/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/safe017_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-bf4350c [2020-09-17 00:10:33,373 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-17 00:10:33,377 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-17 00:10:33,426 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-17 00:10:33,426 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-17 00:10:33,437 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-17 00:10:33,440 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-17 00:10:33,444 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-17 00:10:33,447 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-17 00:10:33,451 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-17 00:10:33,452 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-17 00:10:33,454 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-17 00:10:33,454 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-17 00:10:33,457 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-17 00:10:33,460 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-17 00:10:33,462 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-17 00:10:33,464 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-17 00:10:33,466 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-17 00:10:33,469 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-17 00:10:33,477 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-17 00:10:33,479 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-17 00:10:33,481 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-17 00:10:33,482 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-17 00:10:33,483 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-17 00:10:33,487 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-17 00:10:33,493 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-17 00:10:33,494 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-17 00:10:33,495 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-17 00:10:33,496 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-17 00:10:33,497 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-17 00:10:33,498 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-17 00:10:33,498 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-17 00:10:33,499 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-17 00:10:33,499 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-17 00:10:33,500 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-17 00:10:33,501 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-17 00:10:33,502 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 00:10:33,548 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-17 00:10:33,548 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-17 00:10:33,550 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-17 00:10:33,551 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-17 00:10:33,551 INFO L138 SettingsManager]: * Use SBE=true [2020-09-17 00:10:33,551 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-17 00:10:33,552 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-17 00:10:33,552 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-17 00:10:33,552 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-17 00:10:33,552 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-17 00:10:33,553 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-17 00:10:33,553 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-17 00:10:33,554 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-17 00:10:33,554 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-17 00:10:33,554 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-17 00:10:33,555 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-17 00:10:33,555 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-17 00:10:33,555 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-17 00:10:33,555 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-17 00:10:33,555 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-17 00:10:33,556 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-17 00:10:33,556 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-17 00:10:33,556 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-17 00:10:33,556 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-17 00:10:33,556 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-17 00:10:33,557 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-17 00:10:33,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-17 00:10:33,557 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-17 00:10:33,557 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-17 00:10:33,557 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-17 00:10:33,984 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-17 00:10:34,006 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-17 00:10:34,011 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-17 00:10:34,013 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-17 00:10:34,013 INFO L275 PluginConnector]: CDTParser initialized [2020-09-17 00:10:34,014 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe017_tso.oepc.i [2020-09-17 00:10:34,092 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9bfa00aae/815b5390503140cab910836fd47bddfc/FLAG9bc5cf47a [2020-09-17 00:10:34,790 INFO L306 CDTParser]: Found 1 translation units. [2020-09-17 00:10:34,793 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe017_tso.oepc.i [2020-09-17 00:10:34,818 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9bfa00aae/815b5390503140cab910836fd47bddfc/FLAG9bc5cf47a [2020-09-17 00:10:34,964 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9bfa00aae/815b5390503140cab910836fd47bddfc [2020-09-17 00:10:34,981 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-17 00:10:34,988 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-17 00:10:34,992 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-17 00:10:34,992 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-17 00:10:34,997 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-17 00:10:34,999 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 12:10:34" (1/1) ... [2020-09-17 00:10:35,003 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70fe5ff6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:10:35, skipping insertion in model container [2020-09-17 00:10:35,004 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 12:10:34" (1/1) ... [2020-09-17 00:10:35,015 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-17 00:10:35,090 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-17 00:10:35,574 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-17 00:10:35,589 INFO L203 MainTranslator]: Completed pre-run [2020-09-17 00:10:35,675 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-17 00:10:35,751 INFO L208 MainTranslator]: Completed translation [2020-09-17 