/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-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe034_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-1d1d2b5 [2020-10-22 00:42:45,777 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-22 00:42:45,781 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-22 00:42:45,824 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-22 00:42:45,825 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-22 00:42:45,833 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-22 00:42:45,837 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-22 00:42:45,841 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-22 00:42:45,844 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-22 00:42:45,847 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-22 00:42:45,848 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-22 00:42:45,849 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-22 00:42:45,849 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-22 00:42:45,852 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-22 00:42:45,855 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-22 00:42:45,857 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-22 00:42:45,859 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-22 00:42:45,861 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-22 00:42:45,862 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-22 00:42:45,870 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-22 00:42:45,873 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-22 00:42:45,875 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-22 00:42:45,876 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-22 00:42:45,877 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-22 00:42:45,890 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-22 00:42:45,895 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-22 00:42:45,896 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-22 00:42:45,897 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-22 00:42:45,898 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-22 00:42:45,899 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-22 00:42:45,899 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-22 00:42:45,900 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-22 00:42:45,900 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-22 00:42:45,900 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-22 00:42:45,902 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-22 00:42:45,903 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-22 00:42:45,904 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-10-22 00:42:45,946 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-22 00:42:45,946 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-22 00:42:45,948 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-22 00:42:45,948 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-22 00:42:45,948 INFO L138 SettingsManager]: * Use SBE=true [2020-10-22 00:42:45,949 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-22 00:42:45,949 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-22 00:42:45,950 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-22 00:42:45,950 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-22 00:42:45,950 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-22 00:42:45,951 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-22 00:42:45,951 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-22 00:42:45,952 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-22 00:42:45,952 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-22 00:42:45,952 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-22 00:42:45,952 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-22 00:42:45,952 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-22 00:42:45,953 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-22 00:42:45,953 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-22 00:42:45,953 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-22 00:42:45,953 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-22 00:42:45,953 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-22 00:42:45,954 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-22 00:42:45,954 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-22 00:42:45,954 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-22 00:42:45,954 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-22 00:42:45,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-22 00:42:45,955 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-22 00:42:45,955 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-22 00:42:45,955 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-22 00:42:45,955 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-22 00:42:46,288 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-22 00:42:46,301 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-22 00:42:46,304 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-22 00:42:46,306 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-22 00:42:46,306 INFO L275 PluginConnector]: CDTParser initialized [2020-10-22 00:42:46,307 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe034_tso.oepc.i [2020-10-22 00:42:46,368 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54d2a4cfc/e3f4ced1dcb447d0bbbbbeb7fe790ba6/FLAG5a5ac8091 [2020-10-22 00:42:46,884 INFO L306 CDTParser]: Found 1 translation units. [2020-10-22 00:42:46,885 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe034_tso.oepc.i [2020-10-22 00:42:46,903 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54d2a4cfc/e3f4ced1dcb447d0bbbbbeb7fe790ba6/FLAG5a5ac8091 [2020-10-22 00:42:47,146 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54d2a4cfc/e3f4ced1dcb447d0bbbbbeb7fe790ba6 [2020-10-22 00:42:47,154 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-22 00:42:47,161 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-22 00:42:47,162 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-22 00:42:47,162 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-22 00:42:47,166 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-22 00:42:47,167 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 12:42:47" (1/1) ... [2020-10-22 00:42:47,170 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55e95573 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:42:47, skipping insertion in model container [2020-10-22 00:42:47,170 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 12:42:47" (1/1) ... [2020-10-22 00:42:47,178 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-22 00:42:47,240 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-22 00:42:47,752 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-22 00:42:47,764 INFO L203 MainTranslator]: Completed pre-run [2020-10-22 00:42:47,848 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-22 00:42:47,946 INFO L208 MainTranslator]: Completed translation [2020-10-22 00:42:47,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:42:47 WrapperNode [2020-10-22 00:42:47,947 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-22 00:42:47,949 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-22 00:42:47,949 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-22 00:42:47,949 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-22 00:42:47,960 