/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe034_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 11:26:26,995 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 11:26:26,998 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 11:26:27,015 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 11:26:27,016 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 11:26:27,017 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 11:26:27,019 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 11:26:27,028 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 11:26:27,030 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 11:26:27,033 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 11:26:27,034 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 11:26:27,036 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 11:26:27,036 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 11:26:27,038 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 11:26:27,040 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 11:26:27,041 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 11:26:27,043 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 11:26:27,044 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 11:26:27,047 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 11:26:27,052 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 11:26:27,056 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 11:26:27,058 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 11:26:27,059 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 11:26:27,060 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 11:26:27,062 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 11:26:27,063 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 11:26:27,063 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 11:26:27,065 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 11:26:27,066 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 11:26:27,067 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 11:26:27,068 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 11:26:27,068 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 11:26:27,069 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 11:26:27,070 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 11:26:27,071 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 11:26:27,071 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 11:26:27,072 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 11:26:27,072 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 11:26:27,072 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 11:26:27,073 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 11:26:27,075 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 11:26:27,075 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe-McrStrategy.epf [2020-04-18 11:26:27,110 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 11:26:27,110 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 11:26:27,111 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 11:26:27,111 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 11:26:27,111 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 11:26:27,112 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 11:26:27,112 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 11:26:27,113 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 11:26:27,114 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 11:26:27,114 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 11:26:27,114 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 11:26:27,114 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 11:26:27,114 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 11:26:27,115 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 11:26:27,115 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 11:26:27,115 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 11:26:27,116 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 11:26:27,116 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 11:26:27,117 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 11:26:27,117 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 11:26:27,117 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 11:26:27,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 11:26:27,117 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 11:26:27,117 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 11:26:27,118 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 11:26:27,118 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 11:26:27,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 11:26:27,118 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 11:26:27,118 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 11:26:27,118 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 11:26:27,383 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 11:26:27,394 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 11:26:27,397 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 11:26:27,398 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 11:26:27,399 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 11:26:27,400 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe034_tso.opt.i [2020-04-18 11:26:27,472 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00ad7877a/a3e5e8a33945400bba7fe98e446e415a/FLAGf51b6f79b [2020-04-18 11:26:28,018 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 11:26:28,019 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe034_tso.opt.i [2020-04-18 11:26:28,033 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00ad7877a/a3e5e8a33945400bba7fe98e446e415a/FLAGf51b6f79b [2020-04-18 11:26:28,349 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00ad7877a/a3e5e8a33945400bba7fe98e446e415a [2020-04-18 11:26:28,356 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 11:26:28,379 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 11:26:28,380 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 11:26:28,381 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 11:26:28,385 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 11:26:28,386 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 11:26:28" (1/1) ... [2020-04-18 11:26:28,388 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b0b026d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:26:28, skipping insertion in model container [2020-04-18 11:26:28,389 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 11:26:28" (1/1) ... [2020-04-18 11:26:28,396 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 11:26:28,453 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 11:26:28,939 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 11:26:28,952 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 11:26:29,019 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 11:26:29,090 INFO L208 MainTranslator]: Completed translation [2020-04-18 11:26:29,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:26:29 WrapperNode [2020-04-18 11:26:29,091 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 11:26:29,092 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 11:26:29,092 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 11:26:29,092 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 11:26:29,101 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:26:29" (1/1) ... [2020-04-18 11:26:29,117 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:26:29" (1/1) ... [2020-04-18 11:26:29,140 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 11:26:29,140 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 11:26:29,140 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 11:26:29,140 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 11:26:29,149 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:26:29" (1/1) ... [2020-04-18 11:26:29,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:26:29" (1/1) ... [2020-04-18 11:26:29,152 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:26:29" (1/1) ... [2020-04-18 11:26:29,152 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:26:29" (1/1) ... [2020-04-18 11:26:29,158 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:26:29" (1/1) ... [2020-04-18 11:26:29,161 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:26:29" (1/1) ... [2020-04-18 11:26:29,163 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:26:29" (1/1) ... [2020-04-18 11:26:29,166 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 11:26:29,166 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 11:26:29,166 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 11:26:29,166 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 11:26:29,167 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:26:29" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 11:26:29,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 11:26:29,221 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 11:26:29,221 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 11:26:29,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 11:26:29,221 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 