/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/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe004_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 02:07:27,580 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 02:07:27,582 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 02:07:27,601 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 02:07:27,602 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 02:07:27,604 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 02:07:27,606 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 02:07:27,616 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 02:07:27,617 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 02:07:27,618 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 02:07:27,619 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 02:07:27,620 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 02:07:27,620 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 02:07:27,621 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 02:07:27,622 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 02:07:27,623 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 02:07:27,624 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 02:07:27,625 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 02:07:27,626 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 02:07:27,628 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 02:07:27,630 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 02:07:27,631 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 02:07:27,631 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 02:07:27,632 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 02:07:27,634 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 02:07:27,634 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 02:07:27,635 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 02:07:27,635 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 02:07:27,636 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 02:07:27,637 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 02:07:27,637 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 02:07:27,638 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 02:07:27,638 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 02:07:27,639 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 02:07:27,640 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 02:07:27,640 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 02:07:27,641 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 02:07:27,641 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 02:07:27,641 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 02:07:27,642 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 02:07:27,643 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 02:07:27,644 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe.epf [2020-04-18 02:07:27,658 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 02:07:27,658 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 02:07:27,660 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 02:07:27,660 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 02:07:27,660 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 02:07:27,660 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 02:07:27,660 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 02:07:27,661 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 02:07:27,661 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 02:07:27,661 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 02:07:27,661 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 02:07:27,661 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 02:07:27,662 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 02:07:27,662 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 02:07:27,662 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 02:07:27,662 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 02:07:27,662 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 02:07:27,663 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 02:07:27,663 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 02:07:27,663 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 02:07:27,663 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 02:07:27,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 02:07:27,664 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 02:07:27,664 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 02:07:27,664 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 02:07:27,664 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-18 02:07:27,665 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 02:07:27,665 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 02:07:27,665 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 02:07:27,665 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 02:07:27,949 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 02:07:27,968 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 02:07:27,972 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 02:07:27,973 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 02:07:27,973 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 02:07:27,974 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe004_tso.opt.i [2020-04-18 02:07:28,044 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2530005a2/f52a956cb82542edb12ac82bc3c6e9da/FLAG68702f503 [2020-04-18 02:07:28,579 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 02:07:28,581 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe004_tso.opt.i [2020-04-18 02:07:28,598 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2530005a2/f52a956cb82542edb12ac82bc3c6e9da/FLAG68702f503 [2020-04-18 02:07:28,882 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2530005a2/f52a956cb82542edb12ac82bc3c6e9da [2020-04-18 02:07:28,894 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 02:07:28,916 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 02:07:28,917 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 02:07:28,917 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 02:07:28,920 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 02:07:28,921 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:07:28" (1/1) ... [2020-04-18 02:07:28,924 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d637261 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:07:28, skipping insertion in model container [2020-04-18 02:07:28,925 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:07:28" (1/1) ... [2020-04-18 02:07:28,932 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 02:07:28,982 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 02:07:29,450 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:07:29,462 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 02:07:29,520 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:07:29,594 INFO L208 MainTranslator]: Completed translation [2020-04-18 02:07:29,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:07:29 WrapperNode [2020-04-18 02:07:29,595 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 02:07:29,596 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 02:07:29,596 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 02:07:29,596 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 02:07:29,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:07:29" (1/1) ... [2020-04-18 02:07:29,622 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:07:29" (1/1) ... [2020-04-18 02:07:29,645 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 02:07:29,646 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 02:07:29,646 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 02:07:29,646 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 02:07:29,655 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:07:29" (1/1) ... [2020-04-18 02:07:29,655 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:07:29" (1/1) ... [2020-04-18 02:07:29,658 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:07:29" (1/1) ... [2020-04-18 02:07:29,659 