/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/safe008_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-bf4350c [2020-09-16 23:30:56,940 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-16 23:30:56,945 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-16 23:30:56,984 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-16 23:30:56,984 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-16 23:30:56,995 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-16 23:30:56,997 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-16 23:30:56,999 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-16 23:30:57,001 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-16 23:30:57,002 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-16 23:30:57,004 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-16 23:30:57,005 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-16 23:30:57,005 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-16 23:30:57,006 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-16 23:30:57,008 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-16 23:30:57,009 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-16 23:30:57,010 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-16 23:30:57,011 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-16 23:30:57,013 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-16 23:30:57,014 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-16 23:30:57,016 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-16 23:30:57,017 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-16 23:30:57,019 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-16 23:30:57,020 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-16 23:30:57,022 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-16 23:30:57,022 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-16 23:30:57,023 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-16 23:30:57,023 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-16 23:30:57,024 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-16 23:30:57,025 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-16 23:30:57,025 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-16 23:30:57,026 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-16 23:30:57,027 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-16 23:30:57,028 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-16 23:30:57,029 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-16 23:30:57,029 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-16 23:30:57,030 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-16 23:30:57,030 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-16 23:30:57,030 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-16 23:30:57,031 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-16 23:30:57,032 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-16 23:30:57,033 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 [2020-09-16 23:30:57,060 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-16 23:30:57,060 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-16 23:30:57,061 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-16 23:30:57,062 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-16 23:30:57,062 INFO L138 SettingsManager]: * Use SBE=true [2020-09-16 23:30:57,062 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-16 23:30:57,062 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-16 23:30:57,062 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-16 23:30:57,063 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-16 23:30:57,063 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-16 23:30:57,063 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-16 23:30:57,063 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-16 23:30:57,063 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-16 23:30:57,064 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-16 23:30:57,064 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-16 23:30:57,064 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-16 23:30:57,064 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-16 23:30:57,064 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-16 23:30:57,065 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-16 23:30:57,065 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-16 23:30:57,065 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-16 23:30:57,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-16 23:30:57,065 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-16 23:30:57,066 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-16 23:30:57,066 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-16 23:30:57,066 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-16 23:30:57,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-16 23:30:57,066 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-16 23:30:57,067 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-16 23:30:57,067 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-16 23:30:57,501 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-16 23:30:57,525 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-16 23:30:57,531 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-16 23:30:57,533 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-16 23:30:57,534 INFO L275 PluginConnector]: CDTParser initialized [2020-09-16 23:30:57,535 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe008_tso.oepc.i [2020-09-16 23:30:57,623 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/949b8d30f/ae48260835914827a615232be704cb81/FLAG8878be4ab [2020-09-16 23:30:58,219 INFO L306 CDTParser]: Found 1 translation units. [2020-09-16 23:30:58,220 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe008_tso.oepc.i [2020-09-16 23:30:58,237 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/949b8d30f/ae48260835914827a615232be704cb81/FLAG8878be4ab [2020-09-16 23:30:58,482 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/949b8d30f/ae48260835914827a615232be704cb81 [2020-09-16 23:30:58,495 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-16 23:30:58,501 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-16 23:30:58,502 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-16 23:30:58,502 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-16 23:30:58,507 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-16 23:30:58,508 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:30:58" (1/1) ... [2020-09-16 23:30:58,513 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cd2411b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:30:58, skipping insertion in model container [2020-09-16 23:30:58,513 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:30:58" (1/1) ... [2020-09-16 23:30:58,522 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-16 23:30:58,574 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-16 23:30:59,092 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-16 23:30:59,114 INFO L203 MainTranslator]: Completed pre-run [2020-09-16 23:30:59,193 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-16 23:30:59,288 INFO L208 MainTranslator]: Completed translation [2020-09-16 23:30:59,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:30:59 WrapperNode [2020-09-16 23:30:59,289 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-16 23:30:59,291 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-16 23:30:59,291 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-16 23:30:59,291 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-16 23:30:59,301 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:30:59" (1/1) ... [2020-09-16 23:30:59,321 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:30:59" (1/1) ... [2020-09-16 23:30:59,348 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-16 23:30:59,349 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-16 23:30:59,349 