00:10:35,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:10:35 WrapperNode [2020-09-17 00:10:35,752 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-17 00:10:35,753 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-17 00:10:35,753 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-17 00:10:35,754 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-17 00:10:35,765 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:10:35" (1/1) ... [2020-09-17 00:10:35,785 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:10:35" (1/1) ... [2020-09-17 00:10:35,815 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-17 00:10:35,815 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-17 00:10:35,815 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-17 00:10:35,816 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-17 00:10:35,827 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:10:35" (1/1) ... [2020-09-17 00:10:35,828 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:10:35" (1/1) ... [2020-09-17 00:10:35,831 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:10:35" (1/1) ... [2020-09-17 00:10:35,832 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:10:35" (1/1) ... [2020-09-17 00:10:35,838 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:10:35" (1/1) ... [2020-09-17 00:10:35,845 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:10:35" (1/1) ... [2020-09-17 00:10:35,848 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:10:35" (1/1) ... [2020-09-17 00:10:35,851 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-17 00:10:35,852 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-17 00:10:35,852 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-17 00:10:35,852 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-17 00:10:35,853 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:10:35" (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 00:10:35,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-17 00:10:35,940 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-17 00:10:35,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-17 00:10:35,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-17 00:10:35,940 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-17 00:10:35,941 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-17 00:10:35,941 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-17 00:10:35,941 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-17 00:10:35,941 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-17 00:10:35,941 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-17 00:10:35,942 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-17 00:10:35,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-17 00:10:35,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-17 00:10:35,945 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 00:10:36,345 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-17 00:10:36,345 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-17 00:10:36,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 12:10:36 BoogieIcfgContainer [2020-09-17 00:10:36,351 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-17 00:10:36,352 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-17 00:10:36,352 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-17 00:10:36,356 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-17 00:10:36,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.09 12:10:34" (1/3) ... [2020-09-17 00:10:36,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@83053b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 12:10:36, skipping insertion in model container [2020-09-17 00:10:36,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:10:35" (2/3) ... [2020-09-17 00:10:36,358 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@83053b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 12:10:36, skipping insertion in model container [2020-09-17 00:10:36,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 12:10:36" (3/3) ... [2020-09-17 00:10:36,360 INFO L109 eAbstractionObserver]: Analyzing ICFG safe017_tso.oepc.i [2020-09-17 00:10:36,372 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-17 00:10:36,373 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-17 00:10:36,383 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-17 00:10:36,385 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-17 00:10:36,414 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:10:36,415 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:10:36,415 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:10:36,415 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:10:36,416 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:10:36,416 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:10:36,417 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:10:36,417 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:10:36,417 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:10:36,417 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:10:36,418 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:10:36,418 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:10:36,419 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:10:36,419 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:10:36,419 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:10:36,419 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:10:36,420 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:10:36,420 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:10:36,424 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:10:36,425 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:10:36,425 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:10:36,425 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:10:36,436 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:10:36,436 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:10:36,436 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:10:36,437 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:10:36,441 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:10:36,442 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:10:36,442 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:10:36,442 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:10:36,467 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-17 00:10:36,495 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-17 00:10:36,496 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-17 00:10:36,496 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-17 00:10:36,496 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-17 00:10:36,496 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-17 00:10:36,497 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-17 00:10:36,497 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-17 00:10:36,497 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-17 00:10:36,516 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 67 transitions, 149 flow [2020-09-17 00:10:36,519 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 75 places, 67 transitions, 149 flow [2020-09-17 00:10:36,570 INFO L129 PetriNetUnfolder]: 2/64 cut-off events. [2020-09-17 00:10:36,571 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-17 00:10:36,577 INFO L80 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 64 events. 