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:07:29" (1/1) ... [2020-04-18 02:07:29,665 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:07:29" (1/1) ... [2020-04-18 02:07:29,667 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:07:29" (1/1) ... [2020-04-18 02:07:29,669 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:07:29" (1/1) ... [2020-04-18 02:07:29,673 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 02:07:29,673 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 02:07:29,673 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 02:07:29,674 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 02:07:29,674 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:07:29" (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 [2020-04-18 02:07:29,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 02:07:29,738 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 02:07:29,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 02:07:29,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 02:07:29,738 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 02:07:29,739 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 02:07:29,739 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 02:07:29,739 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 02:07:29,739 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 02:07:29,739 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 02:07:29,739 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 02:07:29,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 02:07:29,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 02:07:29,742 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 02:07:30,155 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 02:07:30,155 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 02:07:30,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:07:30 BoogieIcfgContainer [2020-04-18 02:07:30,162 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 02:07:30,163 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 02:07:30,163 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 02:07:30,167 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 02:07:30,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 02:07:28" (1/3) ... [2020-04-18 02:07:30,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ee70740 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:07:30, skipping insertion in model container [2020-04-18 02:07:30,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:07:29" (2/3) ... [2020-04-18 02:07:30,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ee70740 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:07:30, skipping insertion in model container [2020-04-18 02:07:30,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:07:30" (3/3) ... [2020-04-18 02:07:30,171 INFO L109 eAbstractionObserver]: Analyzing ICFG safe004_tso.opt.i [2020-04-18 02:07:30,181 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 02:07:30,182 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 02:07:30,189 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 02:07:30,191 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 02:07:30,225 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:07:30,225 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:07:30,226 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:07:30,226 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:07:30,227 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:07:30,227 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:07:30,228 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:07:30,228 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:07:30,228 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:07:30,228 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:07:30,229 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:07:30,229 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:07:30,229 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:07:30,230 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:07:30,230 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:07:30,230 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:07:30,231 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:07:30,231 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:07:30,235 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:07:30,235 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:07:30,236 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:07:30,236 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:07:30,242 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:07:30,242 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:07:30,242 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:07:30,243 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:07:30,245 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:07:30,245 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:07:30,245 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:07:30,246 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:07:30,268 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 02:07:30,289 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 02:07:30,289 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 02:07:30,289 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 02:07:30,289 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 02:07:30,289 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 02:07:30,290 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 02:07:30,290 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 02:07:30,290 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 02:07:30,306 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-04-18 02:07:30,308 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-04-18 02:07:30,353 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-04-18 02:07:30,353 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:07:30,358 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 02:07:30,362 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-04-18 02:07:30,383 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-04-18 02:07:30,383 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:07:30,384 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 02:07:30,386 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 02:07:30,387 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 02:07:31,841 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-04-18 02:07:31,992 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2483 [2020-04-18 02:07:31,993 INFO L214 etLargeBlockEncoding]: Total number of compositions: 57 [2020-04-18 02:07:31,997 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-04-18 02:07:32,037 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-18 02:07:32,041 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-18 02:07:32,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 02:07:32,052 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:07:32,053 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:07:32,054 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:07:32,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:07:32,059 INFO L82 PathProgramCache]: Analyzing trace with hash -245765301, now seen corresponding path program 1 times [2020-04-18 02:07:32,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:07:32,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312215765] [2020-04-18 02:07:32,066 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:07:32,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:07:32,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:07:32,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312215765] [2020-04-18 02:07:32,305 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:07:32,305 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 02:07:32,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465936549] [2020-04-18 02:07:32,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:07:32,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:07:32,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:07:32,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:07:32,328 