/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/mix044_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 12:03:09,624 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 12:03:09,627 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 12:03:09,651 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 12:03:09,651 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 12:03:09,652 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 12:03:09,654 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 12:03:09,655 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 12:03:09,657 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 12:03:09,658 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 12:03:09,659 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 12:03:09,660 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 12:03:09,660 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 12:03:09,664 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 12:03:09,665 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 12:03:09,669 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 12:03:09,670 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 12:03:09,672 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 12:03:09,674 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 12:03:09,679 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 12:03:09,683 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 12:03:09,684 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 12:03:09,686 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 12:03:09,687 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 12:03:09,692 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 12:03:09,692 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 12:03:09,693 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 12:03:09,694 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 12:03:09,695 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 12:03:09,696 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 12:03:09,696 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 12:03:09,697 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 12:03:09,699 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 12:03:09,700 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 12:03:09,701 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 12:03:09,701 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 12:03:09,702 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 12:03:09,702 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 12:03:09,703 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 12:03:09,704 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 12:03:09,705 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 12:03:09,706 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf [2020-10-16 12:03:09,762 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 12:03:09,762 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 12:03:09,764 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 12:03:09,764 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 12:03:09,764 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 12:03:09,765 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 12:03:09,765 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 12:03:09,765 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 12:03:09,765 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 12:03:09,765 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 12:03:09,765 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 12:03:09,766 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 12:03:09,766 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 12:03:09,767 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 12:03:09,767 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 12:03:09,768 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 12:03:09,768 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 12:03:09,768 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 12:03:09,769 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 12:03:09,769 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 12:03:09,769 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 12:03:09,769 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 12:03:09,769 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 12:03:09,770 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-16 12:03:09,770 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 12:03:09,770 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 12:03:09,770 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 12:03:09,770 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-16 12:03:09,771 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 12:03:10,076 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 12:03:10,089 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 12:03:10,093 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 12:03:10,095 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 12:03:10,095 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 12:03:10,096 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix044_pso.opt.i [2020-10-16 12:03:10,174 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2624fb8ed/0430493b222c42e2bcbea420179398e0/FLAG348e16d75 [2020-10-16 12:03:10,721 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 12:03:10,722 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/mix044_pso.opt.i [2020-10-16 12:03:10,745 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2624fb8ed/0430493b222c42e2bcbea420179398e0/FLAG348e16d75 [2020-10-16 12:03:11,010 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2624fb8ed/0430493b222c42e2bcbea420179398e0 [2020-10-16 12:03:11,018 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 12:03:11,020 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 12:03:11,022 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 12:03:11,022 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 12:03:11,026 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 12:03:11,027 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:03:11" (1/1) ... [2020-10-16 12:03:11,030 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@106f3b95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:03:11, skipping insertion in model container [2020-10-16 12:03:11,030 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:03:11" (1/1) ... [2020-10-16 12:03:11,038 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 12:03:11,104 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 12:03:11,684 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 12:03:11,698 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 12:03:11,762 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 12:03:11,841 INFO L208 MainTranslator]: Completed translation [2020-10-16 12:03:11,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:03:11 WrapperNode [2020-10-16 12:03:11,842 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 12:03:11,843 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 12:03:11,843 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 12:03:11,843 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 12:03:11,852 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:03:11" (1/1) ... [2020-10-16 12:03:11,871 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:03:11" (1/1) ... [2020-10-16 12:03:11,907 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 12:03:11,908 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 12:03:11,908 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 12:03:11,908 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 12:03:11,917 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:03:11" (1/1) ... [2020-10-16 12:03:11,917 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:03:11" (1/1) ... [2020-10-16 12:03:11,922 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:03:11" (1/1) ... [2020-10-16 12:03:11,923 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:03:11" (1/1) ... [2020-10-16 12:03:11,934 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:03:11" (1/1) ... [2020-10-16 12:03:11,939 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:03:11" (1/1) ... [2020-10-16 12:03:11,943 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:03:11" (1/1) ... [2020-10-16 12:03:11,949 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 12:03:11,950 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 12:03:11,950 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 12:03:11,950 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 12:03:11,951 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:03:11" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:03:12,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 12:03:12,020 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 12:03:12,020 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 12:03:12,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 12:03:12,020 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 12:03:12,021 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 12:03:12,021 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 12:03:12,021 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 12:03:12,021 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 12:03:12,021 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 12:03:12,022 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-10-16 12:03:12,022 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-10-16 12:03:12,022 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 12:03:12,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 12:03:12,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 12:03:12,024 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 12:03:14,006 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 12:03:14,007 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-16 12:03:14,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:03:14 