/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/safe031_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-bf4350c [2020-09-18 02:07:55,022 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-18 02:07:55,027 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-18 02:07:55,058 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-18 02:07:55,058 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-18 02:07:55,059 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-18 02:07:55,060 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-18 02:07:55,062 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-18 02:07:55,064 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-18 02:07:55,065 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-18 02:07:55,066 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-18 02:07:55,067 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-18 02:07:55,067 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-18 02:07:55,068 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-18 02:07:55,070 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-18 02:07:55,071 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-18 02:07:55,072 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-18 02:07:55,073 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-18 02:07:55,075 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-18 02:07:55,077 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-18 02:07:55,079 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-18 02:07:55,080 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-18 02:07:55,081 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-18 02:07:55,082 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-18 02:07:55,085 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-18 02:07:55,089 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-18 02:07:55,090 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-18 02:07:55,091 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-18 02:07:55,092 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-18 02:07:55,093 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-18 02:07:55,093 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-18 02:07:55,094 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-18 02:07:55,094 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-18 02:07:55,094 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-18 02:07:55,095 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-18 02:07:55,096 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-18 02:07:55,097 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 [2020-09-18 02:07:55,129 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-18 02:07:55,132 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-18 02:07:55,134 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-18 02:07:55,134 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-18 02:07:55,134 INFO L138 SettingsManager]: * Use SBE=true [2020-09-18 02:07:55,134 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-18 02:07:55,135 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-18 02:07:55,135 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-18 02:07:55,135 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-18 02:07:55,135 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-18 02:07:55,136 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-18 02:07:55,136 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-18 02:07:55,137 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-18 02:07:55,137 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-18 02:07:55,137 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-18 02:07:55,137 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-18 02:07:55,137 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-18 02:07:55,138 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-18 02:07:55,138 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-18 02:07:55,138 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-18 02:07:55,138 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-18 02:07:55,139 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-18 02:07:55,139 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-18 02:07:55,140 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-18 02:07:55,140 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-18 02:07:55,140 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-18 02:07:55,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-18 02:07:55,140 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-18 02:07:55,141 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-18 02:07:55,141 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-18 02:07:55,142 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-18 02:07:55,595 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-18 02:07:55,612 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-18 02:07:55,617 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-18 02:07:55,619 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-18 02:07:55,620 INFO L275 PluginConnector]: CDTParser initialized [2020-09-18 02:07:55,622 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe031_tso.opt.i [2020-09-18 02:07:55,702 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2893c3e9/1e4a0cfa98d14eef832379088d87defd/FLAG204078d9f [2020-09-18 02:07:56,420 INFO L306 CDTParser]: Found 1 translation units. [2020-09-18 02:07:56,423 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe031_tso.opt.i [2020-09-18 02:07:56,439 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2893c3e9/1e4a0cfa98d14eef832379088d87defd/FLAG204078d9f [2020-09-18 02:07:56,645 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2893c3e9/1e4a0cfa98d14eef832379088d87defd [2020-09-18 02:07:56,659 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-18 02:07:56,665 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-18 02:07:56,666 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-18 02:07:56,666 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-18 02:07:56,671 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-18 02:07:56,672 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 02:07:56" (1/1) ... [2020-09-18 02:07:56,676 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10f1bc11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:07:56, skipping insertion in model container [2020-09-18 02:07:56,677 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 02:07:56" (1/1) ... [2020-09-18 02:07:56,687 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-18 02:07:56,745 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-18 02:07:57,320 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-18 02:07:57,339 INFO L203 MainTranslator]: Completed pre-run [2020-09-18 02:07:57,396 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-18 02:07:57,478 INFO L208 MainTranslator]: Completed translation [2020-09-18 02:07:57,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:07:57 WrapperNode [2020-09-18 02:07:57,479 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-18 02:07:57,480 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-18 02:07:57,480 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-18 02:07:57,480 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-18 02:07:57,492 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:07:57" (1/1) ... [2020-09-18 