:45,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:27:45,372 INFO L82 PathProgramCache]: Analyzing trace with hash -891715752, now seen corresponding path program 1 times [2020-09-17 01:27:45,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:27:45,373 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041604827] [2020-09-17 01:27:45,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:27:45,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:27:45,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 01:27:45,510 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041604827] [2020-09-17 01:27:45,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:27:45,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 01:27:45,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392534285] [2020-09-17 01:27:45,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 01:27:45,513 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:27:45,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 01:27:45,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 01:27:45,514 INFO L87 Difference]: Start difference. First operand 113 states and 257 transitions. Second operand 5 states. [2020-09-17 01:27:45,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:27:45,577 INFO L93 Difference]: Finished difference Result 111 states and 232 transitions. [2020-09-17 01:27:45,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 01:27:45,581 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-09-17 01:27:45,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:27:45,582 INFO L225 Difference]: With dead ends: 111 [2020-09-17 01:27:45,582 INFO L226 Difference]: Without dead ends: 80 [2020-09-17 01:27:45,582 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-17 01:27:45,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-09-17 01:27:45,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-09-17 01:27:45,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-09-17 01:27:45,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 159 transitions. [2020-09-17 01:27:45,586 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 159 transitions. Word has length 12 [2020-09-17 01:27:45,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:27:45,586 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 159 transitions. [2020-09-17 01:27:45,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 01:27:45,587 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 159 transitions. [2020-09-17 01:27:45,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-17 01:27:45,588 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:27:45,588 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:27:45,588 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-17 01:27:45,588 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:27:45,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:27:45,597 INFO L82 PathProgramCache]: Analyzing trace with hash 2053094164, now seen corresponding path program 1 times [2020-09-17 01:27:45,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:27:45,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509504654] [2020-09-17 01:27:45,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:27:45,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:27:45,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 01:27:45,727 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509504654] [2020-09-17 01:27:45,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:27:45,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-17 01:27:45,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777887968] [2020-09-17 01:27:45,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-17 01:27:45,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:27:45,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-17 01:27:45,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-17 01:27:45,729 INFO L87 Difference]: Start difference. First operand 80 states and 159 transitions. Second operand 6 states. [2020-09-17 01:27:45,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:27:45,798 INFO L93 Difference]: Finished difference Result 75 states and 147 transitions. [2020-09-17 01:27:45,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-17 01:27:45,799 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-09-17 01:27:45,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:27:45,800 INFO L225 Difference]: With dead ends: 75 [2020-09-17 01:27:45,800 INFO L226 Difference]: Without dead ends: 66 [2020-09-17 01:27:45,801 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-17 01:27:45,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-17 01:27:45,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-09-17 01:27:45,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-17 01:27:45,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 131 transitions. [2020-09-17 01:27:45,805 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 131 transitions. Word has length 14 [2020-09-17 01:27:45,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:27:45,805 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 131 transitions. [2020-09-17 01:27:45,805 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-17 01:27:45,805 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 131 transitions. [2020-09-17 01:27:45,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-17 01:27:45,806 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:27:45,807 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:27:45,807 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-17 01:27:45,807 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:27:45,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:27:45,807 INFO L82 PathProgramCache]: Analyzing trace with hash -913032564, now seen corresponding path program 1 times [2020-09-17 01:27:45,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:27:45,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976053608] [2020-09-17 01:27:45,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:27:45,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:27:45,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 01:27:45,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976053608] [2020-09-17 01:27:45,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:27:45,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 01:27:45,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349336159] [2020-09-17 01:27:45,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-17 01:27:45,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:27:45,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-17 01:27:45,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-17 01:27:45,878 INFO L87 Difference]: Start difference. First operand 66 states and 131 transitions. Second operand 4 states. [2020-09-17 01:27:45,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:27:45,914 INFO L93 Difference]: Finished difference Result 85 states and 165 transitions. [2020-09-17 01:27:45,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-17 01:27:45,914 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-17 01:27:45,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:27:45,915 INFO L225 Difference]: With dead ends: 85 [2020-09-17 01:27:45,915 INFO L226 Difference]: Without dead ends: 48 [2020-09-17 01:27:45,915 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-17 01:27:45,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-17 01:27:45,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-09-17 01:27:45,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-17 01:27:45,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 83 transitions. [2020-09-17 01:27:45,918 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 83 transitions. Word has length 17 [2020-09-17 01:27:45,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:27:45,918 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 83 transitions. [2020-09-17 01:27:45,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-17 01:27:45,918 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 83 transitions. [2020-09-17 01:27:45,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-17 01:27:45,919 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:27:45,919 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:27:45,919 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-17 01:27:45,919 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:27:45,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:27:45,920 INFO L82 PathProgramCache]: Analyzing trace with hash -1376526520, now seen corresponding path program 2 times [2020-09-17 01:27:45,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:27:45,920 