BoogieIcfgContainer [2020-10-16 12:03:14,009 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 12:03:14,011 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 12:03:14,011 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 12:03:14,015 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 12:03:14,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 12:03:11" (1/3) ... [2020-10-16 12:03:14,016 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@545e3128 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:03:14, skipping insertion in model container [2020-10-16 12:03:14,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:03:11" (2/3) ... [2020-10-16 12:03:14,017 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@545e3128 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:03:14, skipping insertion in model container [2020-10-16 12:03:14,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:03:14" (3/3) ... [2020-10-16 12:03:14,019 INFO L111 eAbstractionObserver]: Analyzing ICFG mix044_pso.opt.i [2020-10-16 12:03:14,032 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 12:03:14,033 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-16 12:03:14,042 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-16 12:03:14,043 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 12:03:14,076 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:03:14,076 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:03:14,077 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:03:14,077 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:03:14,077 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:03:14,077 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:03:14,078 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:03:14,078 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:03:14,078 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:03:14,078 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:03:14,079 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:03:14,079 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:03:14,079 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:03:14,079 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:03:14,080 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:03:14,080 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:03:14,080 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:03:14,080 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:03:14,080 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:03:14,081 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:03:14,081 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:03:14,081 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:03:14,081 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:03:14,082 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:03:14,082 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:03:14,082 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:03:14,083 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:03:14,083 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:03:14,083 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:03:14,083 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:03:14,083 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:03:14,084 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:03:14,084 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:03:14,084 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:03:14,084 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:03:14,085 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:03:14,085 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:03:14,085 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:03:14,085 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:03:14,085 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:03:14,086 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:03:14,086 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:03:14,090 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:03:14,091 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:03:14,091 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:03:14,091 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:03:14,096 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:03:14,096 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:03:14,096 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:03:14,096 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:03:14,097 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:03:14,097 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:03:14,097 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:03:14,097 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:03:14,097 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:03:14,097 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:03:14,099 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:03:14,099 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:03:14,100 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:03:14,100 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:03:14,100 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:03:14,100 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:03:14,100 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:03:14,101 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:03:14,101 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:03:14,101 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:03:14,101 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:03:14,101 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:03:14,103 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:03:14,103 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:03:14,103 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:03:14,104 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:03:14,105 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 12:03:14,119 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-16 12:03:14,142 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 12:03:14,142 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 12:03:14,142 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 12:03:14,142 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 12:03:14,142 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 12:03:14,143 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 12:03:14,143 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 12:03:14,143 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 12:03:14,158 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 12:03:14,158 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 123 places, 112 transitions, 244 flow [2020-10-16 12:03:14,161 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 123 places, 112 transitions, 244 flow [2020-10-16 12:03:14,163 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 123 places, 112 transitions, 244 flow [2020-10-16 12:03:14,219 INFO L129 PetriNetUnfolder]: 2/108 cut-off events. [2020-10-16 12:03:14,219 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 12:03:14,225 INFO L80 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 108 events. 2/108 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 84 event pairs, 0 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 75. Up to 2 conditions per place. [2020-10-16 12:03:14,229 INFO L117 LiptonReduction]: Number of co-enabled transitions 2540 [2020-10-16 12:03:14,487 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2020-10-16 12:03:14,919 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 58 [2020-10-16 12:03:15,072 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2020-10-16 12:03:16,577 WARN L193 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 230 DAG size of output: 190 [2020-10-16 12:03:16,600 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 2, 6, 5, 2, 2, 1] term [2020-10-16 12:03:16,601 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 12:03:16,604 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 2, 6, 5, 1] term [2020-10-16 12:03:16,604 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 12:03:17,905 WARN L193 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 148 DAG size of output: 127 [2020-10-16 12:03:19,746 WARN L193 SmtUtils]: Spent 923.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 129 [2020-10-16 12:03:20,061 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-16 12:03:20,732 WARN L193 SmtUtils]: Spent 665.