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:42:47" (1/1) ... [2020-10-22 00:42:47,978 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:42:47" (1/1) ... [2020-10-22 00:42:48,007 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-22 00:42:48,007 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-22 00:42:48,008 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-22 00:42:48,008 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-22 00:42:48,016 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:42:47" (1/1) ... [2020-10-22 00:42:48,017 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:42:47" (1/1) ... [2020-10-22 00:42:48,020 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:42:47" (1/1) ... [2020-10-22 00:42:48,020 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:42:47" (1/1) ... [2020-10-22 00:42:48,027 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:42:47" (1/1) ... [2020-10-22 00:42:48,029 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:42:47" (1/1) ... [2020-10-22 00:42:48,031 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:42:47" (1/1) ... [2020-10-22 00:42:48,035 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-22 00:42:48,035 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-22 00:42:48,035 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-22 00:42:48,036 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-22 00:42:48,037 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:42:47" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-22 00:42:48,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-22 00:42:48,112 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-22 00:42:48,112 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-22 00:42:48,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-22 00:42:48,113 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-22 00:42:48,113 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-22 00:42:48,113 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-22 00:42:48,113 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-22 00:42:48,114 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-22 00:42:48,114 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-22 00:42:48,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-22 00:42:48,114 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-22 00:42:48,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-22 00:42:48,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-22 00:42:48,116 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-22 00:42:48,525 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-22 00:42:48,526 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-22 00:42:48,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 12:42:48 BoogieIcfgContainer [2020-10-22 00:42:48,529 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-22 00:42:48,530 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-22 00:42:48,530 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-22 00:42:48,534 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-22 00:42:48,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 12:42:47" (1/3) ... [2020-10-22 00:42:48,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cf1c26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 12:42:48, skipping insertion in model container [2020-10-22 00:42:48,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:42:47" (2/3) ... [2020-10-22 00:42:48,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cf1c26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 12:42:48, skipping insertion in model container [2020-10-22 00:42:48,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 12:42:48" (3/3) ... [2020-10-22 00:42:48,538 INFO L111 eAbstractionObserver]: Analyzing ICFG safe034_tso.oepc.i [2020-10-22 00:42:48,551 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-22 00:42:48,551 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-22 00:42:48,560 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-22 00:42:48,561 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-22 00:42:48,590 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:48,591 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:48,591 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:48,591 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:48,592 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:48,592 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:48,592 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:48,593 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:48,593 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:48,593 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:48,593 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:48,594 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:48,594 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:48,594 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:48,595 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:48,595 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:48,595 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:48,595 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:48,600 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:48,600 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:48,600 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:48,600 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:48,607 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:48,607 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:48,608 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:48,608 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:48,611 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:48,611 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:48,611 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:48,611 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:48,613 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-22 00:42:48,628 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-22 00:42:48,649 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-22 00:42:48,649 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-22 00:42:48,650 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-22 00:42:48,650 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-22 00:42:48,650 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-22 00:42:48,650 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-22 00:42:48,650 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-22 00:42:48,651 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-22 00:42:48,663 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-22 00:42:48,664 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 79 transitions, 173 flow [2020-10-22 00:42:48,666 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 79 transitions, 173 flow [2020-10-22 00:42:48,668 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 86 places, 79 transitions, 173 flow [2020-10-22 00:42:48,721 INFO L129 PetriNetUnfolder]: 3/76 cut-off events. [2020-10-22 00:42:48,722 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-22 00:42:48,727 INFO L80 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 76 events. 