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-16 23:30:59,349 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-16 23:30:59,361 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:30:59" (1/1) ... [2020-09-16 23:30:59,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:30:59" (1/1) ... [2020-09-16 23:30:59,364 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:30:59" (1/1) ... [2020-09-16 23:30:59,364 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:30:59" (1/1) ... [2020-09-16 23:30:59,371 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:30:59" (1/1) ... [2020-09-16 23:30:59,374 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:30:59" (1/1) ... [2020-09-16 23:30:59,376 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:30:59" (1/1) ... [2020-09-16 23:30:59,381 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-16 23:30:59,382 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-16 23:30:59,382 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-16 23:30:59,382 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-16 23:30:59,383 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:30:59" (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 [2020-09-16 23:30:59,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-16 23:30:59,468 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-16 23:30:59,468 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-16 23:30:59,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-16 23:30:59,469 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-16 23:30:59,469 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-16 23:30:59,469 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-16 23:30:59,470 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-16 23:30:59,471 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-16 23:30:59,471 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-16 23:30:59,472 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-16 23:30:59,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-16 23:30:59,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-16 23:30:59,475 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-16 23:30:59,870 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-16 23:30:59,871 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-16 23:30:59,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:30:59 BoogieIcfgContainer [2020-09-16 23:30:59,876 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-16 23:30:59,877 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-16 23:30:59,878 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-16 23:30:59,881 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-16 23:30:59,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:30:58" (1/3) ... [2020-09-16 23:30:59,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36db52a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:30:59, skipping insertion in model container [2020-09-16 23:30:59,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:30:59" (2/3) ... [2020-09-16 23:30:59,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36db52a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:30:59, skipping insertion in model container [2020-09-16 23:30:59,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:30:59" (3/3) ... [2020-09-16 23:30:59,885 INFO L109 eAbstractionObserver]: Analyzing ICFG safe008_tso.oepc.i [2020-09-16 23:30:59,896 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-16 23:30:59,896 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-16 23:30:59,906 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-16 23:30:59,907 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-16 23:30:59,936 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:30:59,936 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:30:59,937 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:30:59,937 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:30:59,938 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:30:59,938 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:30:59,938 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:30:59,939 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:30:59,939 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:30:59,939 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:30:59,939 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:30:59,940 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:30:59,940 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:30:59,940 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:30:59,941 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:30:59,941 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:30:59,941 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:30:59,942 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:30:59,946 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:30:59,947 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:30:59,947 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:30:59,947 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:30:59,959 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:30:59,959 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:30:59,959 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:30:59,960 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:30:59,963 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:30:59,964 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:30:59,964 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:30:59,964 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:30:59,989 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-16 23:31:00,017 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-16 23:31:00,017 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-16 23:31:00,017 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-16 23:31:00,017 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-16 23:31:00,018 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-16 23:31:00,018 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-16 23:31:00,018 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-16 23:31:00,018 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-16 23:31:00,037 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-09-16 23:31:00,039 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-16 23:31:00,091 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-16 23:31:00,091 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-16 23:31:00,104 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 46 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. [2020-09-16 23:31:00,108 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-16 23:31:00,148 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-16 23:31:00,151 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-16 23:31:00,152 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 46 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. [2020-09-16 23:31:00,154 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-16 23:31:00,158 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-16 23:31:01,607 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2250 [2020-09-16 23:31:01,607 INFO L214 etLargeBlockEncoding]: Total number of compositions: 55 [2020-09-16 23:31:01,612 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-09-16 23:31:01,642 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-09-16 23:31:01,644 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-09-16 23:31:01,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-16 23:31:01,654 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 23:31:01,655 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 23:31:01,655 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 23:31:01,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 23:31:01,663 INFO L82 PathProgramCache]: Analyzing trace with hash 1626400852, now seen corresponding path program 1 times [2020-09-16 