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 112 [2020-10-16 12:03:21,047 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-16 12:03:21,760 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-16 12:03:22,099 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-16 12:03:22,528 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 97 [2020-10-16 12:03:22,667 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-16 12:03:22,675 INFO L132 LiptonReduction]: Checked pairs total: 6806 [2020-10-16 12:03:22,675 INFO L134 LiptonReduction]: Total number of compositions: 92 [2020-10-16 12:03:22,682 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 45 places, 32 transitions, 84 flow [2020-10-16 12:03:22,885 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 3002 states. [2020-10-16 12:03:22,888 INFO L276 IsEmpty]: Start isEmpty. Operand 3002 states. [2020-10-16 12:03:22,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 12:03:22,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:03:22,899 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:03:22,900 INFO L429 AbstractCegarLoop]: === Iteration 1 === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:03:22,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:03:22,907 INFO L82 PathProgramCache]: Analyzing trace with hash -681881970, now seen corresponding path program 1 times [2020-10-16 12:03:22,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:03:22,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098190452] [2020-10-16 12:03:22,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:03:23,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:03:23,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:03:23,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098190452] [2020-10-16 12:03:23,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:03:23,257 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 12:03:23,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530081975] [2020-10-16 12:03:23,263 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:03:23,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:03:23,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:03:23,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:03:23,282 INFO L87 Difference]: Start difference. First operand 3002 states. Second operand 3 states. [2020-10-16 12:03:23,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:03:23,456 INFO L93 Difference]: Finished difference Result 2602 states and 10064 transitions. [2020-10-16 12:03:23,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:03:23,459 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-16 12:03:23,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:03:23,512 INFO L225 Difference]: With dead ends: 2602 [2020-10-16 12:03:23,513 INFO L226 Difference]: Without dead ends: 2122 [2020-10-16 12:03:23,515 INFO L677 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 [2020-10-16 12:03:23,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2122 states. [2020-10-16 12:03:23,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2122 to 2122. [2020-10-16 12:03:23,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2122 states. [2020-10-16 12:03:23,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2122 states to 2122 states and 8080 transitions. [2020-10-16 12:03:23,697 INFO L78 Accepts]: Start accepts. Automaton has 2122 states and 8080 transitions. Word has length 9 [2020-10-16 12:03:23,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:03:23,698 INFO L481 AbstractCegarLoop]: Abstraction has 2122 states and 8080 transitions. [2020-10-16 12:03:23,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:03:23,699 INFO L276 IsEmpty]: Start isEmpty. Operand 2122 states and 8080 transitions. [2020-10-16 12:03:23,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 12:03:23,704 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:03:23,704 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:03:23,704 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 12:03:23,704 INFO L429 AbstractCegarLoop]: === Iteration 2 === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:03:23,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:03:23,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1841504421, now seen corresponding path program 1 times [2020-10-16 12:03:23,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:03:23,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394404013] [2020-10-16 12:03:23,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:03:23,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:03:23,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:03:23,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394404013] [2020-10-16 12:03:23,847 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:03:23,847 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 12:03:23,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411035493] [2020-10-16 12:03:23,849 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:03:23,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:03:23,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:03:23,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:03:23,851 INFO L87 Difference]: Start difference. First operand 2122 states and 8080 transitions. Second operand 3 states. [2020-10-16 12:03:23,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:03:23,902 INFO L93 Difference]: Finished difference Result 2042 states and 7736 transitions. [2020-10-16 12:03:23,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:03:23,903 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-16 12:03:23,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:03:23,921 INFO L225 Difference]: With dead ends: 2042 [2020-10-16 12:03:23,921 INFO L226 Difference]: Without dead ends: 2042 [2020-10-16 12:03:23,922 INFO L677 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 [2020-10-16 12:03:23,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2042 states. [2020-10-16 12:03:23,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2042 to 2042. [2020-10-16 12:03:23,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2042 states. [2020-10-16 12:03:24,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2042 states to 2042 states and 7736 transitions. [2020-10-16 12:03:24,008 INFO L78 Accepts]: Start accepts. Automaton has 2042 states and 7736 transitions. Word has length 11 [2020-10-16 12:03:24,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:03:24,008 INFO L481 AbstractCegarLoop]: Abstraction has 2042 states and 7736 transitions. [2020-10-16 12:03:24,008 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:03:24,009 INFO L276 IsEmpty]: Start isEmpty. Operand 2042 states and 7736 transitions. [2020-10-16 12:03:24,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 12:03:24,012 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:03:24,012 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:03:24,012 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 12:03:24,012 INFO L429 AbstractCegarLoop]: === Iteration 3 === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:03:24,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:03:24,013 INFO L82 PathProgramCache]: Analyzing trace with hash 1250521648, now seen corresponding path program 1 times [2020-10-16 12:03:24,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:03:24,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647151803] [2020-10-16 12:03:24,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:03:24,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:03:24,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:03:24,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647151803] [2020-10-16 12:03:24,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:03:24,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 12:03:24,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040787862] [2020-10-16 12:03:24,089 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:03:24,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:03:24,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:03:24,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:03:24,090 INFO L87 Difference]: Start difference. First operand 2042 states and 7736 transitions. Second operand 3 states. [2020-10-16 12:03:24,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:03:24,118 INFO L93 Difference]: Finished difference Result 1962 states and 7392 transitions. [2020-10-16 12:03:24,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:03:24,120 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-10-16 12:03:24,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:03:24,137 INFO L225 Difference]: With dead ends: 1962 [2020-10-16 12:03:24,138 INFO L226 Difference]: Without dead ends: 1962 [2020-10-16 12:03:24,138 INFO L677 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 [2020-10-16 12:03:24,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1962 states. [2020-10-16 12:03:24,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1962 to 1962. [2020-10-16 12:03:24,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1962 states. [2020-10-16 12:03:24,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1962 states to 1962 states and 7392 transitions. [2020-10-16 12:03:24,219 INFO L78 Accepts]: Start accepts. Automaton has 1962 states and 7392 transitions. Word has length 12 [2020-10-16 12:03:24,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:03:24,220 INFO L481 AbstractCegarLoop]: Abstraction has 1962 states and 7392 transitions. [2020-10-16 12:03:24,220 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:03:24,220 INFO L276 IsEmpty]: Start isEmpty. Operand 1962 states and 7392 transitions. [2020-10-16 12:03:24,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:03:24,225 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:03:24,225 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:03:24,226 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 12:03:24,229 INFO L429 AbstractCegarLoop]: === Iteration 4 === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:03:24,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:03:24,230 INFO L82 PathProgramCache]: Analyzing trace with hash 110610062, now seen corresponding path program 1 times [2020-10-16 12:03:24,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:03:24,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275446523] [2020-10-16 12:03:24,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:03:24,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:03:24,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:03:24,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275446523] [2020-10-16 12:03:24,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:03:24,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:03:24,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21108833] [2020-10-16 12:03:24,359 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:03:24,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:03:24,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:03:24,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:03:24,360 INFO L87 Difference]: Start difference. First operand 1962 states and 7392 transitions. Second operand 4 states. [2020-10-16 12:03:24,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:03:24,449 INFO L93 Difference]: Finished difference Result 1922 states and 7210 transitions. [2020-10-16 