02:07:57,512 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:07:57" (1/1) ... [2020-09-18 02:07:57,538 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-18 02:07:57,538 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-18 02:07:57,539 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-18 02:07:57,539 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-18 02:07:57,548 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:07:57" (1/1) ... [2020-09-18 02:07:57,548 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:07:57" (1/1) ... [2020-09-18 02:07:57,552 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:07:57" (1/1) ... [2020-09-18 02:07:57,553 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:07:57" (1/1) ... [2020-09-18 02:07:57,560 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:07:57" (1/1) ... [2020-09-18 02:07:57,563 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:07:57" (1/1) ... [2020-09-18 02:07:57,566 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:07:57" (1/1) ... [2020-09-18 02:07:57,569 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-18 02:07:57,570 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-18 02:07:57,571 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-18 02:07:57,571 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-18 02:07:57,572 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:07:57" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-18 02:07:57,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-18 02:07:57,658 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-18 02:07:57,658 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-18 02:07:57,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-18 02:07:57,658 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-18 02:07:57,659 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-18 02:07:57,659 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-18 02:07:57,659 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-18 02:07:57,659 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-18 02:07:57,659 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-18 02:07:57,660 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-18 02:07:57,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-18 02:07:57,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-18 02:07:57,663 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-18 02:07:58,057 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-18 02:07:58,058 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-18 02:07:58,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 02:07:58 BoogieIcfgContainer [2020-09-18 02:07:58,063 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-18 02:07:58,065 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-18 02:07:58,065 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-18 02:07:58,069 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-18 02:07:58,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 02:07:56" (1/3) ... [2020-09-18 02:07:58,070 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a83660d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 02:07:58, skipping insertion in model container [2020-09-18 02:07:58,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:07:57" (2/3) ... [2020-09-18 02:07:58,071 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a83660d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 02:07:58, skipping insertion in model container [2020-09-18 02:07:58,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 02:07:58" (3/3) ... [2020-09-18 02:07:58,073 INFO L109 eAbstractionObserver]: Analyzing ICFG safe031_tso.opt.i [2020-09-18 02:07:58,085 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-18 02:07:58,086 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-18 02:07:58,097 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-18 02:07:58,098 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-18 02:07:58,130 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:07:58,130 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:07:58,131 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:07:58,131 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:07:58,131 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:07:58,132 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:07:58,132 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:07:58,132 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:07:58,133 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:07:58,133 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:07:58,133 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:07:58,134 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:07:58,134 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:07:58,134 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:07:58,135 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:07:58,135 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:07:58,135 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:07:58,136 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:07:58,140 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:07:58,141 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:07:58,141 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:07:58,141 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:07:58,149 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:07:58,149 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:07:58,150 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:07:58,150 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:07:58,156 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:07:58,156 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:07:58,156 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:07:58,156 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:07:58,179 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-18 02:07:58,203 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-18 02:07:58,203 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-18 02:07:58,203 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-18 02:07:58,203 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-18 02:07:58,203 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-18 02:07:58,204 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-18 02:07:58,204 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-18 02:07:58,204 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-18 02:07:58,222 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-09-18 02:07:58,224 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-09-18 02:07:58,275 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-09-18 02:07:58,275 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-18 02:07:58,282 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-18 02:07:58,285 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-09-18 02:07:58,306 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-09-18 02:07:58,306 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-18 02:07:58,307 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-18 02:07:58,309 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-18 02:07:58,311 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-18 02:07:59,785 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2238 [2020-09-18 02:07:59,785 INFO L214 etLargeBlockEncoding]: Total number of compositions: 55 [2020-09-18 02:07:59,790 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-09-18 02:07:59,818 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-09-18 02:07:59,821 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-09-18 02:07:59,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-18 02:07:59,831 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:07:59,832 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:07:59,833 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:07:59,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:07:59,841 INFO L82 PathProgramCache]: Analyzing trace with hash -389059823, now seen corresponding path program 1 times [2020-09-18 02:07:59,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:07:59,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214113603] [2020-09-18 02:07:59,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:08:00,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:08:00,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 02:08:00,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214113603] [2020-09-18 02:08:00,143 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 02:08:00,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-18 02:08:00,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1780278191] [2020-09-18 02:08:00,145 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:08:00,149 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:08:00,166 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-18 02:08:00,166 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:08:00,168 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 02:08:00,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-18 02:08:00,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:08:00,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-18 02:08:00,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 02:08:00,192 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-09-18 02:08:00,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:08:00,233 INFO L93 Difference]: Finished difference Result 290 states and 834 transitions. [2020-09-18 02:08:00,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-18 02:08:00,235 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-18 02:08:00,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:08:00,254 INFO L225 Difference]: With dead ends: 290 [2020-09-18 02:08:00,255 INFO L226 Difference]: Without dead ends: 226 [2020-09-18 02:08:00,256 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 02:08:00,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-09-18 02:08:00,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-09-18 02:08:00,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-09-18 02:08:00,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 626 transitions. [2020-09-18 02:08:00,342 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 626 transitions. Word has length 8 [2020-09-18 02:08:00,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:08:00,343 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 626 transitions. [2020-09-18 02:08:00,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-18 02:08:00,344 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 626 transitions. [2020-09-18 02:08:00,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-18 02:08:00,348 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:08:00,348 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:08:00,349 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-18 02:08:00,349 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:08:00,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:08:00,349 INFO L82 PathProgramCache]: Analyzing trace with hash 824029864, now seen corresponding path program 1 times [2020-09-18 02:08:00,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:08:00,352 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314966827] [2020-09-18 02:08:00,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:08:00,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:08:00,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 02:08:00,503 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314966827] [2020-09-18 02:08:00,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 02:08:00,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-18 02:08:00,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1006429820] [2020-09-18 02:08:00,504 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:08:00,505 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:08:00,511 INFO L274 McrAutomatonBuilder]: Finished intersection with 11 states and 11 transitions. [2020-09-18 02:08:00,512 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:08:00,521 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 02:08:00,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-18 02:08:00,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:08:00,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-18 02:08:00,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 02:08:00,524 INFO L87 Difference]: Start difference. First operand 226 states and 626 transitions. Second operand 3 states. [2020-09-18 02:08:00,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:08:00,536 INFO L93 Difference]: Finished difference Result 220 states and 604 transitions. [2020-09-18 02:08:00,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-18 02:08:00,536 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-09-18 02:08:00,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:08:00,539 INFO L225 Difference]: With dead ends: 220 [2020-09-18 02:08:00,540 INFO L226 Difference]: Without dead ends: 220 [2020-09-18 02:08:00,541 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 02:08:00,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-09-18 02:08:00,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2020-09-18 02:08:00,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-09-18 02:08:00,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 604 transitions. [2020-09-18 02:08:00,564 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 604 transitions. Word has length 9 [2020-09-18 02:08:00,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:08:00,565 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 604 transitions. [2020-09-18 02:08:00,565 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-18 02:08:00,565 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 604 transitions. [2020-09-18 02:08:00,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-18 02:08:00,566 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:08:00,567 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:08:00,567 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-18 02:08:00,567 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:08:00,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:08:00,567 INFO L82 PathProgramCache]: Analyzing trace with hash -224925294, now seen corresponding path program 1 times [2020-09-18 02:08:00,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:08:00,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830782789] [2020-09-18 02:08:00,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:08:00,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:08:00,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 02:08:00,672 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830782789] [2020-09-18 