23:31:01,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 23:31:01,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144861237] [2020-09-16 23:31:01,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 23:31:01,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 23:31:01,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 23:31:01,882 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144861237] [2020-09-16 23:31:01,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 23:31:01,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-16 23:31:01,884 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175736611] [2020-09-16 23:31:01,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-16 23:31:01,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 23:31:01,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-16 23:31:01,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-16 23:31:01,912 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-09-16 23:31:01,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 23:31:01,954 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-09-16 23:31:01,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-16 23:31:01,955 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-09-16 23:31:01,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 23:31:01,974 INFO L225 Difference]: With dead ends: 362 [2020-09-16 23:31:01,974 INFO L226 Difference]: Without dead ends: 298 [2020-09-16 23:31:01,976 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-16 23:31:02,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-09-16 23:31:02,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-09-16 23:31:02,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-09-16 23:31:02,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-09-16 23:31:02,053 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-09-16 23:31:02,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 23:31:02,054 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-09-16 23:31:02,055 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-16 23:31:02,055 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-09-16 23:31:02,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-16 23:31:02,056 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 23:31:02,056 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 23:31:02,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-16 23:31:02,057 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 23:31:02,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 23:31:02,058 INFO L82 PathProgramCache]: Analyzing trace with hash -1121187596, now seen corresponding path program 1 times [2020-09-16 23:31:02,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 23:31:02,058 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747168349] [2020-09-16 23:31:02,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 23:31:02,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 23:31:02,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 23:31:02,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747168349] [2020-09-16 23:31:02,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 23:31:02,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 23:31:02,237 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577771710] [2020-09-16 23:31:02,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-16 23:31:02,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 23:31:02,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-16 23:31:02,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-16 23:31:02,240 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 5 states. [2020-09-16 23:31:02,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 23:31:02,324 INFO L93 Difference]: Finished difference Result 330 states and 912 transitions. [2020-09-16 23:31:02,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-16 23:31:02,325 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-09-16 23:31:02,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 23:31:02,328 INFO L225 Difference]: With dead ends: 330 [2020-09-16 23:31:02,328 INFO L226 Difference]: Without dead ends: 266 [2020-09-16 23:31:02,329 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-16 23:31:02,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-09-16 23:31:02,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-09-16 23:31:02,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-09-16 23:31:02,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 752 transitions. [2020-09-16 23:31:02,353 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 752 transitions. Word has length 9 [2020-09-16 23:31:02,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 23:31:02,353 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 752 transitions. [2020-09-16 23:31:02,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-16 23:31:02,354 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 752 transitions. [2020-09-16 23:31:02,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-16 23:31:02,355 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 23:31:02,355 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 23:31:02,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-16 23:31:02,356 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 23:31:02,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 23:31:02,356 INFO L82 PathProgramCache]: Analyzing trace with hash -397698604, now seen corresponding path program 1 times [2020-09-16 23:31:02,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 23:31:02,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827981097] [2020-09-16 23:31:02,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 23:31:02,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 23:31:02,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 23:31:02,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827981097] [2020-09-16 23:31:02,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 23:31:02,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 23:31:02,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840847308] [2020-09-16 23:31:02,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-16 23:31:02,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 23:31:02,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-16 23:31:02,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-16 23:31:02,460 INFO L87 Difference]: Start difference. First operand 266 states and 752 transitions. Second operand 5 states. [2020-09-16 23:31:02,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 23:31:02,530 INFO L93 Difference]: Finished difference Result 290 states and 786 transitions. [2020-09-16 23:31:02,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-16 23:31:02,531 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-09-16 23:31:02,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 23:31:02,533 INFO L225 Difference]: With dead ends: 290 [2020-09-16 23:31:02,533 INFO L226 Difference]: Without dead ends: 242 [2020-09-16 23:31:02,534 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-16 23:31:02,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-09-16 23:31:02,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2020-09-16 23:31:02,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-09-16 23:31:02,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 670 transitions. [2020-09-16 23:31:02,550 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 670 transitions. Word has length 10 [2020-09-16 23:31:02,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 23:31:02,550 INFO L479 AbstractCegarLoop]: Abstraction has 242 states and 670 transitions. [2020-09-16 23:31:02,550 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-16 23:31:02,550 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 670 transitions. [2020-09-16 23:31:02,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-16 23:31:02,555 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 