3/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 61 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-10-22 00:42:48,730 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-10-22 00:42:50,242 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-10-22 00:42:50,367 INFO L131 LiptonReduction]: Checked pairs total: 2658 [2020-10-22 00:42:50,368 INFO L133 LiptonReduction]: Total number of compositions: 68 [2020-10-22 00:42:50,375 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-10-22 00:42:50,407 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-10-22 00:42:50,409 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-10-22 00:42:50,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-22 00:42:50,420 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:42:50,421 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:42:50,421 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:42:50,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:42:50,428 INFO L82 PathProgramCache]: Analyzing trace with hash -1479466227, now seen corresponding path program 1 times [2020-10-22 00:42:50,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:42:50,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744720539] [2020-10-22 00:42:50,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:42:50,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:42:50,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 00:42:50,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744720539] [2020-10-22 00:42:50,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 00:42:50,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 00:42:50,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1402713581] [2020-10-22 00:42:50,708 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:42:50,713 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:42:50,730 INFO L252 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-10-22 00:42:50,730 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:42:50,735 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:42:50,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-22 00:42:50,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:42:50,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-22 00:42:50,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-22 00:42:50,755 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-10-22 00:42:50,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:42:50,794 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-10-22 00:42:50,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-22 00:42:50,796 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-10-22 00:42:50,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:42:50,820 INFO L225 Difference]: With dead ends: 362 [2020-10-22 00:42:50,820 INFO L226 Difference]: Without dead ends: 298 [2020-10-22 00:42:50,821 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-22 00:42:50,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-10-22 00:42:50,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-10-22 00:42:50,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-10-22 00:42:50,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-10-22 00:42:50,897 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-10-22 00:42:50,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:42:50,899 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-10-22 00:42:50,899 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-22 00:42:50,899 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-10-22 00:42:50,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-22 00:42:50,900 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:42:50,901 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:42:50,901 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-22 00:42:50,901 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:42:50,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:42:50,902 INFO L82 PathProgramCache]: Analyzing trace with hash 1381176445, now seen corresponding path program 1 times [2020-10-22 00:42:50,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:42:50,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170809225] [2020-10-22 00:42:50,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:42:50,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:42:51,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 00:42:51,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170809225] [2020-10-22 00:42:51,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 00:42:51,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 00:42:51,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [401297203] [2020-10-22 00:42:51,041 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:42:51,042 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:42:51,043 INFO L252 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-10-22 00:42:51,043 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:42:51,043 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:42:51,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 00:42:51,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:42:51,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 00:42:51,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-22 00:42:51,046 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-10-22 00:42:51,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:42:51,080 INFO L93 Difference]: Finished difference Result 346 states and 956 transitions. [2020-10-22 00:42:51,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-22 00:42:51,081 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-22 00:42:51,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:42:51,084 INFO L225 Difference]: With dead ends: 346 [2020-10-22 00:42:51,085 INFO L226 Difference]: Without dead ends: 282 [2020-10-22 00:42:51,086 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-22 00:42:51,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-10-22 00:42:51,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2020-10-22 00:42:51,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2020-10-22 00:42:51,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 804 transitions. [2020-10-22 00:42:51,113 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 804 transitions. Word has length 9 [2020-10-22 00:42:51,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:42:51,113 INFO L481 AbstractCegarLoop]: Abstraction has 282 states and 804 transitions. [2020-10-22 00:42:51,113 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 00:42:51,113 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 804 transitions. [2020-10-22 00:42:51,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-22 00:42:51,115 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:42:51,115 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:42:51,116 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-22 00:42:51,116 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:42:51,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:42:51,116 INFO L82 PathProgramCache]: Analyzing trace with hash 1310825236, now seen corresponding path program 1 times [2020-10-22 00:42:51,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:42:51,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261283874] [2020-10-22 00:42:51,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:42:51,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:42:51,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 00:42:51,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261283874] [2020-10-22 00:42:51,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 