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-18 02:07:32,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:07:32,370 INFO L93 Difference]: Finished difference Result 266 states and 752 transitions. [2020-04-18 02:07:32,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:07:32,372 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-18 02:07:32,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:07:32,394 INFO L225 Difference]: With dead ends: 266 [2020-04-18 02:07:32,394 INFO L226 Difference]: Without dead ends: 202 [2020-04-18 02:07:32,396 INFO L678 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 [2020-04-18 02:07:32,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-04-18 02:07:32,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-04-18 02:07:32,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-04-18 02:07:32,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-04-18 02:07:32,483 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 8 [2020-04-18 02:07:32,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:07:32,485 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-04-18 02:07:32,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:07:32,485 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-04-18 02:07:32,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 02:07:32,487 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:07:32,487 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:07:32,487 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:07:32,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:07:32,488 INFO L82 PathProgramCache]: Analyzing trace with hash 42721384, now seen corresponding path program 1 times [2020-04-18 02:07:32,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:07:32,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133110439] [2020-04-18 02:07:32,489 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:07:32,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:07:32,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:07:32,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133110439] [2020-04-18 02:07:32,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:07:32,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:07:32,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127251815] [2020-04-18 02:07:32,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:07:32,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:07:32,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:07:32,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:07:32,595 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 4 states. [2020-04-18 02:07:32,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:07:32,625 INFO L93 Difference]: Finished difference Result 254 states and 666 transitions. [2020-04-18 02:07:32,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 02:07:32,626 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-04-18 02:07:32,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:07:32,628 INFO L225 Difference]: With dead ends: 254 [2020-04-18 02:07:32,628 INFO L226 Difference]: Without dead ends: 190 [2020-04-18 02:07:32,629 INFO L678 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 [2020-04-18 02:07:32,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-04-18 02:07:32,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2020-04-18 02:07:32,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-04-18 02:07:32,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 502 transitions. [2020-04-18 02:07:32,646 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 502 transitions. Word has length 10 [2020-04-18 02:07:32,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:07:32,646 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 502 transitions. [2020-04-18 02:07:32,646 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:07:32,647 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 502 transitions. [2020-04-18 02:07:32,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 02:07:32,648 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:07:32,648 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:07:32,649 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:07:32,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:07:32,649 INFO L82 PathProgramCache]: Analyzing trace with hash 1703756569, now seen corresponding path program 1 times [2020-04-18 02:07:32,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:07:32,650 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100030988] [2020-04-18 02:07:32,650 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:07:32,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:07:32,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:07:32,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100030988] [2020-04-18 02:07:32,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:07:32,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:07:32,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860253954] [2020-04-18 02:07:32,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:07:32,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:07:32,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:07:32,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:07:32,718 INFO L87 Difference]: Start difference. First operand 190 states and 502 transitions. Second operand 4 states. [2020-04-18 02:07:32,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:07:32,754 INFO L93 Difference]: Finished difference Result 286 states and 722 transitions. [2020-04-18 02:07:32,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:07:32,754 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-18 02:07:32,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:07:32,756 INFO L225 Difference]: With dead ends: 286 [2020-04-18 02:07:32,756 INFO L226 Difference]: Without dead ends: 178 [2020-04-18 02:07:32,757 INFO L678 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 [2020-04-18 02:07:32,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-04-18 02:07:32,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 154. [2020-04-18 02:07:32,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-04-18 02:07:32,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 376 transitions. [2020-04-18 02:07:32,770 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 376 transitions. Word has length 11 [2020-04-18 02:07:32,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:07:32,770 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 376 transitions. [2020-04-18 02:07:32,770 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:07:32,770 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 376 transitions. [2020-04-18 02:07:32,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 02:07:32,772 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:07:32,772 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:07:32,772 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:07:32,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:07:32,773 INFO L82 PathProgramCache]: Analyzing trace with hash -1787779324, now seen corresponding path program 1 times [2020-04-18 02:07:32,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:07:32,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813248762] [2020-04-18 02:07:32,773 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:07:32,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:07:32,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:07:32,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813248762] [2020-04-18 02:07:32,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:07:32,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:07:32,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622294420] [2020-04-18 02:07:32,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:07:32,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:07:32,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:07:32,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:07:32,827 