2/64 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. 0/61 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-09-17 00:10:36,580 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 75 places, 67 transitions, 149 flow [2020-09-17 00:10:36,601 INFO L129 PetriNetUnfolder]: 2/64 cut-off events. [2020-09-17 00:10:36,602 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-17 00:10:36,602 INFO L80 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 64 events. 2/64 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. 0/61 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-09-17 00:10:36,605 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1178 [2020-09-17 00:10:36,606 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-17 00:10:38,025 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-09-17 00:10:38,356 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1818 [2020-09-17 00:10:38,357 INFO L214 etLargeBlockEncoding]: Total number of compositions: 52 [2020-09-17 00:10:38,361 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 20 transitions, 55 flow [2020-09-17 00:10:38,384 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 226 states. [2020-09-17 00:10:38,387 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states. [2020-09-17 00:10:38,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-17 00:10:38,396 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 00:10:38,397 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 00:10:38,398 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 00:10:38,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 00:10:38,405 INFO L82 PathProgramCache]: Analyzing trace with hash -540517404, now seen corresponding path program 1 times [2020-09-17 00:10:38,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 00:10:38,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123313989] [2020-09-17 00:10:38,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 00:10:38,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 00:10:38,678 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 00:10:38,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123313989] [2020-09-17 00:10:38,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 00:10:38,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-17 00:10:38,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484794054] [2020-09-17 00:10:38,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-17 00:10:38,688 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 00:10:38,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-17 00:10:38,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 00:10:38,706 INFO L87 Difference]: Start difference. First operand 226 states. Second operand 3 states. [2020-09-17 00:10:38,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 00:10:38,764 INFO L93 Difference]: Finished difference Result 220 states and 612 transitions. [2020-09-17 00:10:38,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-17 00:10:38,766 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-17 00:10:38,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 00:10:38,784 INFO L225 Difference]: With dead ends: 220 [2020-09-17 00:10:38,784 INFO L226 Difference]: Without dead ends: 172 [2020-09-17 00:10:38,786 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 00:10:38,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-09-17 00:10:38,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2020-09-17 00:10:38,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-09-17 00:10:38,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 460 transitions. [2020-09-17 00:10:38,856 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 460 transitions. Word has length 8 [2020-09-17 00:10:38,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 00:10:38,857 INFO L479 AbstractCegarLoop]: Abstraction has 172 states and 460 transitions. [2020-09-17 00:10:38,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-17 00:10:38,858 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 460 transitions. [2020-09-17 00:10:38,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-17 00:10:38,859 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 00:10:38,859 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 00:10:38,859 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-17 00:10:38,860 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 00:10:38,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 00:10:38,860 INFO L82 PathProgramCache]: Analyzing trace with hash 533202091, now seen corresponding path program 1 times [2020-09-17 00:10:38,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 00:10:38,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658244248] [2020-09-17 00:10:38,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 00:10:38,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 00:10:38,963 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 00:10:38,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658244248] [2020-09-17 00:10:38,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 00:10:38,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-17 00:10:38,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148340575] [2020-09-17 00:10:38,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-17 00:10:38,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 00:10:38,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-17 00:10:38,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 00:10:38,967 INFO L87 Difference]: Start difference. First operand 172 states and 460 transitions. Second operand 3 states. [2020-09-17 00:10:38,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 00:10:38,982 INFO L93 Difference]: Finished difference Result 166 states and 438 transitions. [2020-09-17 00:10:38,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-17 00:10:38,983 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-09-17 00:10:38,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 00:10:38,985 INFO L225 Difference]: With dead ends: 166 [2020-09-17 00:10:38,986 INFO L226 Difference]: Without dead ends: 166 [2020-09-17 00:10:38,987 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 00:10:38,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-09-17 00:10:39,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2020-09-17 