12:03:24,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 12:03:24,450 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-16 12:03:24,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:03:24,468 INFO L225 Difference]: With dead ends: 1922 [2020-10-16 12:03:24,468 INFO L226 Difference]: Without dead ends: 1922 [2020-10-16 12:03:24,469 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 [2020-10-16 12:03:24,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1922 states. [2020-10-16 12:03:24,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1922 to 1922. [2020-10-16 12:03:24,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1922 states. [2020-10-16 12:03:24,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1922 states to 1922 states and 7210 transitions. [2020-10-16 12:03:24,547 INFO L78 Accepts]: Start accepts. Automaton has 1922 states and 7210 transitions. Word has length 13 [2020-10-16 12:03:24,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:03:24,548 INFO L481 AbstractCegarLoop]: Abstraction has 1922 states and 7210 transitions. [2020-10-16 12:03:24,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:03:24,548 INFO L276 IsEmpty]: Start isEmpty. Operand 1922 states and 7210 transitions. [2020-10-16 12:03:24,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:03:24,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:03:24,551 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:03:24,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 12:03:24,551 INFO L429 AbstractCegarLoop]: === Iteration 5 === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:03:24,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:03:24,552 INFO L82 PathProgramCache]: Analyzing trace with hash -783581312, now seen corresponding path program 1 times [2020-10-16 12:03:24,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:03:24,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363561628] [2020-10-16 12:03:24,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:03:24,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:03:24,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:03:24,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363561628] [2020-10-16 12:03:24,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:03:24,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:03:24,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931130646] [2020-10-16 12:03:24,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 12:03:24,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:03:24,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 12:03:24,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:03:24,665 INFO L87 Difference]: Start difference. First operand 1922 states and 7210 transitions. Second operand 5 states. [2020-10-16 12:03:24,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:03:24,758 INFO L93 Difference]: Finished difference Result 1866 states and 6962 transitions. [2020-10-16 12:03:24,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 12:03:24,759 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-16 12:03:24,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:03:24,777 INFO L225 Difference]: With dead ends: 1866 [2020-10-16 12:03:24,777 INFO L226 Difference]: Without dead ends: 1866 [2020-10-16 12:03:24,778 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-16 12:03:24,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1866 states. [2020-10-16 12:03:24,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1866 to 1866. [2020-10-16 12:03:24,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1866 states. [2020-10-16 12:03:24,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1866 states to 1866 states and 6962 transitions. [2020-10-16 12:03:24,913 INFO L78 Accepts]: Start accepts. Automaton has 1866 states and 6962 transitions. Word has length 14 [2020-10-16 12:03:24,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:03:24,914 INFO L481 AbstractCegarLoop]: Abstraction has 1866 states and 6962 transitions. [2020-10-16 12:03:24,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 12:03:24,914 INFO L276 IsEmpty]: Start isEmpty. Operand 1866 states and 6962 transitions. [2020-10-16 12:03:24,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-16 12:03:24,918 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:03:24,918 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:03:24,918 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 12:03:24,919 INFO L429 AbstractCegarLoop]: === Iteration 6 === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:03:24,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:03:24,919 INFO L82 PathProgramCache]: Analyzing trace with hash -1465931681, now seen corresponding path program 1 times [2020-10-16 12:03:24,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:03:24,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649879106] [2020-10-16 12:03:24,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:03:24,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:03:25,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:03:25,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649879106] [2020-10-16 12:03:25,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:03:25,036 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:03:25,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126556264] [2020-10-16 12:03:25,037 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:03:25,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:03:25,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:03:25,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:03:25,038 INFO L87 Difference]: Start difference. First operand 1866 states and 6962 transitions. Second operand 4 states. [2020-10-16 12:03:25,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:03:25,094 INFO L93 Difference]: Finished difference Result 1930 states and 6566 transitions. [2020-10-16 12:03:25,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 12:03:25,095 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-10-16 12:03:25,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:03:25,107 INFO L225 Difference]: With dead ends: 1930 [2020-10-16 12:03:25,108 INFO L226 Difference]: Without dead ends: 1450 [2020-10-16 12:03:25,108 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 [2020-10-16 12:03:25,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1450 states. [2020-10-16 12:03:25,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1450 to 1450. [2020-10-16 12:03:25,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1450 states. [2020-10-16 12:03:25,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1450 states to 1450 states and 4882 transitions. [2020-10-16 12:03:25,157 INFO L78 Accepts]: Start accepts. Automaton has 1450 states and 4882 transitions. Word has length 16 [2020-10-16 12:03:25,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:03:25,158 INFO L481 AbstractCegarLoop]: Abstraction has 1450 states and 4882 transitions. [2020-10-16 12:03:25,158 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:03:25,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states and 4882 transitions. [2020-10-16 12:03:25,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 12:03:25,162 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:03:25,162 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:03:25,162 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 12:03:25,162 INFO L429 AbstractCegarLoop]: === Iteration 7 === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:03:25,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:03:25,163 INFO L82 PathProgramCache]: Analyzing trace with hash 1801064632, now seen corresponding path program 1 times [2020-10-16 12:03:25,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:03:25,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025026716] [2020-10-16 12:03:25,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:03:25,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:03:25,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:03:25,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025026716] [2020-10-16 12:03:25,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:03:25,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 12:03:25,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136997293] [2020-10-16 12:03:25,284 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 12:03:25,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:03:25,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 12:03:25,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:03:25,285 INFO L87 Difference]: Start difference. First operand 1450 states and 4882 transitions. Second operand 5 states. [2020-10-16 12:03:25,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:03:25,349 INFO L93 Difference]: Finished difference Result 1251 states and 3871 transitions. [2020-10-16 12:03:25,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 12:03:25,350 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-16 12:03:25,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:03:25,357 INFO L225 Difference]: With dead ends: 1251 [2020-10-16 12:03:25,357 INFO L226 Difference]: Without dead ends: 951 [2020-10-16 12:03:25,358 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 [2020-10-16 12:03:25,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 951 states. [2020-10-16 12:03:25,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 951 to 951. [2020-10-16 12:03:25,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 951 states. [2020-10-16 12:03:25,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 951 states to 951 states and 2886 transitions. [2020-10-16 12:03:25,386 INFO L78 Accepts]: Start accepts. Automaton has 951 states and 2886 transitions. Word has length 17 [2020-10-16 12:03:25,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:03:25,386 INFO L481 AbstractCegarLoop]: Abstraction has 951 states and 2886 transitions. [2020-10-16 12:03:25,386 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 