23:31:02,555 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 23:31:02,555 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-16 23:31:02,556 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 23:31:02,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 23:31:02,556 INFO L82 PathProgramCache]: Analyzing trace with hash 2136362745, now seen corresponding path program 1 times [2020-09-16 23:31:02,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 23:31:02,557 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605733780] [2020-09-16 23:31:02,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 23:31:02,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 23:31:02,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 23:31:02,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605733780] [2020-09-16 23:31:02,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 23:31:02,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 23:31:02,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800491632] [2020-09-16 23:31:02,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-16 23:31:02,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 23:31:02,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-16 23:31:02,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-16 23:31:02,648 INFO L87 Difference]: Start difference. First operand 242 states and 670 transitions. Second operand 5 states. [2020-09-16 23:31:02,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 23:31:02,691 INFO L93 Difference]: Finished difference Result 302 states and 803 transitions. [2020-09-16 23:31:02,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-16 23:31:02,691 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-09-16 23:31:02,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 23:31:02,693 INFO L225 Difference]: With dead ends: 302 [2020-09-16 23:31:02,693 INFO L226 Difference]: Without dead ends: 146 [2020-09-16 23:31:02,693 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-09-16 23:31:02,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-09-16 23:31:02,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-09-16 23:31:02,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-09-16 23:31:02,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 358 transitions. [2020-09-16 23:31:02,702 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 358 transitions. Word has length 11 [2020-09-16 23:31:02,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 23:31:02,702 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 358 transitions. [2020-09-16 23:31:02,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-16 23:31:02,702 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 358 transitions. [2020-09-16 23:31:02,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-16 23:31:02,704 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 23:31:02,704 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 23:31:02,704 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-16 23:31:02,704 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 23:31:02,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 23:31:02,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1939864517, now seen corresponding path program 1 times [2020-09-16 23:31:02,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 23:31:02,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032430380] [2020-09-16 23:31:02,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 23:31:02,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 23:31:02,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 23:31:02,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032430380] [2020-09-16 23:31:02,817 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 23:31:02,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-16 23:31:02,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644501465] [2020-09-16 23:31:02,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-16 23:31:02,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 23:31:02,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-16 23:31:02,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-16 23:31:02,822 INFO L87 Difference]: Start difference. First operand 146 states and 358 transitions. Second operand 6 states. [2020-09-16 23:31:02,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 23:31:02,943 INFO L93 Difference]: Finished difference Result 194 states and 465 transitions. [2020-09-16 23:31:02,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-16 23:31:02,945 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-09-16 23:31:02,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 23:31:02,946 INFO L225 Difference]: With dead ends: 194 [2020-09-16 23:31:02,947 INFO L226 Difference]: Without dead ends: 116 [2020-09-16 23:31:02,947 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-09-16 23:31:02,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-09-16 23:31:02,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2020-09-16 23:31:02,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-09-16 23:31:02,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 264 transitions. [2020-09-16 23:31:02,956 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 264 transitions. Word has length 13 [2020-09-16 23:31:02,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 23:31:02,957 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 264 transitions. [2020-09-16 23:31:02,957 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-16 23:31:02,957 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 264 transitions. [2020-09-16 23:31:02,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-16 23:31:02,960 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 23:31:02,960 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 23:31:02,960 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-16 23:31:02,960 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 23:31:02,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 23:31:02,961 INFO L82 PathProgramCache]: Analyzing trace with hash -471367565, now seen corresponding path program 1 times [2020-09-16 23:31:02,961 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 23:31:02,961 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469665651] [2020-09-16 23:31:02,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 23:31:03,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 23:31:03,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 23:31:03,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469665651] [2020-09-16 23:31:03,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 23:31:03,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-16 23:31:03,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82691742] [2020-09-16 23:31:03,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-16 23:31:03,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 23:31:03,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-16 23:31:03,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-16 23:31:03,108 INFO L87 Difference]: Start difference. First operand 116 states and 264 transitions. Second operand 6 states. [2020-09-16 23:31:03,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 23:31:03,179 INFO L93 Difference]: Finished difference Result 131 states and 289 transitions. [2020-09-16 23:31:03,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-16 23:31:03,179 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-09-16 23:31:03,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 23:31:03,180 INFO L225 Difference]: With dead ends: 131 [2020-09-16 23:31:03,181 INFO L226 Difference]: Without dead ends: 98 [2020-09-16 23:31:03,181 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-09-16 23:31:03,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-09-16 23:31:03,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2020-09-16 23:31:03,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-09-16 