/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe036_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-1d1d2b5 [2020-10-21 23:09:26,533 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-21 23:09:26,535 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-21 23:09:26,559 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-21 23:09:26,559 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-21 23:09:26,560 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-21 23:09:26,561 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-21 23:09:26,563 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-21 23:09:26,564 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-21 23:09:26,565 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-21 23:09:26,566 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-21 23:09:26,567 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-21 23:09:26,567 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-21 23:09:26,568 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-21 23:09:26,569 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-21 23:09:26,570 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-21 23:09:26,571 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-21 23:09:26,572 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-21 23:09:26,574 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-21 23:09:26,576 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-21 23:09:26,577 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-21 23:09:26,578 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-21 23:09:26,579 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-21 23:09:26,580 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-21 23:09:26,582 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-21 23:09:26,582 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-21 23:09:26,583 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-21 23:09:26,583 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-21 23:09:26,584 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-21 23:09:26,587 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-21 23:09:26,588 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-21 23:09:26,588 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-21 23:09:26,589 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-21 23:09:26,590 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-21 23:09:26,591 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-21 23:09:26,591 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-21 23:09:26,592 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-21 23:09:26,592 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-21 23:09:26,592 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-21 23:09:26,593 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-21 23:09:26,594 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-21 23:09:26,594 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf [2020-10-21 23:09:26,617 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-21 23:09:26,617 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-21 23:09:26,618 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-21 23:09:26,619 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-21 23:09:26,619 INFO L138 SettingsManager]: * Use SBE=true [2020-10-21 23:09:26,619 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-21 23:09:26,619 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-21 23:09:26,619 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-21 23:09:26,620 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-21 23:09:26,620 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-21 23:09:26,620 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-21 23:09:26,620 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-21 23:09:26,620 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-21 23:09:26,621 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-21 23:09:26,621 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-21 23:09:26,621 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-21 23:09:26,621 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-21 23:09:26,621 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-21 23:09:26,622 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-21 23:09:26,622 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-21 23:09:26,622 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-21 23:09:26,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-21 23:09:26,622 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-21 23:09:26,623 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-21 23:09:26,623 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-21 23:09:26,623 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-21 23:09:26,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-21 23:09:26,623 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-21 23:09:26,623 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-21 23:09:26,920 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-21 23:09:26,933 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-21 23:09:26,939 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-21 23:09:26,940 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-21 23:09:26,943 INFO L275 PluginConnector]: CDTParser initialized [2020-10-21 23:09:26,943 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe036_tso.opt.i [2020-10-21 23:09:27,003 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e526710a3/a409a475406b4972b8d5220d21fd31f5/FLAG47735a5c6 [2020-10-21 23:09:27,527 INFO L306 CDTParser]: Found 1 translation units. [2020-10-21 23:09:27,529 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe036_tso.opt.i [2020-10-21 23:09:27,541 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e526710a3/a409a475406b4972b8d5220d21fd31f5/FLAG47735a5c6 [2020-10-21 23:09:27,838 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e526710a3/a409a475406b4972b8d5220d21fd31f5 [2020-10-21 23:09:27,846 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-21 23:09:27,853 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-21 23:09:27,854 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-21 23:09:27,854 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-21 23:09:27,857 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-21 23:09:27,858 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 11:09:27" (1/1) ... [2020-10-21 23:09:27,861 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@613db1db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:09:27, skipping insertion in model container [2020-10-21 23:09:27,861 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 11:09:27" (1/1) ... [2020-10-21 23:09:27,871 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-21 23:09:27,931 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-21 23:09:28,462 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-21 23:09:28,474 INFO L203 MainTranslator]: Completed pre-run [2020-10-21 23:09:28,554 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-21 23:09:28,633 INFO L208 MainTranslator]: Completed translation [2020-10-21 23:09:28,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:09:28 WrapperNode [2020-10-21 23:09:28,634 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-21 23:09:28,635 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-21 23:09:28,635 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-21 23:09:28,635 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-21 23:09:28,644 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:09:28" (1/1) ... [2020-10-21 23:09:28,659 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:09:28" (1/1) ... [2020-10-21 23:09:28,682 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-21 23:09:28,682 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-21 23:09:28,682 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-21 23:09:28,682 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-21 23:09:28,691 