12:03:25,386 INFO L276 IsEmpty]: Start isEmpty. Operand 951 states and 2886 transitions. [2020-10-16 12:03:25,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 12:03:25,389 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:03:25,389 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:03:25,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 12:03:25,389 INFO L429 AbstractCegarLoop]: === Iteration 8 === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:03:25,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:03:25,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1553780394, now seen corresponding path program 1 times [2020-10-16 12:03:25,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:03:25,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539688864] [2020-10-16 12:03:25,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:03:25,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:03:25,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:03:25,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539688864] [2020-10-16 12:03:25,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:03:25,501 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 12:03:25,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939841363] [2020-10-16 12:03:25,502 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 12:03:25,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:03:25,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 12:03:25,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 12:03:25,503 INFO L87 Difference]: Start difference. First operand 951 states and 2886 transitions. Second operand 6 states. [2020-10-16 12:03:25,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:03:25,575 INFO L93 Difference]: Finished difference Result 827 states and 2481 transitions. [2020-10-16 12:03:25,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 12:03:25,576 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-10-16 12:03:25,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:03:25,581 INFO L225 Difference]: With dead ends: 827 [2020-10-16 12:03:25,581 INFO L226 Difference]: Without dead ends: 728 [2020-10-16 12:03:25,582 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-16 12:03:25,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2020-10-16 12:03:25,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 728. [2020-10-16 12:03:25,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 728 states. [2020-10-16 12:03:25,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 2217 transitions. [2020-10-16 12:03:25,602 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 2217 transitions. Word has length 19 [2020-10-16 12:03:25,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:03:25,602 INFO L481 AbstractCegarLoop]: Abstraction has 728 states and 2217 transitions. [2020-10-16 12:03:25,602 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 12:03:25,603 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 2217 transitions. [2020-10-16 12:03:25,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-16 12:03:25,605 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:03:25,605 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:03:25,605 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 12:03:25,605 INFO L429 AbstractCegarLoop]: === Iteration 9 === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:03:25,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:03:25,606 INFO L82 PathProgramCache]: Analyzing trace with hash 283505508, now seen corresponding path program 1 times [2020-10-16 12:03:25,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:03:25,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582032720] [2020-10-16 12:03:25,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:03:25,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:03:25,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:03:25,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582032720] [2020-10-16 12:03:25,679 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:03:25,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:03:25,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448913239] [2020-10-16 12:03:25,679 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 12:03:25,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:03:25,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 12:03:25,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:03:25,680 INFO L87 Difference]: Start difference. First operand 728 states and 2217 transitions. Second operand 5 states. [2020-10-16 12:03:25,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:03:25,728 INFO L93 Difference]: Finished difference Result 935 states and 2784 transitions. [2020-10-16 12:03:25,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 12:03:25,729 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-10-16 12:03:25,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:03:25,733 INFO L225 Difference]: With dead ends: 935 [2020-10-16 12:03:25,734 INFO L226 Difference]: Without dead ends: 731 [2020-10-16 12:03:25,734 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-10-16 12:03:25,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2020-10-16 12:03:25,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 728. [2020-10-16 12:03:25,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 728 states. [2020-10-16 12:03:25,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 2155 transitions. [2020-10-16 12:03:25,754 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 2155 transitions. Word has length 22 [2020-10-16 12:03:25,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:03:25,754 INFO L481 AbstractCegarLoop]: Abstraction has 728 states and 2155 transitions. [2020-10-16 12:03:25,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 12:03:25,755 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 2155 transitions. [2020-10-16 12:03:25,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-16 12:03:25,757 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:03:25,757 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:03:25,758 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 12:03:25,758 INFO L429 AbstractCegarLoop]: === Iteration 10 === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:03:25,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:03:25,758 INFO L82 PathProgramCache]: Analyzing trace with hash -1488729098, now seen corresponding path program 2 times [2020-10-16 12:03:25,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:03:25,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574947734] [2020-10-16 12:03:25,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:03:25,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:03:25,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:03:25,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574947734] [2020-10-16 12:03:25,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:03:25,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:03:25,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052427501] [2020-10-16 12:03:25,823 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 12:03:25,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:03:25,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 12:03:25,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:03:25,823 INFO L87 Difference]: Start difference. First operand 728 states and 2155 transitions. Second operand 5 states. [2020-10-16 12:03:25,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:03:25,913 INFO L93 Difference]: Finished difference Result 1007 states and 2880 transitions. [2020-10-16 12:03:25,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 12:03:25,914 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-10-16 12:03:25,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:03:25,918 INFO L225 Difference]: With dead ends: 1007 [2020-10-16 12:03:25,918 INFO L226 Difference]: Without dead ends: 648 [2020-10-16 12:03:25,918 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 12:03:25,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2020-10-16 12:03:25,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 646. [2020-10-16 12:03:25,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 646 states. [2020-10-16 12:03:25,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 1737 transitions. [2020-10-16 12:03:25,934 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 1737 transitions. Word has length 22 [2020-10-16 12:03:25,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:03:25,934 INFO L481 AbstractCegarLoop]: Abstraction has 646 states and 1737 transitions. [2020-10-16 12:03:25,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 12:03:25,935 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 1737 transitions. [2020-10-16 12:03:25,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-16 12:03:25,937 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:03:25,937 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:03:25,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-16 12:03:25,937 INFO L429 AbstractCegarLoop]: === Iteration 11 === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:03:25,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:03:25,938 INFO L82 PathProgramCache]: Analyzing trace with hash -1526885234, now seen corresponding path program 3 times [2020-10-16 12:03:25,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:03:25,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86947453] [2020-10-16 12:03:25,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:03:25,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:03:26,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:03:26,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86947453] [2020-10-16 12:03:26,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:03:26,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-16 12:03:26,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321644263] [2020-10-16 