23:31:03,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 218 transitions. [2020-09-16 23:31:03,185 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 218 transitions. Word has length 14 [2020-09-16 23:31:03,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 23:31:03,186 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 218 transitions. [2020-09-16 23:31:03,186 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-16 23:31:03,186 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 218 transitions. [2020-09-16 23:31:03,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-16 23:31:03,187 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 23:31:03,187 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 23:31:03,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-16 23:31:03,187 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 23:31:03,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 23:31:03,188 INFO L82 PathProgramCache]: Analyzing trace with hash -484565939, now seen corresponding path program 1 times [2020-09-16 23:31:03,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 23:31:03,188 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612345299] [2020-09-16 23:31:03,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 23:31:03,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 23:31:03,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 23:31:03,264 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612345299] [2020-09-16 23:31:03,264 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 23:31:03,264 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 23:31:03,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646185600] [2020-09-16 23:31:03,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-16 23:31:03,266 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 23:31:03,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-16 23:31:03,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-16 23:31:03,266 INFO L87 Difference]: Start difference. First operand 98 states and 218 transitions. Second operand 4 states. [2020-09-16 23:31:03,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 23:31:03,296 INFO L93 Difference]: Finished difference Result 109 states and 223 transitions. [2020-09-16 23:31:03,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-16 23:31:03,296 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-09-16 23:31:03,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 23:31:03,297 INFO L225 Difference]: With dead ends: 109 [2020-09-16 23:31:03,297 INFO L226 Difference]: Without dead ends: 87 [2020-09-16 23:31:03,298 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 [2020-09-16 23:31:03,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-09-16 23:31:03,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-09-16 23:31:03,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-09-16 23:31:03,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 180 transitions. [2020-09-16 23:31:03,303 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 180 transitions. Word has length 14 [2020-09-16 23:31:03,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 23:31:03,303 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 180 transitions. [2020-09-16 23:31:03,303 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-16 23:31:03,304 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 180 transitions. [2020-09-16 23:31:03,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-16 23:31:03,304 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 23:31:03,304 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 23:31:03,305 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-16 23:31:03,305 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 23:31:03,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 23:31:03,305 INFO L82 PathProgramCache]: Analyzing trace with hash -1643108637, now seen corresponding path program 1 times [2020-09-16 23:31:03,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 23:31:03,306 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765164134] [2020-09-16 23:31:03,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 23:31:03,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 23:31:03,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 23:31:03,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765164134] [2020-09-16 23:31:03,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 23:31:03,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-16 23:31:03,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70038027] [2020-09-16 23:31:03,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-16 23:31:03,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 23:31:03,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-16 23:31:03,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-16 23:31:03,429 INFO L87 Difference]: Start difference. First operand 87 states and 180 transitions. Second operand 5 states. [2020-09-16 23:31:03,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 23:31:03,481 INFO L93 Difference]: Finished difference Result 83 states and 155 transitions. [2020-09-16 23:31:03,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-16 23:31:03,483 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-09-16 23:31:03,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 23:31:03,484 INFO L225 Difference]: With dead ends: 83 [2020-09-16 23:31:03,484 INFO L226 Difference]: Without dead ends: 68 [2020-09-16 23:31:03,485 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-16 23:31:03,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-16 23:31:03,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-09-16 23:31:03,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-16 23:31:03,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 125 transitions. [2020-09-16 23:31:03,488 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 125 transitions. Word has length 15 [2020-09-16 23:31:03,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 23:31:03,489 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 125 transitions. [2020-09-16 23:31:03,489 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-16 23:31:03,489 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 125 transitions. [2020-09-16 23:31:03,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-16 23:31:03,493 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 23:31:03,496 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 23:31:03,496 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-16 23:31:03,497 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 23:31:03,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 23:31:03,497 INFO L82 PathProgramCache]: Analyzing trace with hash -1105925332, now seen corresponding path program 1 times [2020-09-16 23:31:03,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 23:31:03,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789003956] [2020-09-16 23:31:03,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 23:31:03,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 23:31:03,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 23:31:03,624 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789003956] [2020-09-16 23:31:03,624 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 23:31:03,624 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-16 23:31:03,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817308701] [2020-09-16 23:31:03,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-16 23:31:03,628 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 23:31:03,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-16 23:31:03,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-16 23:31:03,629 INFO L87 Difference]: Start difference. First operand 68 states and 125 transitions. Second operand 6 states. [2020-09-16 23:31:03,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 23:31:03,687 INFO L93 Difference]: Finished