00:10:39,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-09-17 00:10:39,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 438 transitions. [2020-09-17 00:10:39,006 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 438 transitions. Word has length 9 [2020-09-17 00:10:39,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 00:10:39,007 INFO L479 AbstractCegarLoop]: Abstraction has 166 states and 438 transitions. [2020-09-17 00:10:39,007 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-17 00:10:39,007 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 438 transitions. [2020-09-17 00:10:39,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-17 00:10:39,008 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 00:10:39,008 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 00:10:39,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-17 00:10:39,009 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 00:10:39,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 00:10:39,009 INFO L82 PathProgramCache]: Analyzing trace with hash -650605017, now seen corresponding path program 1 times [2020-09-17 00:10:39,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 00:10:39,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686664700] [2020-09-17 00:10:39,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 00:10:39,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 00:10:39,081 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 00:10:39,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686664700] [2020-09-17 00:10:39,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 00:10:39,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-17 00:10:39,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941541114] [2020-09-17 00:10:39,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-17 00:10:39,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 00:10:39,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-17 00:10:39,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 00:10:39,084 INFO L87 Difference]: Start difference. First operand 166 states and 438 transitions. Second operand 3 states. [2020-09-17 00:10:39,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 00:10:39,091 INFO L93 Difference]: Finished difference Result 158 states and 412 transitions. [2020-09-17 00:10:39,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-17 00:10:39,092 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-09-17 00:10:39,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 00:10:39,094 INFO L225 Difference]: With dead ends: 158 [2020-09-17 00:10:39,094 INFO L226 Difference]: Without dead ends: 158 [2020-09-17 00:10:39,095 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 00:10:39,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-09-17 00:10:39,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-09-17 00:10:39,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-09-17 00:10:39,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 412 transitions. [2020-09-17 00:10:39,107 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 412 transitions. Word has length 10 [2020-09-17 00:10:39,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 00:10:39,108 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 412 transitions. [2020-09-17 00:10:39,108 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-17 00:10:39,108 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 412 transitions. [2020-09-17 00:10:39,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-17 00:10:39,110 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 00:10:39,110 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 00:10:39,110 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-17 00:10:39,110 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 00:10:39,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 00:10:39,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1305380691, now seen corresponding path program 1 times [2020-09-17 00:10:39,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 00:10:39,111 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708102987] [2020-09-17 00:10:39,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 00:10:39,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 00:10:39,188 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 00:10:39,189 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708102987] [2020-09-17 00:10:39,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 00:10:39,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-17 00:10:39,189 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339399899] [2020-09-17 00:10:39,190 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-17 00:10:39,190 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 00:10:39,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-17 00:10:39,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-17 00:10:39,192 INFO L87 Difference]: Start difference. First operand 158 states and 412 transitions. Second operand 4 states. [2020-09-17 00:10:39,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 00:10:39,230 INFO L93 Difference]: Finished difference Result 218 states and 560 transitions. [2020-09-17 00:10:39,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-17 00:10:39,230 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-09-17 00:10:39,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 00:10:39,232 INFO L225 Difference]: With dead ends: 218 [2020-09-17 00:10:39,232 INFO L226 Difference]: Without dead ends: 146 [2020-09-17 00:10:39,233 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 00:10:39,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-09-17 00:10:39,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-09-17 00:10:39,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-09-17 00:10:39,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 370 transitions. [2020-09-17 00:10:39,245 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 370 transitions. Word has length 11 [2020-09-17 00:10:39,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 00:10:39,245 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 370 transitions. [2020-09-17 00:10:39,246 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-17 00:10:39,246 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 370 transitions. [2020-09-17 00:10:39,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-17 00:10:39,247 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 00:10:39,247 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 00:10:39,247 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-17 00:10:39,247 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 00:10:39,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 00:10:39,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1306080051, now seen corresponding path program 2 times [2020-09-17 