02:08:00,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 02:08:00,672 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-18 02:08:00,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [271962143] [2020-09-18 02:08:00,673 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:08:00,674 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:08:00,676 INFO L274 McrAutomatonBuilder]: Finished intersection with 19 states and 27 transitions. [2020-09-18 02:08:00,676 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:08:00,739 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 02:08:00,773 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 02:08:00,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-18 02:08:00,774 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:08:00,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-18 02:08:00,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-18 02:08:00,774 INFO L87 Difference]: Start difference. First operand 220 states and 604 transitions. Second operand 4 states. [2020-09-18 02:08:00,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:08:00,818 INFO L93 Difference]: Finished difference Result 240 states and 599 transitions. [2020-09-18 02:08:00,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-18 02:08:00,819 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-09-18 02:08:00,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:08:00,821 INFO L225 Difference]: With dead ends: 240 [2020-09-18 02:08:00,821 INFO L226 Difference]: Without dead ends: 176 [2020-09-18 02:08:00,822 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-18 02:08:00,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-09-18 02:08:00,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2020-09-18 02:08:00,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-09-18 02:08:00,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 428 transitions. [2020-09-18 02:08:00,836 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 428 transitions. Word has length 10 [2020-09-18 02:08:00,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:08:00,837 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 428 transitions. [2020-09-18 02:08:00,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-18 02:08:00,837 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 428 transitions. [2020-09-18 02:08:00,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-18 02:08:00,839 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:08:00,839 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:08:00,839 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-18 02:08:00,839 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:08:00,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:08:00,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1617246421, now seen corresponding path program 1 times [2020-09-18 02:08:00,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:08:00,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123304271] [2020-09-18 02:08:00,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:08:00,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:08:00,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 02:08:00,895 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123304271] [2020-09-18 02:08:00,895 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 02:08:00,895 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-18 02:08:00,896 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1433369310] [2020-09-18 02:08:00,896 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:08:00,897 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:08:00,898 INFO L274 McrAutomatonBuilder]: Finished intersection with 12 states and 11 transitions. [2020-09-18 02:08:00,898 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:08:00,898 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 02:08:00,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-18 02:08:00,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:08:00,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-18 02:08:00,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 02:08:00,900 INFO L87 Difference]: Start difference. First operand 176 states and 428 transitions. Second operand 3 states. [2020-09-18 02:08:00,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:08:00,910 INFO L93 Difference]: Finished difference Result 225 states and 522 transitions. [2020-09-18 02:08:00,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-18 02:08:00,910 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-09-18 02:08:00,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:08:00,912 INFO L225 Difference]: With dead ends: 225 [2020-09-18 02:08:00,912 INFO L226 Difference]: Without dead ends: 183 [2020-09-18 02:08:00,913 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 02:08:00,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-09-18 02:08:00,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 171. [2020-09-18 02:08:00,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-09-18 02:08:00,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 396 transitions. [2020-09-18 02:08:00,933 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 396 transitions. Word has length 11 [2020-09-18 02:08:00,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:08:00,933 INFO L479 AbstractCegarLoop]: Abstraction has 171 states and 396 transitions. [2020-09-18 02:08:00,933 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-18 02:08:00,934 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 396 transitions. [2020-09-18 02:08:00,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-18 02:08:00,940 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:08:00,940 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:08:00,941 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-18 02:08:00,941 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:08:00,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:08:00,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1444727206, now seen corresponding path program 1 times [2020-09-18 02:08:00,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:08:00,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324129827] [2020-09-18 02:08:00,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:08:00,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:08:01,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 02:08:01,050 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324129827] [2020-09-18 02:08:01,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 02:08:01,051 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-18 02:08:01,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [533500071] [2020-09-18 02:08:01,051 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:08:01,053 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:08:01,055 INFO L274 McrAutomatonBuilder]: Finished intersection with 29 states and 44 transitions. [2020-09-18 02:08:01,056 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:08:01,143 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3257#(<= ~__unbuffered_cnt~0 0)] [2020-09-18 02:08:01,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-18 02:08:01,143 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:08:01,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-18 