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886728356] [2020-09-17 01:27:45,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:27:45,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:27:45,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 01:27:45,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886728356] [2020-09-17 01:27:45,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:27:45,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 01:27:45,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316428818] [2020-09-17 01:27:45,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-17 01:27:45,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:27:45,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-17 01:27:45,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-17 01:27:45,979 INFO L87 Difference]: Start difference. First operand 48 states and 83 transitions. Second operand 4 states. [2020-09-17 01:27:46,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:27:46,000 INFO L93 Difference]: Finished difference Result 73 states and 130 transitions. [2020-09-17 01:27:46,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-17 01:27:46,001 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-17 01:27:46,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:27:46,001 INFO L225 Difference]: With dead ends: 73 [2020-09-17 01:27:46,002 INFO L226 Difference]: Without dead ends: 42 [2020-09-17 01:27:46,002 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-17 01:27:46,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-17 01:27:46,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-17 01:27:46,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-17 01:27:46,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 71 transitions. [2020-09-17 01:27:46,004 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 71 transitions. Word has length 17 [2020-09-17 01:27:46,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:27:46,005 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 71 transitions. [2020-09-17 01:27:46,005 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-17 01:27:46,005 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 71 transitions. [2020-09-17 01:27:46,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-17 01:27:46,006 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:27:46,006 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:27:46,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-17 01:27:46,006 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:27:46,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:27:46,007 INFO L82 PathProgramCache]: Analyzing trace with hash -1323635892, now seen corresponding path program 3 times [2020-09-17 01:27:46,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:27:46,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011822778] [2020-09-17 01:27:46,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:27:46,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:27:46,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 01:27:46,062 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011822778] [2020-09-17 01:27:46,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:27:46,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 01:27:46,063 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477299715] [2020-09-17 01:27:46,064 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-17 01:27:46,064 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:27:46,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-17 01:27:46,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-17 01:27:46,064 INFO L87 Difference]: Start difference. First operand 42 states and 71 transitions. Second operand 4 states. [2020-09-17 01:27:46,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:27:46,075 INFO L93 Difference]: Finished difference Result 41 states and 70 transitions. [2020-09-17 01:27:46,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-17 01:27:46,075 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-17 01:27:46,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:27:46,076 INFO L225 Difference]: With dead ends: 41 [2020-09-17 01:27:46,076 INFO L226 Difference]: Without dead ends: 0 [2020-09-17 01:27:46,077 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-17 01:27:46,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-17 01:27:46,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-17 01:27:46,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-17 01:27:46,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-17 01:27:46,077 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-09-17 01:27:46,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:27:46,078 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-17 01:27:46,078 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-17 01:27:46,078 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-17 01:27:46,078 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-17 01:27:46,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-17 01:27:46,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.09 01:27:46 BasicIcfg [2020-09-17 01:27:46,083 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-17 01:27:46,085 INFO L168 Benchmark]: Toolchain (without parser) took 5509.20 ms. Allocated memory was 139.5 MB in the beginning and 248.0 MB in the end (delta: 108.5 MB). Free memory was 101.5 MB in the beginning and 142.8 MB in the end (delta: -41.3 MB). Peak memory consumption was 67.3 MB. Max. memory is 7.1 GB. [2020-09-17 01:27:46,086 INFO L168 Benchmark]: CDTParser took 0.60 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-17 01:27:46,087 INFO L168 Benchmark]: CACSL2BoogieTranslator took 836.83 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 100.8 MB in the beginning and 157.3 MB in the end (delta: -56.5 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. [2020-09-17 01:27:46,088 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.76 ms. Allocated memory is still 202.4 MB. Free memory was 156.6 MB in the beginning and 154.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-17 01:27:46,089 INFO L168 Benchmark]: Boogie Preprocessor took 37.25 ms. Allocated memory is still 202.4 MB. Free memory was 154.6 MB in the beginning and 153.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-17 01:27:46,090 INFO L168 Benchmark]: RCFGBuilder took 510.64 ms. Allocated memory is still 202.4 MB. Free memory was 153.3 MB in the beginning and 131.0 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-09-17 01:27:46,091 INFO L168 Benchmark]: TraceAbstraction took 4055.53 ms. Allocated memory was 202.4 MB in the beginning and 248.0 MB in the end (delta: 45.6 MB). Free memory was 130.3 MB in the beginning and 142.8 MB in the end (delta: -12.5 MB). Peak memory consumption was 33.2 MB. Max. memory is 7.1 GB. [2020-09-17 01:27:46,095 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.60 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 836.83 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 100.8 MB in the beginning and 157.3 MB in the end (delta: -56.5 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 58.76 ms. Allocated memory is still 202.4 MB. Free memory was 156.6 MB in the beginning and 154.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 37.25 ms. Allocated memory is still 202.4 MB. Free memory was 154.6 MB in the beginning and 153.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 510.64 ms. Allocated memory is still 202.4 MB. Free memory was 153.3 MB in the beginning and 131.0 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4055.53 ms. Allocated memory was 202.4 MB in the beginning and 248.0 MB in the end (delta: 45.6 MB). Free memory was 130.3 MB in the beginning and 142.8 MB in the end (delta: -12.5 MB). Peak memory consumption was 33.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.0s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 21 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 643 VarBasedMoverChecksPositive, 31 VarBasedMoverChecksNegative, 11 SemBasedMoverChecksPositive, 34 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 2414 CheckedPairsTotal, 56 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.9s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 172 SDtfs, 128 SDslu, 202 SDs, 0 SdLazy, 120 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred 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: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 115 NumberOfCodeBlocks, 115 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 106 ConstructedInterpolants, 0 QuantifiedInterpolants, 3276 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...