00:42:51,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 00:42:51,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [261154617] [2020-10-22 00:42:51,216 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:42:51,217 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:42:51,219 INFO L252 McrAutomatonBuilder]: Finished intersection with 16 states and 20 transitions. [2020-10-22 00:42:51,219 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:42:51,318 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:42:51,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 00:42:51,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:42:51,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 00:42:51,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-22 00:42:51,320 INFO L87 Difference]: Start difference. First operand 282 states and 804 transitions. Second operand 4 states. [2020-10-22 00:42:51,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:42:51,361 INFO L93 Difference]: Finished difference Result 277 states and 699 transitions. [2020-10-22 00:42:51,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-22 00:42:51,362 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-22 00:42:51,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:42:51,364 INFO L225 Difference]: With dead ends: 277 [2020-10-22 00:42:51,365 INFO L226 Difference]: Without dead ends: 213 [2020-10-22 00:42:51,365 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-22 00:42:51,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-22 00:42:51,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2020-10-22 00:42:51,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-10-22 00:42:51,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 528 transitions. [2020-10-22 00:42:51,382 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 528 transitions. Word has length 10 [2020-10-22 00:42:51,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:42:51,382 INFO L481 AbstractCegarLoop]: Abstraction has 213 states and 528 transitions. [2020-10-22 00:42:51,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 00:42:51,383 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 528 transitions. [2020-10-22 00:42:51,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-22 00:42:51,384 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:42:51,384 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:42:51,385 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-22 00:42:51,385 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:42:51,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:42:51,385 INFO L82 PathProgramCache]: Analyzing trace with hash -346485744, now seen corresponding path program 1 times [2020-10-22 00:42:51,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:42:51,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766845216] [2020-10-22 00:42:51,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:42:51,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:42:51,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 00:42:51,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766845216] [2020-10-22 00:42:51,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 00:42:51,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-22 00:42:51,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [577734041] [2020-10-22 00:42:51,463 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:42:51,465 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:42:51,467 INFO L252 McrAutomatonBuilder]: Finished intersection with 25 states and 36 transitions. [2020-10-22 00:42:51,467 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:42:51,615 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3403#(<= ~__unbuffered_cnt~0 0)] [2020-10-22 00:42:51,615 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-22 00:42:51,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:42:51,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-22 00:42:51,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-22 00:42:51,616 INFO L87 Difference]: Start difference. First operand 213 states and 528 transitions. Second operand 6 states. [2020-10-22 00:42:51,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:42:51,665 INFO L93 Difference]: Finished difference Result 173 states and 387 transitions. [2020-10-22 00:42:51,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-22 00:42:51,665 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-10-22 00:42:51,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:42:51,667 INFO L225 Difference]: With dead ends: 173 [2020-10-22 00:42:51,667 INFO L226 Difference]: Without dead ends: 136 [2020-10-22 00:42:51,668 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-22 00:42:51,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-22 00:42:51,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2020-10-22 00:42:51,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-22 00:42:51,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 297 transitions. [2020-10-22 00:42:51,676 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 297 transitions. Word has length 12 [2020-10-22 00:42:51,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:42:51,676 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 297 transitions. [2020-10-22 00:42:51,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-22 00:42:51,677 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 297 transitions. [2020-10-22 00:42:51,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-22 00:42:51,678 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:42:51,679 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:42:51,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-22 00:42:51,679 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:42:51,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:42:51,679 INFO L82 PathProgramCache]: Analyzing trace with hash 685431305, now seen corresponding path program 1 times [2020-10-22 00:42:51,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:42:51,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441740449] [2020-10-22 00:42:51,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:42:51,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:42:51,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 00:42:51,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441740449] [2020-10-22 00:42:51,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 00:42:51,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-22 00:42:51,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [43822863] [2020-10-22 00:42:51,762 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:42:51,764 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:42:51,769 INFO L252 McrAutomatonBuilder]: Finished intersection with 40 states and 67 transitions. [2020-10-22 00:42:51,769 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:42:52,074 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3857#(<= ~__unbuffered_cnt~0 0)] [2020-10-22 00:42:52,074 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-22 00:42:52,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:42:52,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-22 00:42:52,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-22 00:42:52,076 INFO L87 Difference]: Start difference. First operand 136 states and 297 transitions. Second operand 7 