12:03:26,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 12:03:26,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:03:26,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 12:03:26,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-16 12:03:26,040 INFO L87 Difference]: Start difference. First operand 646 states and 1737 transitions. Second operand 7 states. [2020-10-16 12:03:26,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:03:26,116 INFO L93 Difference]: Finished difference Result 620 states and 1685 transitions. [2020-10-16 12:03:26,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-16 12:03:26,118 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2020-10-16 12:03:26,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:03:26,119 INFO L225 Difference]: With dead ends: 620 [2020-10-16 12:03:26,119 INFO L226 Difference]: Without dead ends: 184 [2020-10-16 12:03:26,120 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-16 12:03:26,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-10-16 12:03:26,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2020-10-16 12:03:26,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-10-16 12:03:26,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 454 transitions. [2020-10-16 12:03:26,125 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 454 transitions. Word has length 22 [2020-10-16 12:03:26,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:03:26,125 INFO L481 AbstractCegarLoop]: Abstraction has 184 states and 454 transitions. [2020-10-16 12:03:26,126 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 12:03:26,126 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 454 transitions. [2020-10-16 12:03:26,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-16 12:03:26,127 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:03:26,127 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:03:26,127 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-16 12:03:26,127 INFO L429 AbstractCegarLoop]: === Iteration 12 === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:03:26,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:03:26,128 INFO L82 PathProgramCache]: Analyzing trace with hash 741210188, now seen corresponding path program 1 times [2020-10-16 12:03:26,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:03:26,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037897674] [2020-10-16 12:03:26,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:03:26,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:03:26,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:03:26,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037897674] [2020-10-16 12:03:26,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:03:26,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 12:03:26,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18661816] [2020-10-16 12:03:26,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 12:03:26,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:03:26,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 12:03:26,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-16 12:03:26,449 INFO L87 Difference]: Start difference. First operand 184 states and 454 transitions. Second operand 6 states. [2020-10-16 12:03:26,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:03:26,623 INFO L93 Difference]: Finished difference Result 270 states and 658 transitions. [2020-10-16 12:03:26,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 12:03:26,624 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-10-16 12:03:26,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:03:26,625 INFO L225 Difference]: With dead ends: 270 [2020-10-16 12:03:26,625 INFO L226 Difference]: Without dead ends: 168 [2020-10-16 12:03:26,626 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-16 12:03:26,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-10-16 12:03:26,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 144. [2020-10-16 12:03:26,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-16 12:03:26,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 326 transitions. [2020-10-16 12:03:26,632 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 326 transitions. Word has length 26 [2020-10-16 12:03:26,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:03:26,633 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 326 transitions. [2020-10-16 12:03:26,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 12:03:26,633 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 326 transitions. [2020-10-16 12:03:26,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-16 12:03:26,634 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:03:26,634 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:03:26,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-16 12:03:26,635 INFO L429 AbstractCegarLoop]: === Iteration 13 === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:03:26,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:03:26,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1649584844, now seen corresponding path program 2 times [2020-10-16 12:03:26,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:03:26,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22224322] [2020-10-16 12:03:26,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:03:26,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 12:03:26,679 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 12:03:26,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 12:03:26,717 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 12:03:26,793 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 12:03:26,794 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 12:03:26,794 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-16 12:03:26,796 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-16 12:03:26,820 WARN L124 codingBacktranslator]: Skipped backtranslation of ATE [979] [979] L846-->L853: Formula: (let ((.cse7 (= (mod ~z$r_buff1_thd0~0_In1419086325 256) 0)) (.cse6 (= (mod ~z$w_buff1_used~0_In1419086325 256) 0)) (.cse8 (= (mod ~z$r_buff0_thd0~0_In1419086325 256) 0)) (.cse9 (= 0 (mod ~z$w_buff0_used~0_In1419086325 256)))) (let ((.cse4 (not .cse9)) (.cse5 (not .cse8)) (.cse3 (or .cse8 .cse9)) (.cse1 (not .cse6)) (.cse2 (not .cse7)) (.cse0 (or .cse6 .cse7))) (and (or (and .cse0 (= ~z$w_buff1_used~0_Out1419086325 ~z$w_buff1_used~0_In1419086325)) (and (= ~z$w_buff1_used~0_Out1419086325 0) .cse1 .cse2)) (or (and (= ~z$w_buff0_used~0_In1419086325 ~z$w_buff0_used~0_Out1419086325) .cse3) (and (= ~z$w_buff0_used~0_Out1419086325 0) .cse4 .cse5)) (= ~z$r_buff0_thd0~0_In1419086325 ~z$r_buff0_thd0~0_Out1419086325) (= ~z$r_buff1_thd0~0_Out1419086325 ~z$r_buff1_thd0~0_In1419086325) (= ULTIMATE.start_assume_abort_if_not_~cond_Out1419086325 |ULTIMATE.start_assume_abort_if_not_#in~cond_In1419086325|) (or (and (= ~z~0_Out1419086325 ~z$w_buff0~0_In1419086325) .cse4 .cse5) (and .cse3 (or (and (= ~z$w_buff1~0_In1419086325 ~z~0_Out1419086325) .cse1 .cse2) (and .cse0 (= ~z~0_In1419086325 ~z~0_Out1419086325))))) (not (= ULTIMATE.start_assume_abort_if_not_~cond_Out1419086325 0))))) InVars {ULTIMATE.start_assume_abort_if_not_#in~cond=|ULTIMATE.start_assume_abort_if_not_#in~cond_In1419086325|, ~z$r_buff0_thd0~0=~z$r_buff0_thd0~0_In1419086325, ~z$w_buff0_used~0=~z$w_buff0_used~0_In1419086325, ~z$w_buff0~0=~z$w_buff0~0_In1419086325, ~z$r_buff1_thd0~0=~z$r_buff1_thd0~0_In1419086325, ~z$w_buff1_used~0=~z$w_buff1_used~0_In1419086325, ~z$w_buff1~0=~z$w_buff1~0_In1419086325, ~z~0=~z~0_In1419086325} OutVars{~z$w_buff0_used~0=~z$w_buff0_used~0_Out1419086325, ULTIMATE.start_main_#t~ite18=|ULTIMATE.start_main_#t~ite18_Out1419086325|, ~z$w_buff0~0=~z$w_buff0~0_In1419086325, ULTIMATE.start_main_#t~ite19=|ULTIMATE.start_main_#t~ite19_Out1419086325|, ~z$w_buff1_used~0=~z$w_buff1_used~0_Out1419086325, ~z$w_buff1~0=~z$w_buff1~0_In1419086325, ULTIMATE.start_main_#t~ite20=|ULTIMATE.start_main_#t~ite20_Out1419086325|, ULTIMATE.start_main_#t~ite21=|ULTIMATE.start_main_#t~ite21_Out1419086325|, ULTIMATE.start_main_#t~ite22=|ULTIMATE.start_main_#t~ite22_Out1419086325|, ULTIMATE.start_main_#t~ite23=|ULTIMATE.start_main_#t~ite23_Out1419086325|, ULTIMATE.start_assume_abort_if_not_#in~cond=|ULTIMATE.start_assume_abort_if_not_#in~cond_In1419086325|, ~z$r_buff0_thd0~0=~z$r_buff0_thd0~0_Out1419086325, ULTIMATE.start_assume_abort_if_not_~cond=ULTIMATE.start_assume_abort_if_not_~cond_Out1419086325, ~z$r_buff1_thd0~0=~z$r_buff1_thd0~0_Out1419086325, ~z~0=~z~0_Out1419086325} AuxVars[] AssignedVars[~z$r_buff0_thd0~0, ULTIMATE.start_assume_abort_if_not_~cond, ~z$w_buff0_used~0, ULTIMATE.start_main_#t~ite18, ULTIMATE.start_main_#t~ite19, ~z$r_buff1_thd0~0, ~z$w_buff1_used~0, ~z~0, ULTIMATE.start_main_#t~ite20, ULTIMATE.start_main_#t~ite21, ULTIMATE.start_main_#t~ite22, ULTIMATE.start_main_#t~ite23] because there is no mapped edge [2020-10-16 12:03:26,833 WARN L219 RCFGBacktranslator]: You are using large block encoding together with an algorithm for which the backtranslation into program statements is not yet implemented. [2020-10-16 12:03:26,834 ERROR L222 RCFGBacktranslator]: unable to determine which branch was taken, unable to determine the location [2020-10-16 12:03:26,836 WARN L219 RCFGBacktranslator]: You are using large block encoding together with an algorithm for which the backtranslation into program statements is not yet implemented. [2020-10-16 12:03:26,837 ERROR L222 RCFGBacktranslator]: unable to determine which branch was taken, unable to determine the location [2020-10-16 12:03:26,837 WARN L219 RCFGBacktranslator]: You are using large block encoding together with an algorithm for which the backtranslation into program statements is not yet implemented. [2020-10-16 12:03:26,837 ERROR L222 RCFGBacktranslator]: unable to determine which branch was taken, unable to determine the location [2020-10-16 12:03:26,837 WARN L219 RCFGBacktranslator]: You are using large block encoding together with an algorithm for