INFO L87 Difference]: Start difference. First operand 154 states and 376 transitions. Second operand 3 states. [2020-04-18 02:07:32,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:07:32,848 INFO L93 Difference]: Finished difference Result 174 states and 416 transitions. [2020-04-18 02:07:32,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:07:32,848 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-04-18 02:07:32,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:07:32,849 INFO L225 Difference]: With dead ends: 174 [2020-04-18 02:07:32,849 INFO L226 Difference]: Without dead ends: 72 [2020-04-18 02:07:32,849 INFO L678 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 [2020-04-18 02:07:32,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-04-18 02:07:32,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-04-18 02:07:32,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-04-18 02:07:32,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 154 transitions. [2020-04-18 02:07:32,854 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 154 transitions. Word has length 12 [2020-04-18 02:07:32,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:07:32,855 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 154 transitions. [2020-04-18 02:07:32,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:07:32,855 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 154 transitions. [2020-04-18 02:07:32,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 02:07:32,856 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:07:32,856 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:07:32,856 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:07:32,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:07:32,857 INFO L82 PathProgramCache]: Analyzing trace with hash 413415217, now seen corresponding path program 1 times [2020-04-18 02:07:32,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:07:32,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173563289] [2020-04-18 02:07:32,857 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:07:32,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:07:32,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:07:32,927 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173563289] [2020-04-18 02:07:32,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:07:32,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:07:32,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984854848] [2020-04-18 02:07:32,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:07:32,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:07:32,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:07:32,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:07:32,930 INFO L87 Difference]: Start difference. First operand 72 states and 154 transitions. Second operand 4 states. [2020-04-18 02:07:32,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:07:32,965 INFO L93 Difference]: Finished difference Result 85 states and 167 transitions. [2020-04-18 02:07:32,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:07:32,966 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-04-18 02:07:32,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:07:32,967 INFO L225 Difference]: With dead ends: 85 [2020-04-18 02:07:32,967 INFO L226 Difference]: Without dead ends: 61 [2020-04-18 02:07:32,968 INFO L678 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 [2020-04-18 02:07:32,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-04-18 02:07:32,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-04-18 02:07:32,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-04-18 02:07:32,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 118 transitions. [2020-04-18 02:07:32,972 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 118 transitions. Word has length 13 [2020-04-18 02:07:32,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:07:32,973 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 118 transitions. [2020-04-18 02:07:32,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:07:32,973 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 118 transitions. [2020-04-18 02:07:32,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 02:07:32,974 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:07:32,974 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:07:32,974 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:07:32,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:07:32,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1574125730, now seen corresponding path program 1 times [2020-04-18 02:07:32,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:07:32,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036659506] [2020-04-18 02:07:32,975 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:07:32,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:07:33,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:07:33,043 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036659506] [2020-04-18 02:07:33,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:07:33,044 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:07:33,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380313315] [2020-04-18 02:07:33,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:07:33,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:07:33,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:07:33,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:07:33,045 INFO L87 Difference]: Start difference. First operand 61 states and 118 transitions. Second operand 5 states. [2020-04-18 02:07:33,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:07:33,097 INFO L93 Difference]: Finished difference Result 62 states and 108 transitions. [2020-04-18 02:07:33,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 02:07:33,098 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-04-18 02:07:33,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:07:33,098 INFO L225 Difference]: With dead ends: 62 [2020-04-18 02:07:33,098 INFO L226 Difference]: Without dead ends: 47 [2020-04-18 02:07:33,099 INFO L678 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 [2020-04-18 02:07:33,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-04-18 02:07:33,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-04-18 02:07:33,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-04-18 02:07:33,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 78 transitions. [2020-04-18 02:07:33,102 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 78 transitions. Word has length 14 [2020-04-18 02:07:33,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:07:33,102 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 78 transitions. [2020-04-18 02:07:33,102 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:07:33,102 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 78 transitions. [2020-04-18 02:07:33,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 02:07:33,103 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:07:33,103 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:07:33,103 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:07:33,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:07:33,104 INFO L82 PathProgramCache]: Analyzing trace with hash 1126720068, now seen corresponding path program 1 times [2020-04-18 02:07:33,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:07:33,104 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168681438] [2020-04-18 02:07:33,105 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:07:33,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:07:33,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:07:33,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168681438] [2020-04-18 02:07:33,165 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:07:33,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 02:07:33,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361442164] [2020-04-18 02:07:33,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 02:07:33,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:07:33,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 