states. [2020-10-22 00:42:52,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:42:52,126 INFO L93 Difference]: Finished difference Result 119 states and 261 transitions. [2020-10-22 00:42:52,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-22 00:42:52,126 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-22 00:42:52,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:42:52,128 INFO L225 Difference]: With dead ends: 119 [2020-10-22 00:42:52,128 INFO L226 Difference]: Without dead ends: 109 [2020-10-22 00:42:52,129 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-22 00:42:52,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-22 00:42:52,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-10-22 00:42:52,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-22 00:42:52,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 243 transitions. [2020-10-22 00:42:52,134 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 243 transitions. Word has length 15 [2020-10-22 00:42:52,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:42:52,135 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 243 transitions. [2020-10-22 00:42:52,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-22 00:42:52,135 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 243 transitions. [2020-10-22 00:42:52,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-22 00:42:52,137 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:42:52,137 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:42:52,137 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-22 00:42:52,137 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:42:52,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:42:52,138 INFO L82 PathProgramCache]: Analyzing trace with hash 461507696, now seen corresponding path program 1 times [2020-10-22 00:42:52,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:42:52,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632508290] [2020-10-22 00:42:52,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:42:52,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:42:52,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 00:42:52,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632508290] [2020-10-22 00:42:52,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 00:42:52,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 00:42:52,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1557949972] [2020-10-22 00:42:52,191 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:42:52,194 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:42:52,200 INFO L252 McrAutomatonBuilder]: Finished intersection with 47 states and 78 transitions. [2020-10-22 00:42:52,200 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:42:52,245 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:42:52,245 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 00:42:52,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:42:52,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 00:42:52,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-22 00:42:52,246 INFO L87 Difference]: Start difference. First operand 109 states and 243 transitions. Second operand 4 states. [2020-10-22 00:42:52,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:42:52,271 INFO L93 Difference]: Finished difference Result 135 states and 291 transitions. [2020-10-22 00:42:52,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-22 00:42:52,271 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-22 00:42:52,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:42:52,272 INFO L225 Difference]: With dead ends: 135 [2020-10-22 00:42:52,272 INFO L226 Difference]: Without dead ends: 55 [2020-10-22 00:42:52,273 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-22 00:42:52,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-22 00:42:52,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-10-22 00:42:52,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-22 00:42:52,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 99 transitions. [2020-10-22 00:42:52,276 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 99 transitions. Word has length 18 [2020-10-22 00:42:52,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:42:52,276 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 99 transitions. [2020-10-22 00:42:52,276 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 00:42:52,276 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 99 transitions. [2020-10-22 00:42:52,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-22 00:42:52,277 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:42:52,278 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:42:52,278 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-22 00:42:52,278 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:42:52,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:42:52,278 INFO L82 PathProgramCache]: Analyzing trace with hash 356647694, now seen corresponding path program 2 times [2020-10-22 00:42:52,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:42:52,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606903026] [2020-10-22 00:42:52,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:42:52,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:42:52,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 00:42:52,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606903026] [2020-10-22 00:42:52,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 00:42:52,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-22 00:42:52,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1398222423] [2020-10-22 00:42:52,350 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:42:52,352 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:42:52,360 INFO L252 McrAutomatonBuilder]: Finished intersection with 60 states and 109 transitions. [2020-10-22 00:42:52,361 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:42:52,447 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:42:52,447 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-22 00:42:52,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:42:52,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-22 00:42:52,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-22 00:42:52,448 INFO L87 Difference]: Start difference. First operand 55 states and 99 transitions. Second operand 5 states. [2020-10-22 00:42:52,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:42:52,480 INFO L93 Difference]: Finished difference Result 69 states and 121 transitions. [2020-10-22 00:42:52,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-22 00:42:52,481 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-22 00:42:52,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:42:52,482 INFO L225 Difference]: With dead ends: 69 [2020-10-22 00:42:52,482 INFO L226 Difference]: Without dead ends: 31 [2020-10-22 00:42:52,482 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-22 00:42:52,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-22 00:42:52,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-22 00:42:52,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-22 00:42:52,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 45 transitions. [2020-10-22 00:42:52,484 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 45 transitions. Word has length 18 [2020-10-22 00:42:52,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:42:52,485 