which the backtranslation into program statements is not yet implemented. [2020-10-16 12:03:26,837 ERROR L222 RCFGBacktranslator]: unable to determine which branch was taken, unable to determine the location [2020-10-16 12:03:26,837 WARN L219 RCFGBacktranslator]: You are using large block encoding together with an algorithm for which the backtranslation into program statements is not yet implemented. [2020-10-16 12:03:26,838 ERROR L222 RCFGBacktranslator]: unable to determine which branch was taken, unable to determine the location [2020-10-16 12:03:26,838 WARN L219 RCFGBacktranslator]: You are using large block encoding together with an algorithm for which the backtranslation into program statements is not yet implemented. [2020-10-16 12:03:26,838 ERROR L222 RCFGBacktranslator]: unable to determine which branch was taken, unable to determine the location [2020-10-16 12:03:26,838 WARN L219 RCFGBacktranslator]: You are using large block encoding together with an algorithm for which the backtranslation into program statements is not yet implemented. [2020-10-16 12:03:26,838 ERROR L222 RCFGBacktranslator]: unable to determine which branch was taken, unable to determine the location [2020-10-16 12:03:26,839 WARN L219 RCFGBacktranslator]: You are using large block encoding together with an algorithm for which the backtranslation into program statements is not yet implemented. [2020-10-16 12:03:26,839 ERROR L222 RCFGBacktranslator]: unable to determine which branch was taken, unable to determine the location [2020-10-16 12:03:26,840 WARN L219 RCFGBacktranslator]: You are using large block encoding together with an algorithm for which the backtranslation into program statements is not yet implemented. [2020-10-16 12:03:26,840 ERROR L222 RCFGBacktranslator]: unable to determine which branch was taken, unable to determine the location [2020-10-16 12:03:26,840 WARN L219 RCFGBacktranslator]: You are using large block encoding together with an algorithm for which the backtranslation into program statements is not yet implemented. [2020-10-16 12:03:26,840 ERROR L222 RCFGBacktranslator]: unable to determine which branch was taken, unable to determine the location [2020-10-16 12:03:26,840 WARN L219 RCFGBacktranslator]: You are using large block encoding together with an algorithm for which the backtranslation into program statements is not yet implemented. [2020-10-16 12:03:26,840 ERROR L222 RCFGBacktranslator]: unable to determine which branch was taken, unable to determine the location [2020-10-16 12:03:26,840 WARN L219 RCFGBacktranslator]: You are using large block encoding together with an algorithm for which the backtranslation into program statements is not yet implemented. [2020-10-16 12:03:26,841 ERROR L222 RCFGBacktranslator]: unable to determine which branch was taken, unable to determine the location [2020-10-16 12:03:26,841 WARN L219 RCFGBacktranslator]: You are using large block encoding together with an algorithm for which the backtranslation into program statements is not yet implemented. [2020-10-16 12:03:26,841 ERROR L222 RCFGBacktranslator]: unable to determine which branch was taken, unable to determine the location [2020-10-16 12:03:26,842 WARN L219 RCFGBacktranslator]: You are using large block encoding together with an algorithm for which the backtranslation into program statements is not yet implemented. [2020-10-16 12:03:26,842 ERROR L222 RCFGBacktranslator]: unable to determine which branch was taken, unable to determine the location [2020-10-16 12:03:26,842 WARN L219 RCFGBacktranslator]: You are using large block encoding together with an algorithm for which the backtranslation into program statements is not yet implemented. [2020-10-16 12:03:26,843 ERROR L222 RCFGBacktranslator]: unable to determine which branch was taken, unable to determine the location [2020-10-16 12:03:26,843 WARN L219 RCFGBacktranslator]: You are using large block encoding together with an algorithm for which the backtranslation into program statements is not yet implemented. [2020-10-16 12:03:26,843 ERROR L222 RCFGBacktranslator]: unable to determine which branch was taken, unable to determine the location [2020-10-16 12:03:26,847 WARN L219 RCFGBacktranslator]: You are using large block encoding together with an algorithm for which the backtranslation into program statements is not yet implemented. [2020-10-16 12:03:26,847 ERROR L222 RCFGBacktranslator]: unable to determine which branch was taken, unable to determine the location [2020-10-16 12:03:26,848 WARN L219 RCFGBacktranslator]: You are using large block encoding together with an algorithm for which the backtranslation into program statements is not yet implemented. [2020-10-16 12:03:26,848 ERROR L222 RCFGBacktranslator]: unable to determine which branch was taken, unable to determine the location [2020-10-16 12:03:26,848 WARN L219 RCFGBacktranslator]: You are using large block encoding together with an algorithm for which the backtranslation into program statements is not yet implemented. [2020-10-16 12:03:26,848 ERROR L222 RCFGBacktranslator]: unable to determine which branch was taken, unable to determine the location [2020-10-16 12:03:26,848 WARN L219 RCFGBacktranslator]: You are using large block encoding together with an algorithm for which the backtranslation into program statements is not yet implemented. [2020-10-16 12:03:26,848 ERROR L222 RCFGBacktranslator]: unable to determine which branch was taken, unable to determine the location [2020-10-16 12:03:26,849 WARN L219 RCFGBacktranslator]: You are using large block encoding together with an algorithm for which the backtranslation into program statements is not yet implemented. [2020-10-16 12:03:26,849 ERROR L222 RCFGBacktranslator]: unable to determine which branch was taken, unable to determine the location [2020-10-16 12:03:26,849 WARN L219 RCFGBacktranslator]: You are using large block encoding together with an algorithm for which the backtranslation into program statements is not yet implemented. [2020-10-16 12:03:26,849 ERROR L222 RCFGBacktranslator]: unable to determine which branch was taken, unable to determine the location [2020-10-16 12:03:26,850 WARN L219 RCFGBacktranslator]: You are using large block encoding together with an algorithm for which the backtranslation into program statements is not yet implemented. [2020-10-16 12:03:26,850 ERROR L222 RCFGBacktranslator]: unable to determine which branch was taken, unable to determine the location [2020-10-16 12:03:26,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 12:03:26 BasicIcfg [2020-10-16 12:03:26,965 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 12:03:26,968 INFO L168 Benchmark]: Toolchain (without parser) took 15947.76 ms. Allocated memory was 138.4 MB in the beginning and 431.5 MB in the end (delta: 293.1 MB). Free memory was 100.0 MB in the beginning and 293.6 MB in the end (delta: -193.6 MB). Peak memory consumption was 99.4 MB. Max. memory is 7.1 GB. [2020-10-16 12:03:26,969 INFO L168 Benchmark]: CDTParser took 0.25 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: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-16 12:03:26,971 INFO L168 Benchmark]: CACSL2BoogieTranslator took 820.60 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 99.5 MB in the beginning and 155.5 MB in the end (delta: -56.0 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. [2020-10-16 12:03:26,973 INFO L168 Benchmark]: Boogie Procedure Inliner took 64.81 ms. Allocated memory is still 201.3 MB. Free memory was 155.5 MB in the beginning and 152.7 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-10-16 12:03:26,977 INFO L168 Benchmark]: Boogie Preprocessor took 41.43 ms. Allocated memory is still 201.3 MB. Free memory was 152.7 MB in the beginning and 149.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-10-16 12:03:26,978 INFO L168 Benchmark]: RCFGBuilder took 2060.04 ms. Allocated memory was 201.3 MB in the beginning and 252.7 MB in the end (delta: 51.4 MB). Free memory was 149.9 MB in the beginning and 200.5 MB in the end (delta: -50.6 MB). Peak memory consumption was 104.8 MB. Max. memory is 7.1 GB. [2020-10-16 12:03:26,982 INFO L168 Benchmark]: TraceAbstraction took 12954.56 ms. Allocated memory was 252.7 MB in the beginning and 431.5 MB in the end (delta: 178.8 MB). Free memory was 198.6 MB in the beginning and 293.6 MB in the end (delta: -95.0 MB). Peak memory consumption was 83.8 MB. Max. memory is 7.1 GB. [2020-10-16 12:03:26,992 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 820.60 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 99.5 MB in the beginning and 155.5 MB in the end (delta: -56.0 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 64.81 ms. Allocated memory is still 201.3 MB. Free memory was 155.5 MB in the beginning and 152.7 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 41.43 ms. Allocated memory is still 201.3 MB. Free memory was 152.7 MB in the beginning and 149.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 2060.04 ms. Allocated memory was 201.3 MB in the beginning and 252.7 MB in the end (delta: 51.4 MB). Free memory was 149.9 MB in the beginning and 200.5 MB in the end (delta: -50.6 MB). Peak memory consumption was 104.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 12954.56 ms. Allocated memory was 252.7 MB in the beginning and 431.5 MB in the end (delta: 178.8 MB). Free memory was 198.6 MB in the beginning and 293.6 MB in the end (delta: -95.0 MB). Peak memory consumption was 83.