difference Result 61 states and 109 transitions. [2020-09-16 23:31:03,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-16 23:31:03,688 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-09-16 23:31:03,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 23:31:03,689 INFO L225 Difference]: With dead ends: 61 [2020-09-16 23:31:03,689 INFO L226 Difference]: Without dead ends: 55 [2020-09-16 23:31:03,689 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-16 23:31:03,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-16 23:31:03,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-09-16 23:31:03,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-16 23:31:03,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 99 transitions. [2020-09-16 23:31:03,694 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 99 transitions. Word has length 16 [2020-09-16 23:31:03,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 23:31:03,694 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 99 transitions. [2020-09-16 23:31:03,695 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-16 23:31:03,695 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 99 transitions. [2020-09-16 23:31:03,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-16 23:31:03,695 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 23:31:03,696 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 23:31:03,696 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-16 23:31:03,696 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 23:31:03,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 23:31:03,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1123595488, now seen corresponding path program 1 times [2020-09-16 23:31:03,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 23:31:03,700 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536464383] [2020-09-16 23:31:03,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 23:31:03,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 23:31:03,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 23:31:03,789 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536464383] [2020-09-16 23:31:03,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 23:31:03,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 23:31:03,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523724897] [2020-09-16 23:31:03,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-16 23:31:03,791 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 23:31:03,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-16 23:31:03,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-16 23:31:03,791 INFO L87 Difference]: Start difference. First operand 55 states and 99 transitions. Second operand 4 states. [2020-09-16 23:31:03,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 23:31:03,810 INFO L93 Difference]: Finished difference Result 54 states and 98 transitions. [2020-09-16 23:31:03,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-16 23:31:03,811 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-09-16 23:31:03,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 23:31:03,811 INFO L225 Difference]: With dead ends: 54 [2020-09-16 23:31:03,811 INFO L226 Difference]: Without dead ends: 0 [2020-09-16 23:31:03,812 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 [2020-09-16 23:31:03,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-16 23:31:03,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-16 23:31:03,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-16 23:31:03,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-16 23:31:03,813 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-09-16 23:31:03,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 23:31:03,813 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-16 23:31:03,813 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-16 23:31:03,813 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-16 23:31:03,813 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-16 23:31:03,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-16 23:31:03,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 11:31:03 BasicIcfg [2020-09-16 23:31:03,819 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-16 23:31:03,822 INFO L168 Benchmark]: Toolchain (without parser) took 5324.68 ms. Allocated memory was 147.3 MB in the beginning and 245.9 MB in the end (delta: 98.6 MB). Free memory was 102.0 MB in the beginning and 111.3 MB in the end (delta: -9.3 MB). Peak memory consumption was 89.3 MB. Max. memory is 7.1 GB. [2020-09-16 23:31:03,823 INFO L168 Benchmark]: CDTParser took 1.45 ms. Allocated memory is still 147.3 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-09-16 23:31:03,825 INFO L168 Benchmark]: CACSL2BoogieTranslator took 788.12 ms. Allocated memory was 147.3 MB in the beginning and 206.0 MB in the end (delta: 58.7 MB). Free memory was 101.4 MB in the beginning and 163.9 MB in the end (delta: -62.5 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. [2020-09-16 23:31:03,830 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.55 ms. Allocated memory is still 206.0 MB. Free memory was 163.9 MB in the beginning and 161.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-16 23:31:03,831 INFO L168 Benchmark]: Boogie Preprocessor took 32.81 ms. Allocated memory is still 206.0 MB. Free memory was 161.9 MB in the beginning and 160.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-16 23:31:03,832 INFO L168 Benchmark]: RCFGBuilder took 494.31 ms. Allocated memory is still 206.0 MB. Free memory was 160.6 MB in the beginning and 138.1 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. [2020-09-16 23:31:03,838 INFO L168 Benchmark]: TraceAbstraction took 3941.63 ms. Allocated memory was 206.0 MB in the beginning and 245.9 MB in the end (delta: 39.8 MB). Free memory was 137.4 MB in the beginning and 111.3 MB in the end (delta: 26.1 MB). Peak memory consumption was 66.0 MB. Max. memory is 7.1 GB. [2020-09-16 23:31:03,846 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.45 ms. Allocated memory is still 147.3 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 788.12 ms. Allocated memory was 147.3 MB in the beginning and 206.0 MB in the end (delta: 58.7 MB). Free memory was 101.4 MB in the beginning and 163.9 MB in the end (delta: -62.5 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 57.55 ms. Allocated memory is still 206.0 MB. Free memory was 163.9 MB in the beginning and 161.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 32.81 ms. Allocated memory is still 206.0 MB. Free memory was 161.9 MB in the beginning and 160.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 494.31 ms. Allocated memory is still 206.0 MB. Free memory was 160.6 MB in the beginning and 138.1 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3941.63 ms. Allocated memory was 206.0 MB in the beginning and 245.9 MB in the end (delta: 39.8 MB). Free memory was 137.4 MB in the beginning and 111.3 MB in the end (delta: 26.1 MB). Peak memory consumption was 66.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.5s, 78 ProgramPointsBefore, 32 ProgramPointsAfterwards, 70 TransitionsBefore, 23 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 14 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 660 VarBasedMoverChecksPositive, 29 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 27 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 2250 CheckedPairsTotal, 55 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: 3.8s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 187 SDtfs, 267 SDslu, 361 SDs, 0 SdLazy, 212 SolverSat, 45 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 53 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred 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, 10 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 118 ConstructedInterpolants, 0 QuantifiedInterpolants, 5172 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...