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:09:28" (1/1) ... [2020-10-21 23:09:28,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:09:28" (1/1) ... [2020-10-21 23:09:28,694 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:09:28" (1/1) ... [2020-10-21 23:09:28,695 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:09:28" (1/1) ... [2020-10-21 23:09:28,701 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:09:28" (1/1) ... [2020-10-21 23:09:28,703 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:09:28" (1/1) ... [2020-10-21 23:09:28,705 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:09:28" (1/1) ... [2020-10-21 23:09:28,709 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-21 23:09:28,709 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-21 23:09:28,710 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-21 23:09:28,710 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-21 23:09:28,711 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:09:28" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-21 23:09:28,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-21 23:09:28,771 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-21 23:09:28,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-21 23:09:28,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-21 23:09:28,771 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-21 23:09:28,772 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-21 23:09:28,772 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-21 23:09:28,772 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-21 23:09:28,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-21 23:09:28,772 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-21 23:09:28,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-21 23:09:28,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-21 23:09:28,774 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-21 23:09:29,130 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-21 23:09:29,130 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-21 23:09:29,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 11:09:29 BoogieIcfgContainer [2020-10-21 23:09:29,132 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-21 23:09:29,134 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-21 23:09:29,134 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-21 23:09:29,136 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-21 23:09:29,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 11:09:27" (1/3) ... [2020-10-21 23:09:29,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bf90db0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 11:09:29, skipping insertion in model container [2020-10-21 23:09:29,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:09:28" (2/3) ... [2020-10-21 23:09:29,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bf90db0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 11:09:29, skipping insertion in model container [2020-10-21 23:09:29,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 11:09:29" (3/3) ... [2020-10-21 23:09:29,139 INFO L111 eAbstractionObserver]: Analyzing ICFG safe036_tso.opt.i [2020-10-21 23:09:29,152 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-21 23:09:29,153 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-21 23:09:29,163 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-21 23:09:29,165 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-21 23:09:29,189 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:29,189 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:29,190 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:29,190 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:29,190 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:29,191 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:29,191 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:29,191 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:29,192 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:29,192 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:29,192 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:29,193 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:29,196 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:29,196 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:29,197 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:29,197 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:29,203 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:29,203 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:29,203 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:29,204 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:09:29,206 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-21 23:09:29,220 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-21 23:09:29,240 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-21 23:09:29,241 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-21 23:09:29,241 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-21 23:09:29,241 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-21 23:09:29,241 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-21 23:09:29,242 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-21 23:09:29,242 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-21 23:09:29,242 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-21 23:09:29,255 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-21 23:09:29,255 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 65 transitions, 140 flow [2020-10-21 23:09:29,258 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 65 transitions, 140 flow [2020-10-21 23:09:29,260 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 69 places, 65 transitions, 140 flow [2020-10-21 23:09:29,303 INFO L129 PetriNetUnfolder]: 3/63 cut-off events. [2020-10-21 23:09:29,303 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-21 23:09:29,309 INFO L80 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 63 events. 3/63 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2020-10-21 23:09:29,311 INFO L116 LiptonReduction]: Number of co-enabled transitions 792 [2020-10-21 23:09:30,646 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-10-21 23:09:30,751 INFO L131 LiptonReduction]: Checked pairs total: 1418 [2020-10-21 23:09:30,752 INFO L133 LiptonReduction]: Total number of compositions: 63 [2020-10-21 23:09:30,757 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 23 places, 17 transitions, 44 flow [2020-10-21 23:09:30,771 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 90 states. [2020-10-21 23:09:30,773 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states. [2020-10-21 23:09:30,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-21 23:09:30,779 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:09:30,780 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-21 23:09:30,781 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:09:30,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:09:30,786 INFO L82 PathProgramCache]: Analyzing trace with hash -1338798449, now seen corresponding path program 1 times [2020-10-21 23:09:30,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:09:30,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135680319] [2020-10-21 23:09:30,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:09:30,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:09:30,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:09:30,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135680319] [2020-10-21 23:09:30,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:09:30,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-21 23:09:30,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102884313] [2020-10-21 23:09:30,958 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-21 23:09:30,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:09:30,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-21 23:09:30,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-21 23:09:30,976 INFO L87 Difference]: Start