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1360 VarBasedMoverChecksPositive, 46 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 133 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 8.5s, 123 PlacesBefore, 45 PlacesAfterwards, 112 TransitionsBefore, 32 TransitionsAfterwards, 2540 CoEnabledTransitionPairs, 7 FixpointIterations, 37 TrivialSequentialCompositions, 46 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 2 ChoiceCompositions, 92 TotalNumberOfCompositions, 6806 MoverChecksTotal - CounterExampleResult [Line: 7]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L699] 0 int __unbuffered_cnt = 0; [L701] 0 int __unbuffered_p1_EAX = 0; [L703] 0 int __unbuffered_p3_EAX = 0; [L705] 0 int __unbuffered_p3_EBX = 0; [L707] 0 int a = 0; [L709] 0 int b = 0; [L710] 0 _Bool main$tmp_guard0; [L711] 0 _Bool main$tmp_guard1; [L713] 0 int x = 0; [L715] 0 int y = 0; [L717] 0 int z = 0; [L718] 0 _Bool z$flush_delayed; [L719] 0 int z$mem_tmp; [L720] 0 _Bool z$r_buff0_thd0; [L721] 0 _Bool z$r_buff0_thd1; [L722] 0 _Bool z$r_buff0_thd2; [L723] 0 _Bool z$r_buff0_thd3; [L724] 0 _Bool z$r_buff0_thd4; [L725] 0 _Bool z$r_buff1_thd0; [L726] 0 _Bool z$r_buff1_thd1; [L727] 0 _Bool z$r_buff1_thd2; [L728] 0 _Bool z$r_buff1_thd3; [L729] 0 _Bool z$r_buff1_thd4; [L730] 0 _Bool z$read_delayed; [L731] 0 int *z$read_delayed_var; [L732] 0 int z$w_buff0; [L733] 0 _Bool z$w_buff0_used; [L734] 0 int z$w_buff1; [L735] 0 _Bool z$w_buff1_used; [L736] 0 _Bool weak$$choice0; [L737] 0 _Bool weak$$choice2; [L835] 0 pthread_t t1173; [L836] FCALL, FORK 0 pthread_create(&t1173, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0] [L837] 0 pthread_t t1174; [L838] FCALL, FORK 0 pthread_create(&t1174, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0] [L839] 0 pthread_t t1175; [L840] FCALL, FORK 0 pthread_create(&t1175, ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0] [L841] 0 pthread_t t1176; [L842] FCALL, FORK 0 pthread_create(&t1176, ((void *)0), P3, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0] [L791] 4 z$w_buff1 = z$w_buff0 [L792] 4 z$w_buff0 = 2 [L793] 4 z$w_buff1_used = z$w_buff0_used [L794] 4 z$w_buff0_used = (_Bool)1 [L7] COND FALSE 4 !(!expression) [L796] 4 z$r_buff1_thd0 = z$r_buff0_thd0 [L797] 4 z$r_buff1_thd1 = z$r_buff0_thd1 [L798] 4 z$r_buff1_thd2 = z$r_buff0_thd2 [L799] 4 z$r_buff1_thd3 = z$r_buff0_thd3 [L800] 4 z$r_buff1_thd4 = z$r_buff0_thd4 [L801] 4 z$r_buff0_thd4 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L804] 4 a = 1 [L807] 4 __unbuffered_p3_EAX = a VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L810] 4 __unbuffered_p3_EBX = b VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L741] 1 b = 1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L744] 1 x = 1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L756] 2 x = 2 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L749] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L751] 1 return 0; [L759] 2 __unbuffered_p1_EAX = y VAL [\result={0:0}, __unbuffered_cnt=1, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L764] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L766] 2 return 0; [L771] 3 y = 1 VAL [\result={0:0}, \result={0:0}, __unbuffered_cnt=2, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=1, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L774] 3 z = 1 VAL [\result={0:0}, \result={0:0}, __unbuffered_cnt=2, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=1, z=1, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L777] EXPR 3 z$w_buff0_used && z$r_buff0_thd3 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd3 ? z$w_buff1 : z) [L777] EXPR 3 z$w_buff1_used && z$r_buff1_thd3 ? z$w_buff1 : z [L777] EXPR 3 z$w_buff0_used && z$r_buff0_thd3 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd3 ? z$w_buff1 : z) [L777] 3 z = z$w_buff0_used && z$r_buff0_thd3 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd3 ? z$w_buff1 : z) [L778] EXPR 3 z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : z$w_buff0_used [L778] 3 z$w_buff0_used = z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : z$w_buff0_used [L779] EXPR 3 z$w_buff0_used && z$r_buff0_thd3 || z$w_buff1_used && z$r_buff1_thd3 ? (_Bool)0 : z$w_buff1_used [L779] 3 z$w_buff1_used = z$w_buff0_used && z$r_buff0_thd3 || z$w_buff1_used && z$r_buff1_thd3 ? (_Bool)0 : z$w_buff1_used [L780] EXPR 3 z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : z$r_buff0_thd3 [L780] 3 z$r_buff0_thd3 = z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : z$r_buff0_thd3 [L781] EXPR 3 z$w_buff0_used && z$r_buff0_thd3 || z$w_buff1_used && z$r_buff1_thd3 ? (_Bool)0 : z$r_buff1_thd3 [L781] 3 z$r_buff1_thd3 = z$w_buff0_used && z$r_buff0_thd3 || z$w_buff1_used && z$r_buff1_thd3 ? (_Bool)0 : z$r_buff1_thd3 [L784] 3 __unbuffered_cnt = __unbuffered_cnt + 1 [L786] 3 return 0; [L813] EXPR 4 z$w_buff0_used && z$r_buff0_thd4 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd4 ? z$w_buff1 : z) [L813] EXPR 4 z$w_buff1_used && z$r_buff1_thd4 ? z$w_buff1 : z [L813] EXPR 4 z$w_buff0_used && z$r_buff0_thd4 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd4 ? z$w_buff1 : z) [L813] 4 z = z$w_buff0_used && z$r_buff0_thd4 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd4 ? z$w_buff1 : z) [L814] EXPR 4 z$w_buff0_used && z$r_buff0_thd4 ? (_Bool)0 : z$w_buff0_used [L814] 4 z$w_buff0_used = z$w_buff0_used && z$r_buff0_thd4 ? (_Bool)0 : z$w_buff0_used [L815] EXPR 4 z$w_buff0_used && z$r_buff0_thd4 || z$w_buff1_used && z$r_buff1_thd4 ? (_Bool)0 : z$w_buff1_used [L815] 4 z$w_buff1_used = z$w_buff0_used && z$r_buff0_thd4 || z$w_buff1_used && z$r_buff1_thd4 ? (_Bool)0 : z$w_buff1_used [L816] EXPR 4 z$w_buff0_used && z$r_buff0_thd4 ? (_Bool)0 : z$r_buff0_thd4 [L816] 4 z$r_buff0_thd4 = z$w_buff0_used && z$r_buff0_thd4 ? (_Bool)0 : z$r_buff0_thd4 [L817] EXPR 4 z$w_buff0_used && z$r_buff0_thd4 || z$w_buff1_used && z$r_buff1_thd4 ? (_Bool)0 : z$r_buff1_thd4 [L817] 4 z$r_buff1_thd4 = z$w_buff0_used && z$r_buff0_thd4 || z$w_buff1_used && z$r_buff1_thd4 ? (_Bool)0 : z$r_buff1_thd4 [L820] 4 __unbuffered_cnt = __unbuffered_cnt + 1 [L822] 4 return 0; [L844] 0 main$tmp_guard0 = __unbuffered_cnt == 4 [L855] 0 weak$$choice0 = __VERIFIER_nondet_bool() [L856] 0 weak$$choice2 = __VERIFIER_nondet_bool() [L857] 0 z$flush_delayed = weak$$choice2 [L858] 0 z$mem_tmp = z [L859] EXPR 0 !z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : z$w_buff1) [L859] 0 z = !z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : z$w_buff1) [L860] EXPR 0 weak$$choice2 ? z$w_buff0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff0 : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : z$w_buff0)) [L860] 0 z$w_buff0 = weak$$choice2 ? z$w_buff0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff0 : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : z$w_buff0)) [L861] EXPR 0 weak$$choice2 ? z$w_buff1 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff1 : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff1 : z$w_buff1)) [L861] EXPR 0 !z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff1 : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff1 : z$w_buff1) [L861] EXPR 0 weak$$choice2 ? z$w_buff1 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff1 : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff1 : z$w_buff1)) [L861] 0 z$w_buff1 = weak$$choice2 ? z$w_buff1 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff1 : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff1 : z$w_buff1)) [L862] EXPR 0 weak$$choice2 ? z$w_buff0_used : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff0_used : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$w_buff0_used)) [L862] 0 z$w_buff0_used = weak$$choice2 ? z$w_buff0_used : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff0_used : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$w_buff0_used)) [L863] EXPR 0 weak$$choice2 ? z$w_buff1_used : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff1_used : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L863] 0 z$w_buff1_used = weak$$choice2 ? z$w_buff1_used : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff1_used : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L864] EXPR 0 weak$$choice2 ? z$r_buff0_thd0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$r_buff0_thd0 : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$r_buff0_thd0)) [L864] EXPR 0 !z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$r_buff0_thd0 : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$r_buff0_thd0) [L864] EXPR 0 weak$$choice2 ? z$r_buff0_thd0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$r_buff0_thd0 : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$r_buff0_thd0)) [L864] 0 z$r_buff0_thd0 = weak$$choice2 ? z$r_buff0_thd0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$r_buff0_thd0 : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$r_buff0_thd0)) [L865] EXPR 0 weak$$choice2 ? z$r_buff1_thd0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$r_buff1_thd0 : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L865] 0 z$r_buff1_thd0 = weak$$choice2 ? z$r_buff1_thd0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$r_buff1_thd0 : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L866] 0 main$tmp_guard1 = !(x == 2 && z == 2 && __unbuffered_p1_EAX == 0 && __unbuffered_p3_EAX == 1 && __unbuffered_p3_EBX == 0) [L867] EXPR 0 z$flush_delayed ? z$mem_tmp : z [L867] 0 z = z$flush_delayed ? z$mem_tmp : z [L868] 0 z$flush_delayed = (_Bool)0 [L7] COND TRUE 0 !expression [L7] 0 __VERIFIER_error() VAL [\result={0:0}, \result={0:0}, \result={0:0}, __unbuffered_cnt=4, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=9, weak$$choice2=0, x=2, y=1, z=2, z$flush_delayed=0, z$mem_tmp=2, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 111 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 12.6s, OverallIterations: 13, TraceHistogramMax: 1, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 8.7s, HoareTripleCheckerStatistics: 359 SDtfs, 484 SDslu, 613 SDs, 0 SdLazy, 280 SolverSat, 72 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 51 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3002occurred 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: 0.6s AutomataMinimizationTime, 12 MinimizatonAttempts, 29 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 229 NumberOfCodeBlocks, 229 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 191 ConstructedInterpolants, 0 QuantifiedInterpolants, 27062 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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 incorrect! Received shutdown request...