02:08:01,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-18 02:08:01,144 INFO L87 Difference]: Start difference. First operand 171 states and 396 transitions. Second operand 6 states. [2020-09-18 02:08:01,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:08:01,202 INFO L93 Difference]: Finished difference Result 162 states and 347 transitions. [2020-09-18 02:08:01,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-18 02:08:01,203 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-09-18 02:08:01,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:08:01,204 INFO L225 Difference]: With dead ends: 162 [2020-09-18 02:08:01,204 INFO L226 Difference]: Without dead ends: 125 [2020-09-18 02:08:01,205 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 4 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-18 02:08:01,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-09-18 02:08:01,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2020-09-18 02:08:01,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-09-18 02:08:01,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 263 transitions. [2020-09-18 02:08:01,211 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 263 transitions. Word has length 12 [2020-09-18 02:08:01,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:08:01,212 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 263 transitions. [2020-09-18 02:08:01,212 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-18 02:08:01,212 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 263 transitions. [2020-09-18 02:08:01,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-18 02:08:01,213 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:08:01,213 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:08:01,213 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-18 02:08:01,214 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:08:01,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:08:01,214 INFO L82 PathProgramCache]: Analyzing trace with hash -1109140729, now seen corresponding path program 1 times [2020-09-18 02:08:01,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:08:01,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350402964] [2020-09-18 02:08:01,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:08:01,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:08:01,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 02:08:01,272 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350402964] [2020-09-18 02:08:01,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 02:08:01,273 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-18 02:08:01,273 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2006087603] [2020-09-18 02:08:01,273 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:08:01,275 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:08:01,281 INFO L274 McrAutomatonBuilder]: Finished intersection with 39 states and 66 transitions. [2020-09-18 02:08:01,281 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:08:01,364 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 02:08:01,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-18 02:08:01,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:08:01,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-18 02:08:01,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 02:08:01,365 INFO L87 Difference]: Start difference. First operand 125 states and 263 transitions. Second operand 3 states. [2020-09-18 02:08:01,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:08:01,375 INFO L93 Difference]: Finished difference Result 157 states and 314 transitions. [2020-09-18 02:08:01,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-18 02:08:01,376 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-09-18 02:08:01,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:08:01,377 INFO L225 Difference]: With dead ends: 157 [2020-09-18 02:08:01,377 INFO L226 Difference]: Without dead ends: 120 [2020-09-18 02:08:01,378 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 02:08:01,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-09-18 02:08:01,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 118. [2020-09-18 02:08:01,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-09-18 02:08:01,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 233 transitions. [2020-09-18 02:08:01,383 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 233 transitions. Word has length 14 [2020-09-18 02:08:01,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:08:01,384 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 233 transitions. [2020-09-18 02:08:01,384 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-18 02:08:01,384 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 233 transitions. [2020-09-18 02:08:01,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-18 02:08:01,385 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:08:01,385 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:08:01,386 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-18 02:08:01,386 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:08:01,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:08:01,386 INFO L82 PathProgramCache]: Analyzing trace with hash -1574578981, now seen corresponding path program 1 times [2020-09-18 02:08:01,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:08:01,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90725903] [2020-09-18 02:08:01,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:08:01,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:08:01,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 02:08:01,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90725903] [2020-09-18 02:08:01,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 02:08:01,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-18 02:08:01,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [283437113] [2020-09-18 02:08:01,485 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:08:01,487 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:08:01,490 INFO L274 McrAutomatonBuilder]: Finished intersection with 29 states and 40 transitions. [2020-09-18 02:08:01,490 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:08:01,503 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [4074#(<= ~__unbuffered_cnt~0 0)] [2020-09-18 02:08:01,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-18 02:08:01,504 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:08:01,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-18 02:08:01,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-18 02:08:01,504 INFO L87 Difference]: Start difference. First operand 118 states and 233 transitions. Second operand 7 states. [2020-09-18 02:08:01,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:08:01,562 INFO L93 Difference]: Finished difference Result 112 states and 219 transitions. [2020-09-18 02:08:01,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-18 02:08:01,563 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-09-18 02:08:01,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:08:01,564 INFO L225 Difference]: With dead ends: 112 [2020-09-18 02:08:01,564 INFO L226 Difference]: Without dead ends: 36 [2020-09-18 02:08:01,564 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-09-18 02:08:01,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-09-18 02:08:01,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-09-18 