difference. First operand 90 states. Second operand 2 states. [2020-10-21 23:09:30,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:09:30,995 INFO L93 Difference]: Finished difference Result 90 states and 200 transitions. [2020-10-21 23:09:30,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-21 23:09:30,997 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-10-21 23:09:30,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:09:31,008 INFO L225 Difference]: With dead ends: 90 [2020-10-21 23:09:31,008 INFO L226 Difference]: Without dead ends: 74 [2020-10-21 23:09:31,010 INFO L677 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 [2020-10-21 23:09:31,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-21 23:09:31,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-10-21 23:09:31,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-21 23:09:31,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 160 transitions. [2020-10-21 23:09:31,055 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 160 transitions. Word has length 6 [2020-10-21 23:09:31,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:09:31,055 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 160 transitions. [2020-10-21 23:09:31,056 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-21 23:09:31,056 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 160 transitions. [2020-10-21 23:09:31,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-21 23:09:31,057 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:09:31,057 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:09:31,057 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-21 23:09:31,058 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:09:31,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:09:31,058 INFO L82 PathProgramCache]: Analyzing trace with hash 1446900907, now seen corresponding path program 1 times [2020-10-21 23:09:31,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:09:31,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592579154] [2020-10-21 23:09:31,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:09:31,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:09:31,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:09:31,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592579154] [2020-10-21 23:09:31,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:09:31,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 23:09:31,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350232017] [2020-10-21 23:09:31,231 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-21 23:09:31,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:09:31,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-21 23:09:31,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-21 23:09:31,233 INFO L87 Difference]: Start difference. First operand 74 states and 160 transitions. Second operand 4 states. [2020-10-21 23:09:31,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:09:31,285 INFO L93 Difference]: Finished difference Result 63 states and 112 transitions. [2020-10-21 23:09:31,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-21 23:09:31,287 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-21 23:09:31,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:09:31,288 INFO L225 Difference]: With dead ends: 63 [2020-10-21 23:09:31,288 INFO L226 Difference]: Without dead ends: 47 [2020-10-21 23:09:31,290 INFO L677 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 [2020-10-21 23:09:31,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-21 23:09:31,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-10-21 23:09:31,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-21 23:09:31,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 79 transitions. [2020-10-21 23:09:31,303 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 79 transitions. Word has length 7 [2020-10-21 23:09:31,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:09:31,303 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 79 transitions. [2020-10-21 23:09:31,304 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-21 23:09:31,304 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 79 transitions. [2020-10-21 23:09:31,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-21 23:09:31,305 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:09:31,305 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:09:31,307 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-21 23:09:31,307 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:09:31,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:09:31,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1074461755, now seen corresponding path program 1 times [2020-10-21 23:09:31,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:09:31,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110028553] [2020-10-21 23:09:31,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:09:31,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:09:31,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:09:31,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110028553] [2020-10-21 23:09:31,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:09:31,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-21 23:09:31,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080566307] [2020-10-21 23:09:31,417 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 23:09:31,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:09:31,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 23:09:31,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 23:09:31,418 INFO L87 Difference]: Start difference. First operand 47 states and 79 transitions. Second operand 5 states. [2020-10-21 23:09:31,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:09:31,459 INFO L93 Difference]: Finished difference Result 36 states and 55 transitions. [2020-10-21 23:09:31,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 23:09:31,459 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-21 23:09:31,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:09:31,460 INFO L225 Difference]: With dead ends: 36 [2020-10-21 23:09:31,460 INFO L226 Difference]: Without dead ends: 29 [2020-10-21 23:09:31,461 INFO L677 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 [2020-10-21 23:09:31,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-21 23:09:31,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-21 23:09:31,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-21 23:09:31,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 43 transitions. [2020-10-21 23:09:31,465 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 43 transitions. Word has length 10 [2020-10-21 23:09:31,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:09:31,465 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 43 transitions. [2020-10-21 23:09:31,465 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 23:09:31,466 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 43 transitions. [2020-10-21 23:09:31,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 23:09:31,466 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:09:31,466 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:09:31,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-21 23:09:31,467 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:09:31,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:09:31,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1774648449, now seen corresponding path program 1 times [2020-10-21 23:09:31,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:09:31,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524137101] [2020-10-21 23:09:31,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:09:31,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:09:31,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:09:31,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524137101] [2020-10-21 23:09:31,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:09:31,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-21 