00:10:39,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 00:10:39,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430827219] [2020-09-17 00:10:39,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 00:10:39,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 00:10:39,377 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 00:10:39,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430827219] [2020-09-17 00:10:39,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 00:10:39,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-17 00:10:39,379 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073160328] [2020-09-17 00:10:39,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-17 00:10:39,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 00:10:39,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-17 00:10:39,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-17 00:10:39,380 INFO L87 Difference]: Start difference. First operand 146 states and 370 transitions. Second operand 4 states. [2020-09-17 00:10:39,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 00:10:39,419 INFO L93 Difference]: Finished difference Result 167 states and 388 transitions. [2020-09-17 00:10:39,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-17 00:10:39,420 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-09-17 00:10:39,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 00:10:39,422 INFO L225 Difference]: With dead ends: 167 [2020-09-17 00:10:39,422 INFO L226 Difference]: Without dead ends: 125 [2020-09-17 00:10:39,423 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 00:10:39,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-09-17 00:10:39,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2020-09-17 00:10:39,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-09-17 00:10:39,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 288 transitions. [2020-09-17 00:10:39,437 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 288 transitions. Word has length 11 [2020-09-17 00:10:39,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 00:10:39,437 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 288 transitions. [2020-09-17 00:10:39,437 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-17 00:10:39,437 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 288 transitions. [2020-09-17 00:10:39,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-17 00:10:39,439 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 00:10:39,439 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 00:10:39,440 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-17 00:10:39,440 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 00:10:39,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 00:10:39,441 INFO L82 PathProgramCache]: Analyzing trace with hash 1819207960, now seen corresponding path program 1 times [2020-09-17 00:10:39,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 00:10:39,441 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274410841] [2020-09-17 00:10:39,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 00:10:39,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 00:10:39,527 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 00:10:39,527 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274410841] [2020-09-17 00:10:39,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 00:10:39,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 00:10:39,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084296984] [2020-09-17 00:10:39,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 00:10:39,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 00:10:39,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 00:10:39,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 00:10:39,529 INFO L87 Difference]: Start difference. First operand 125 states and 288 transitions. Second operand 5 states. [2020-09-17 00:10:39,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 00:10:39,571 INFO L93 Difference]: Finished difference Result 121 states and 257 transitions. [2020-09-17 00:10:39,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 00:10:39,572 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-09-17 00:10:39,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 00:10:39,573 INFO L225 Difference]: With dead ends: 121 [2020-09-17 00:10:39,573 INFO L226 Difference]: Without dead ends: 93 [2020-09-17 00:10:39,574 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 00:10:39,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-09-17 00:10:39,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2020-09-17 00:10:39,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-09-17 00:10:39,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 192 transitions. [2020-09-17 00:10:39,579 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 192 transitions. Word has length 12 [2020-09-17 00:10:39,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 00:10:39,580 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 192 transitions. [2020-09-17 00:10:39,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 00:10:39,580 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 192 transitions. [2020-09-17 00:10:39,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-17 00:10:39,581 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 00:10:39,581 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 00:10:39,581 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-17 00:10:39,581 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 00:10:39,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 00:10:39,582 INFO L82 PathProgramCache]: Analyzing trace with hash 589619789, now seen corresponding path program 1 times [2020-09-17 00:10:39,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 00:10:39,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207656855] [2020-09-17 00:10:39,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 00:10:39,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 00:10:39,622 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 00:10:39,622 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207656855] [2020-09-17 00:10:39,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 00:10:39,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-17 00:10:39,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66983953] [2020-09-17 00:10:39,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-17 00:10:39,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 00:10:39,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-17 00:10:39,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 00:10:39,624 INFO L87 Difference]: Start difference. First operand 93 states and 192 transitions. Second operand 3 states. [2020-09-17 00:10:39,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 00:10:39,631 INFO L93 Difference]: Finished