02:08:01,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-18 02:08:01,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-09-18 02:08:01,566 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 14 [2020-09-18 02:08:01,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:08:01,567 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-09-18 02:08:01,567 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-18 02:08:01,567 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-09-18 02:08:01,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-18 02:08:01,568 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:08:01,568 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:08:01,568 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-18 02:08:01,568 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:08:01,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:08:01,569 INFO L82 PathProgramCache]: Analyzing trace with hash 16794271, now seen corresponding path program 1 times [2020-09-18 02:08:01,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:08:01,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64262939] [2020-09-18 02:08:01,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:08:01,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:08:01,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 02:08:01,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64262939] [2020-09-18 02:08:01,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 02:08:01,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-18 02:08:01,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2105081868] [2020-09-18 02:08:01,626 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:08:01,627 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:08:01,637 INFO L274 McrAutomatonBuilder]: Finished intersection with 67 states and 122 transitions. [2020-09-18 02:08:01,637 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:08:01,677 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 02:08:01,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-18 02:08:01,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:08:01,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-18 02:08:01,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-18 02:08:01,679 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 4 states. [2020-09-18 02:08:01,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:08:01,689 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-09-18 02:08:01,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-18 02:08:01,690 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-18 02:08:01,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:08:01,690 INFO L225 Difference]: With dead ends: 35 [2020-09-18 02:08:01,690 INFO L226 Difference]: Without dead ends: 0 [2020-09-18 02:08:01,691 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-18 02:08:01,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-18 02:08:01,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-18 02:08:01,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-18 02:08:01,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-18 02:08:01,692 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-09-18 02:08:01,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:08:01,692 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-18 02:08:01,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-18 02:08:01,692 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-18 02:08:01,692 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-18 02:08:01,693 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-18 02:08:01,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 02:08:01 BasicIcfg [2020-09-18 02:08:01,697 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-18 02:08:01,701 INFO L168 Benchmark]: Toolchain (without parser) took 5038.72 ms. Allocated memory was 138.4 MB in the beginning and 250.6 MB in the end (delta: 112.2 MB). Free memory was 98.8 MB in the beginning and 163.3 MB in the end (delta: -64.6 MB). Peak memory consumption was 47.6 MB. Max. memory is 7.1 GB. [2020-09-18 02:08:01,702 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 138.4 MB. Free memory was 118.7 MB in the beginning and 118.5 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-09-18 02:08:01,703 INFO L168 Benchmark]: CACSL2BoogieTranslator took 812.85 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 98.3 MB in the beginning and 159.5 MB in the end (delta: -61.1 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. [2020-09-18 02:08:01,704 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.72 ms. Allocated memory is still 202.4 MB. Free memory was 159.5 MB in the beginning and 157.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-18 02:08:01,705 INFO L168 Benchmark]: Boogie Preprocessor took 31.09 ms. Allocated memory is still 202.4 MB. Free memory was 157.4 MB in the beginning and 156.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-09-18 02:08:01,705 INFO L168 Benchmark]: RCFGBuilder took 493.17 ms. Allocated memory is still 202.4 MB. Free memory was 156.1 MB in the beginning and 134.1 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-09-18 02:08:01,706 INFO L168 Benchmark]: TraceAbstraction took 3632.85 ms. Allocated memory was 202.4 MB in the beginning and 250.6 MB in the end (delta: 48.2 MB). Free memory was 133.4 MB in the beginning and 163.3 MB in the end (delta: -29.9 MB). Peak memory consumption was 18.3 MB. Max. memory is 7.1 GB. [2020-09-18 02:08:01,711 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 138.4 MB. Free memory was 118.7 MB in the beginning and 118.5 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 812.85 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 98.3 MB in the beginning and 159.5 MB in the end (delta: -61.1 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 58.72 ms. Allocated memory is still 202.4 MB. Free memory was 159.5 MB in the beginning and 157.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 31.09 ms. Allocated memory is still 202.4 MB. Free memory was 157.4 MB in the beginning and 156.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 493.17 ms. Allocated memory is still 202.4 MB. Free memory was 156.1 MB in the beginning and 134.1 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3632.85 ms. Allocated memory was 202.4 MB in the beginning and 250.6 MB in the end (delta: 48.2 MB). Free memory was 133.4 MB in the beginning and 163.3 MB in the end (delta: -29.9 MB). Peak memory consumption was 18.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.5s, 77 ProgramPointsBefore, 31 ProgramPointsAfterwards, 69 TransitionsBefore, 21 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 2 ChoiceCompositions, 635 VarBasedMoverChecksPositive, 24 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2238 CheckedPairsTotal, 55 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.4s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 157 SDtfs, 105 SDslu, 204 SDs, 0 SdLazy, 104 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 85 GetRequests, 60 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 14 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 95 NumberOfCodeBlocks, 95 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 87 ConstructedInterpolants, 0 QuantifiedInterpolants, 2531 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...