02:07:33,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-18 02:07:33,166 INFO L87 Difference]: Start difference. First operand 47 states and 78 transitions. Second operand 6 states. [2020-04-18 02:07:33,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:07:33,225 INFO L93 Difference]: Finished difference Result 44 states and 70 transitions. [2020-04-18 02:07:33,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 02:07:33,226 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-04-18 02:07:33,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:07:33,227 INFO L225 Difference]: With dead ends: 44 [2020-04-18 02:07:33,227 INFO L226 Difference]: Without dead ends: 38 [2020-04-18 02:07:33,227 INFO L678 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 [2020-04-18 02:07:33,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-04-18 02:07:33,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-04-18 02:07:33,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-04-18 02:07:33,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 60 transitions. [2020-04-18 02:07:33,230 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 60 transitions. Word has length 15 [2020-04-18 02:07:33,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:07:33,230 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 60 transitions. [2020-04-18 02:07:33,230 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 02:07:33,231 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 60 transitions. [2020-04-18 02:07:33,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 02:07:33,231 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:07:33,231 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:07:33,232 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:07:33,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:07:33,232 INFO L82 PathProgramCache]: Analyzing trace with hash 392863110, now seen corresponding path program 1 times [2020-04-18 02:07:33,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:07:33,233 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826338211] [2020-04-18 02:07:33,233 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:07:33,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:07:33,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:07:33,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826338211] [2020-04-18 02:07:33,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:07:33,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:07:33,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323504733] [2020-04-18 02:07:33,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:07:33,269 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:07:33,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:07:33,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:07:33,270 INFO L87 Difference]: Start difference. First operand 38 states and 60 transitions. Second operand 3 states. [2020-04-18 02:07:33,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:07:33,280 INFO L93 Difference]: Finished difference Result 37 states and 59 transitions. [2020-04-18 02:07:33,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:07:33,281 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-04-18 02:07:33,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:07:33,281 INFO L225 Difference]: With dead ends: 37 [2020-04-18 02:07:33,282 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 02:07:33,282 INFO L678 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 [2020-04-18 02:07:33,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 02:07:33,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 02:07:33,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 02:07:33,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 02:07:33,283 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-04-18 02:07:33,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:07:33,283 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 02:07:33,283 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:07:33,283 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 02:07:33,284 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 02:07:33,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 02:07:33 BasicIcfg [2020-04-18 02:07:33,288 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 02:07:33,295 INFO L168 Benchmark]: Toolchain (without parser) took 4395.06 ms. Allocated memory was 137.4 MB in the beginning and 250.1 MB in the end (delta: 112.7 MB). Free memory was 99.0 MB in the beginning and 90.5 MB in the end (delta: 8.5 MB). Peak memory consumption was 121.2 MB. Max. memory is 7.1 GB. [2020-04-18 02:07:33,296 INFO L168 Benchmark]: CDTParser took 1.42 ms. Allocated memory is still 137.4 MB. Free memory was 119.3 MB in the beginning and 119.0 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-04-18 02:07:33,298 INFO L168 Benchmark]: CACSL2BoogieTranslator took 678.48 ms. Allocated memory was 137.4 MB in the beginning and 200.8 MB in the end (delta: 63.4 MB). Free memory was 97.1 MB in the beginning and 157.9 MB in the end (delta: -60.7 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. [2020-04-18 02:07:33,300 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.86 ms. Allocated memory is still 200.8 MB. Free memory was 157.9 MB in the beginning and 155.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-04-18 02:07:33,302 INFO L168 Benchmark]: Boogie Preprocessor took 27.16 ms. Allocated memory is still 200.8 MB. Free memory was 155.1 MB in the beginning and 153.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 02:07:33,305 INFO L168 Benchmark]: RCFGBuilder took 488.79 ms. Allocated memory is still 200.8 MB. Free memory was 153.8 MB in the beginning and 131.6 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-04-18 02:07:33,306 INFO L168 Benchmark]: TraceAbstraction took 3125.09 ms. Allocated memory was 200.8 MB in the beginning and 250.1 MB in the end (delta: 49.3 MB). Free memory was 131.6 MB in the beginning and 90.5 MB in the end (delta: 41.1 MB). Peak memory consumption was 90.4 MB. Max. memory is 7.1 GB. [2020-04-18 02:07:33,317 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.42 ms. Allocated memory is still 137.4 MB. Free memory was 119.3 MB in the beginning and 119.0 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 678.48 ms. Allocated memory was 137.4 MB in the beginning and 200.8 MB in the end (delta: 63.4 MB). Free memory was 97.1 MB in the beginning and 157.9 MB in the end (delta: -60.7 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 49.86 ms. Allocated memory is still 200.8 MB. Free memory was 157.9 MB in the beginning and 155.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.16 ms. Allocated memory is still 200.8 MB. Free memory was 155.1 MB in the beginning and 153.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 488.79 ms. Allocated memory is still 200.8 MB. Free memory was 153.8 MB in the beginning and 131.6 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3125.09 ms. Allocated memory was 200.8 MB in the beginning and 250.1 MB in the end (delta: 49.3 MB). Free memory was 131.6 MB in the beginning and 90.5 MB in the end (delta: 41.1 MB). Peak memory consumption was 90.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 77 ProgramPointsBefore, 31 ProgramPointsAfterwards, 69 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 13 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 656 VarBasedMoverChecksPositive, 23 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2483 CheckedPairsTotal, 57 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, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.9s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 155 SDtfs, 112 SDslu, 167 SDs, 0 SdLazy, 114 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 24 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 100 NumberOfCodeBlocks, 100 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 92 ConstructedInterpolants, 0 QuantifiedInterpolants, 3270 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...