23:09:31,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097124892] [2020-10-21 23:09:31,559 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 23:09:31,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:09:31,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 23:09:31,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-21 23:09:31,561 INFO L87 Difference]: Start difference. First operand 29 states and 43 transitions. Second operand 5 states. [2020-10-21 23:09:31,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:09:31,595 INFO L93 Difference]: Finished difference Result 37 states and 52 transitions. [2020-10-21 23:09:31,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-21 23:09:31,596 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-21 23:09:31,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:09:31,597 INFO L225 Difference]: With dead ends: 37 [2020-10-21 23:09:31,597 INFO L226 Difference]: Without dead ends: 17 [2020-10-21 23:09:31,597 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:09:31,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-10-21 23:09:31,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-10-21 23:09:31,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-21 23:09:31,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2020-10-21 23:09:31,600 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 13 [2020-10-21 23:09:31,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:09:31,600 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2020-10-21 23:09:31,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 23:09:31,601 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2020-10-21 23:09:31,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 23:09:31,605 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:09:31,605 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:09:31,605 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-21 23:09:31,605 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:09:31,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:09:31,606 INFO L82 PathProgramCache]: Analyzing trace with hash 290614237, now seen corresponding path program 2 times [2020-10-21 23:09:31,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:09:31,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411402461] [2020-10-21 23:09:31,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:09:31,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:09:31,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:09:31,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411402461] [2020-10-21 23:09:31,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:09:31,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-21 23:09:31,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403095645] [2020-10-21 23:09:31,705 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 23:09:31,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:09:31,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 23:09:31,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-21 23:09:31,706 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 5 states. [2020-10-21 23:09:31,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:09:31,729 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2020-10-21 23:09:31,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-21 23:09:31,730 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-21 23:09:31,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:09:31,730 INFO L225 Difference]: With dead ends: 16 [2020-10-21 23:09:31,730 INFO L226 Difference]: Without dead ends: 0 [2020-10-21 23:09:31,731 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:09:31,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-21 23:09:31,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-21 23:09:31,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-21 23:09:31,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-21 23:09:31,734 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-10-21 23:09:31,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:09:31,734 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-21 23:09:31,734 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 23:09:31,734 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-21 23:09:31,734 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-21 23:09:31,735 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-21 23:09:31,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 11:09:31 BasicIcfg [2020-10-21 23:09:31,741 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-21 23:09:31,749 INFO L168 Benchmark]: Toolchain (without parser) took 3901.26 ms. Allocated memory was 138.4 MB in the beginning and 250.6 MB in the end (delta: 112.2 MB). Free memory was 99.6 MB in the beginning and 127.1 MB in the end (delta: -27.4 MB). Peak memory consumption was 84.8 MB. Max. memory is 7.1 GB. [2020-10-21 23:09:31,750 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-10-21 23:09:31,753 INFO L168 Benchmark]: CACSL2BoogieTranslator took 780.35 ms. Allocated memory was 138.4 MB in the beginning and 200.8 MB in the end (delta: 62.4 MB). Free memory was 98.6 MB in the beginning and 154.9 MB in the end (delta: -56.3 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2020-10-21 23:09:31,753 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.14 ms. Allocated memory is still 200.8 MB. Free memory was 154.9 MB in the beginning and 152.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-10-21 23:09:31,754 INFO L168 Benchmark]: Boogie Preprocessor took 27.00 ms. Allocated memory is still 200.8 MB. Free memory was 152.8 MB in the beginning and 151.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-10-21 23:09:31,755 INFO L168 Benchmark]: RCFGBuilder took 423.06 ms. Allocated memory is still 200.8 MB. Free memory was 151.4 MB in the beginning and 129.6 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. [2020-10-21 23:09:31,758 INFO L168 Benchmark]: TraceAbstraction took 2608.06 ms. Allocated memory was 200.8 MB in the beginning and 250.6 MB in the end (delta: 49.8 MB). Free memory was 128.9 MB in the beginning and 127.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 51.7 MB. Max. memory is 7.1 GB. [2020-10-21 23:09:31,764 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 780.35 ms. Allocated memory was 138.4 MB in the beginning and 200.8 MB in the end (delta: 62.4 MB). Free memory was 98.6 MB in the beginning and 154.9 MB in the end (delta: -56.3 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 47.14 ms. Allocated memory is still 200.8 MB. Free memory was 154.9 MB in the beginning and 152.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.00 ms. Allocated memory is still 200.8 MB. Free memory was 152.8 MB in the beginning and 151.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 423.06 ms. Allocated memory is still 200.8 MB. Free memory was 151.4 MB in the beginning and 129.6 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2608.06 ms. Allocated memory was 200.8 MB in the beginning and 250.6 MB in the end (delta: 49.8 MB). Free memory was 128.9 MB in the beginning and 127.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 51.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 435 VarBasedMoverChecksPositive, 11 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 25 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.4s, 69 PlacesBefore, 23 PlacesAfterwards, 65 TransitionsBefore, 17 TransitionsAfterwards, 792 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 2 ChoiceCompositions, 63 TotalNumberOfCompositions, 1418 MoverChecksTotal - PositiveResult [Line: 17]: 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 3 procedures, 63 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.4s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 71 SDtfs, 48 SDslu, 99 SDs, 0 SdLazy, 50 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=90occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 1126 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...