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 45 transitions. [2020-10-22 00:42:52,485 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-22 00:42:52,485 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 45 transitions. [2020-10-22 00:42:52,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-22 00:42:52,486 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:42:52,486 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:42:52,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-22 00:42:52,486 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:42:52,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:42:52,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1017008488, now seen corresponding path program 3 times [2020-10-22 00:42:52,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:42:52,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283654864] [2020-10-22 00:42:52,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:42:52,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:42:52,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 00:42:52,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283654864] [2020-10-22 00:42:52,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 00:42:52,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-22 00:42:52,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [716008744] [2020-10-22 00:42:52,541 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:42:52,543 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:42:52,550 INFO L252 McrAutomatonBuilder]: Finished intersection with 50 states and 77 transitions. [2020-10-22 00:42:52,551 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:42:52,568 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:42:52,569 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-22 00:42:52,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:42:52,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-22 00:42:52,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-22 00:42:52,570 INFO L87 Difference]: Start difference. First operand 31 states and 45 transitions. Second operand 5 states. [2020-10-22 00:42:52,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:42:52,592 INFO L93 Difference]: Finished difference Result 30 states and 44 transitions. [2020-10-22 00:42:52,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-22 00:42:52,593 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-22 00:42:52,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:42:52,593 INFO L225 Difference]: With dead ends: 30 [2020-10-22 00:42:52,593 INFO L226 Difference]: Without dead ends: 0 [2020-10-22 00:42:52,594 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-22 00:42:52,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-22 00:42:52,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-22 00:42:52,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-22 00:42:52,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-22 00:42:52,595 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-10-22 00:42:52,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:42:52,595 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-22 00:42:52,595 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-22 00:42:52,595 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-22 00:42:52,595 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-22 00:42:52,596 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-22 00:42:52,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 12:42:52 BasicIcfg [2020-10-22 00:42:52,600 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-22 00:42:52,602 INFO L168 Benchmark]: Toolchain (without parser) took 5445.92 ms. Allocated memory was 148.9 MB in the beginning and 275.3 MB in the end (delta: 126.4 MB). Free memory was 102.4 MB in the beginning and 150.6 MB in the end (delta: -48.2 MB). Peak memory consumption was 78.1 MB. Max. memory is 7.1 GB. [2020-10-22 00:42:52,603 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 148.9 MB. Free memory was 122.2 MB in the beginning and 122.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-22 00:42:52,604 INFO L168 Benchmark]: CACSL2BoogieTranslator took 785.56 ms. Allocated memory was 148.9 MB in the beginning and 205.0 MB in the end (delta: 56.1 MB). Free memory was 101.3 MB in the beginning and 159.8 MB in the end (delta: -58.5 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. [2020-10-22 00:42:52,605 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.51 ms. Allocated memory is still 205.0 MB. Free memory was 159.8 MB in the beginning and 157.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-10-22 00:42:52,605 INFO L168 Benchmark]: Boogie Preprocessor took 27.33 ms. Allocated memory is still 205.0 MB. Free memory was 157.9 MB in the beginning and 156.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-10-22 00:42:52,606 INFO L168 Benchmark]: RCFGBuilder took 493.73 ms. Allocated memory is still 205.0 MB. Free memory was 156.0 MB in the beginning and 132.3 MB in the end (delta: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. [2020-10-22 00:42:52,607 INFO L168 Benchmark]: TraceAbstraction took 4070.14 ms. Allocated memory was 205.0 MB in the beginning and 275.3 MB in the end (delta: 70.3 MB). Free memory was 131.7 MB in the beginning and 150.6 MB in the end (delta: -18.9 MB). Peak memory consumption was 51.3 MB. Max. memory is 7.1 GB. [2020-10-22 00:42:52,611 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 148.9 MB. Free memory was 122.2 MB in the beginning and 122.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 785.56 ms. Allocated memory was 148.9 MB in the beginning and 205.0 MB in the end (delta: 56.1 MB). Free memory was 101.3 MB in the beginning and 159.8 MB in the end (delta: -58.5 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 58.51 ms. Allocated memory is still 205.0 MB. Free memory was 159.8 MB in the beginning and 157.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.33 ms. Allocated memory is still 205.0 MB. Free memory was 157.9 MB in the beginning and 156.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 493.73 ms. Allocated memory is still 205.0 MB. Free memory was 156.0 MB in the beginning and 132.3 MB in the end (delta: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4070.14 ms. Allocated memory was 205.0 MB in the beginning and 275.3 MB in the end (delta: 70.3 MB). Free memory was 131.7 MB in the beginning and 150.6 MB in the end (delta: -18.9 MB). Peak memory consumption was 51.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 751 VarBasedMoverChecksPositive, 21 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 55 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.7s, 86 PlacesBefore, 32 PlacesAfterwards, 79 TransitionsBefore, 23 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 13 ConcurrentYvCompositions, 2 ChoiceCompositions, 68 TotalNumberOfCompositions, 2658 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.9s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 172 SDtfs, 128 SDslu, 307 SDs, 0 SdLazy, 112 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 117 GetRequests, 85 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 108 NumberOfCodeBlocks, 108 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 100 ConstructedInterpolants, 0 QuantifiedInterpolants, 3676 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...