difference Result 110 states and 218 transitions. [2020-09-17 00:10:39,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-17 00:10:39,632 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-09-17 00:10:39,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 00:10:39,633 INFO L225 Difference]: With dead ends: 110 [2020-09-17 00:10:39,633 INFO L226 Difference]: Without dead ends: 88 [2020-09-17 00:10:39,633 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 00:10:39,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-09-17 00:10:39,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2020-09-17 00:10:39,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-09-17 00:10:39,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 169 transitions. [2020-09-17 00:10:39,638 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 169 transitions. Word has length 13 [2020-09-17 00:10:39,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 00:10:39,639 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 169 transitions. [2020-09-17 00:10:39,639 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-17 00:10:39,639 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 169 transitions. [2020-09-17 00:10:39,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-17 00:10:39,640 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 00:10:39,640 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 00:10:39,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-17 00:10:39,640 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 00:10:39,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 00:10:39,641 INFO L82 PathProgramCache]: Analyzing trace with hash 205369494, now seen corresponding path program 1 times [2020-09-17 00:10:39,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 00:10:39,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945356243] [2020-09-17 00:10:39,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 00:10:39,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 00:10:39,681 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 00:10:39,681 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945356243] [2020-09-17 00:10:39,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 00:10:39,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-17 00:10:39,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795083599] [2020-09-17 00:10:39,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-17 00:10:39,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 00:10:39,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-17 00:10:39,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 00:10:39,683 INFO L87 Difference]: Start difference. First operand 86 states and 169 transitions. Second operand 3 states. [2020-09-17 00:10:39,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 00:10:39,696 INFO L93 Difference]: Finished difference Result 104 states and 195 transitions. [2020-09-17 00:10:39,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-17 00:10:39,696 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-09-17 00:10:39,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 00:10:39,697 INFO L225 Difference]: With dead ends: 104 [2020-09-17 00:10:39,697 INFO L226 Difference]: Without dead ends: 66 [2020-09-17 00:10:39,698 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 00:10:39,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-17 00:10:39,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-09-17 00:10:39,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-17 00:10:39,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 111 transitions. [2020-09-17 00:10:39,701 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 111 transitions. Word has length 14 [2020-09-17 00:10:39,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 00:10:39,701 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 111 transitions. [2020-09-17 00:10:39,701 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-17 00:10:39,701 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 111 transitions. [2020-09-17 00:10:39,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-17 00:10:39,702 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 00:10:39,702 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 00:10:39,703 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-17 00:10:39,703 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 00:10:39,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 00:10:39,703 INFO L82 PathProgramCache]: Analyzing trace with hash -610616562, now seen corresponding path program 2 times [2020-09-17 00:10:39,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 00:10:39,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086087505] [2020-09-17 00:10:39,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 00:10:39,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 00:10:39,754 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 00:10:39,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086087505] [2020-09-17 00:10:39,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 00:10:39,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 00:10:39,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793808484] [2020-09-17 00:10:39,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-17 00:10:39,755 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 00:10:39,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-17 00:10:39,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-17 00:10:39,756 INFO L87 Difference]: Start difference. First operand 65 states and 111 transitions. Second operand 4 states. [2020-09-17 00:10:39,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 00:10:39,786 INFO L93 Difference]: Finished difference Result 71 states and 116 transitions. [2020-09-17 00:10:39,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-17 00:10:39,787 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-09-17 00:10:39,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 00:10:39,787 INFO L225 Difference]: With dead ends: 71 [2020-09-17 00:10:39,788 INFO L226 Difference]: Without dead ends: 64 [2020-09-17 00:10:39,788 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 00:10:39,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-09-17 00:10:39,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-09-17 00:10:39,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-09-17 00:10:39,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 106 transitions. [2020-09-17 00:10:39,791 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 106 transitions. Word has length 14 [2020-09-17 00:10:39,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 00:10:39,791 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 106 transitions. [2020-09-17 00:10:39,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-17 00:10:39,791 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 106 transitions. [2020-09-17 00:10:39,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-17 00:10:39,792 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 00:10:39,793 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 00:10:39,793 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-17 00:10:39,793 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 00:10:39,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 00:10:39,793 INFO L82 PathProgramCache]: Analyzing trace with hash -375565572, now seen corresponding path program 3 times [2020-09-17 00:10:39,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 00:10:39,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596015637] [2020-09-17 00:10:39,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 00:10:39,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 00:10:39,878 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 00:10:39,879 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596015637] [2020-09-17 00:10:39,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 00:10:39,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-17 00:10:39,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437148724] [2020-09-17 00:10:39,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-17 00:10:39,880 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 00:10:39,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-17 00:10:39,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-17 00:10:39,880 INFO L87 Difference]: Start difference. First operand 63 states and 106 transitions. Second operand 6 states. [2020-09-17 00:10:39,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 00:10:39,910 INFO L93 Difference]: Finished difference Result 58 states and 100 transitions. [2020-09-17 00:10:39,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 00:10:39,910 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-09-17 00:10:39,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 00:10:39,910 INFO L225 Difference]: With dead ends: 58 [2020-09-17 00:10:39,911 INFO L226 Difference]: Without dead ends: 0 [2020-09-17 00:10:39,911 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 00:10:39,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-17 00:10:39,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-17 00:10:39,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-17 00:10:39,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-17 00:10:39,912 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-09-17 00:10:39,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 00:10:39,912 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-17 00:10:39,912 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-17 00:10:39,913 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-17 00:10:39,913 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-17 00:10:39,913 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-17 00:10:39,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.09 12:10:39 BasicIcfg [2020-09-17 00:10:39,918 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-17 00:10:39,920 INFO L168 Benchmark]: Toolchain (without parser) took 4937.09 ms. Allocated memory was 141.0 MB in the beginning and 246.4 MB in the end (delta: 105.4 MB). Free memory was 102.3 MB in the beginning and 139.7 MB in the end (delta: -37.3 MB). Peak memory consumption was 68.1 MB. Max. memory is 7.1 GB. [2020-09-17 00:10:39,921 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.2 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-09-17 00:10:39,922 INFO L168 Benchmark]: CACSL2BoogieTranslator took 760.52 ms. Allocated memory was 141.0 MB in the beginning and 205.5 MB in the end (delta: 64.5 MB). Free memory was 101.8 MB in the beginning and 162.9 MB in the end (delta: -61.1 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. [2020-09-17 00:10:39,923 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.80 ms. Allocated memory is still 205.5 MB. Free memory was 162.9 MB in the beginning and 161.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-17 00:10:39,923 INFO L168 Benchmark]: Boogie Preprocessor took 36.08 ms. Allocated memory is still 205.5 MB. Free memory was 161.0 MB in the beginning and 159.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-09-17 00:10:39,924 INFO L168 Benchmark]: RCFGBuilder took 499.22 ms. Allocated memory is still 205.5 MB. Free memory was 159.1 MB in the beginning and 138.0 MB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2020-09-17 00:10:39,925 INFO L168 Benchmark]: TraceAbstraction took 3565.75 ms. Allocated memory was 205.5 MB in the beginning and 246.4 MB in the end (delta: 40.9 MB). Free memory was 137.1 MB in the beginning and 139.7 MB in the end (delta: -2.6 MB). Peak memory consumption was 38.3 MB. Max. memory is 7.1 GB. [2020-09-17 00:10:39,929 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.2 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 760.52 ms. Allocated memory was 141.0 MB in the beginning and 205.5 MB in the end (delta: 64.5 MB). Free memory was 101.8 MB in the beginning and 162.9 MB in the end (delta: -61.1 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 61.80 ms. Allocated memory is still 205.5 MB. Free memory was 162.9 MB in the beginning and 161.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 36.08 ms. Allocated memory is still 205.5 MB. Free memory was 161.0 MB in the beginning and 159.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 499.22 ms. Allocated memory is still 205.5 MB. Free memory was 159.1 MB in the beginning and 138.0 MB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3565.75 ms. Allocated memory was 205.5 MB in the beginning and 246.4 MB in the end (delta: 40.9 MB). Free memory was 137.1 MB in the beginning and 139.7 MB in the end (delta: -2.6 MB). Peak memory consumption was 38.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.8s, 75 ProgramPointsBefore, 30 ProgramPointsAfterwards, 67 TransitionsBefore, 20 TransitionsAfterwards, 1178 CoEnabledTransitionPairs, 6 FixpointIterations, 12 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 621 VarBasedMoverChecksPositive, 32 VarBasedMoverChecksNegative, 16 SemBasedMoverChecksPositive, 27 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 1818 CheckedPairsTotal, 52 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, 66 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.4s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 179 SDtfs, 120 SDslu, 194 SDs, 0 SdLazy, 99 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=226occurred 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, 4 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 116 NumberOfCodeBlocks, 116 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 106 ConstructedInterpolants, 0 QuantifiedInterpolants, 3056 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...