11:26:29,222 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 11:26:29,222 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 11:26:29,222 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 11:26:29,222 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 11:26:29,222 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 11:26:29,222 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 11:26:29,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 11:26:29,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 11:26:29,224 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 11:26:29,605 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 11:26:29,606 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 11:26:29,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 11:26:29 BoogieIcfgContainer [2020-04-18 11:26:29,610 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 11:26:29,611 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 11:26:29,611 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 11:26:29,615 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 11:26:29,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 11:26:28" (1/3) ... [2020-04-18 11:26:29,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19080ae2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 11:26:29, skipping insertion in model container [2020-04-18 11:26:29,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:26:29" (2/3) ... [2020-04-18 11:26:29,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19080ae2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 11:26:29, skipping insertion in model container [2020-04-18 11:26:29,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 11:26:29" (3/3) ... [2020-04-18 11:26:29,618 INFO L109 eAbstractionObserver]: Analyzing ICFG safe034_tso.opt.i [2020-04-18 11:26:29,627 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 11:26:29,627 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 11:26:29,633 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 11:26:29,634 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 11:26:29,659 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:26:29,659 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:26:29,660 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:26:29,660 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:26:29,660 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:26:29,661 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:26:29,661 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:26:29,661 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:26:29,662 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:26:29,662 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:26:29,662 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:26:29,663 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:26:29,663 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:26:29,663 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:26:29,664 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:26:29,664 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:26:29,664 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:26:29,664 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:26:29,668 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:26:29,669 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:26:29,669 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:26:29,669 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:26:29,676 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:26:29,677 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:26:29,677 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:26:29,678 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:26:29,680 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:26:29,680 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:26:29,680 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:26:29,680 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:26:29,696 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 11:26:29,714 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 11:26:29,715 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 11:26:29,715 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 11:26:29,715 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 11:26:29,715 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 11:26:29,715 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 11:26:29,716 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 11:26:29,716 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 11:26:29,729 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-04-18 11:26:29,731 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 11:26:29,771 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 11:26:29,771 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 11:26:29,776 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 11:26:29,779 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 11:26:29,801 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 11:26:29,801 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 11:26:29,802 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 11:26:29,804 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 11:26:29,805 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 11:26:31,508 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2732 [2020-04-18 11:26:31,508 INFO L214 etLargeBlockEncoding]: Total number of compositions: 60 [2020-04-18 11:26:31,512 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-04-18 11:26:31,546 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-18 11:26:31,549 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-18 11:26:31,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 11:26:31,558 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:26:31,559 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:26:31,559 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:26:31,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:26:31,565 INFO L82 PathProgramCache]: Analyzing trace with hash 760003701, now seen corresponding path program 1 times [2020-04-18 11:26:31,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:26:31,573 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2144570438] [2020-04-18 11:26:31,588 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:26:31,597 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 11:26:31,599 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-04-18 11:26:31,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 11:26:31,599 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:26:31,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:26:31,600 INFO L82 PathProgramCache]: Analyzing trace with hash 760003701, now seen corresponding path program 2 times [2020-04-18 11:26:31,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:26:31,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94532025] [2020-04-18 11:26:31,604 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:26:31,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:26:31,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:26:31,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94532025] [2020-04-18 11:26:31,833 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:26:31,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 11:26:31,834 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:26:31,835 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:26:31,838 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 11:26:31,838 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:26:31,846 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:26:31,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:26:31,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:26:31,852 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2020-04-18 11:26:31,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:26:31,856 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-04-18 11:26:31,856 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-04-18 11:26:31,856 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:26:31,857 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2144570438] [2020-04-18 11:26:31,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:26:31,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 11:26:31,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2144570438] [2020-04-18 11:26:31,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 11:26:31,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:26:31,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:26:31,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:26:31,864 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-18 11:26:31,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:26:31,904 INFO L93 Difference]: Finished difference Result 290 states and 834 transitions. [2020-04-18 11:26:31,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 11:26:31,908 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-18 11:26:31,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:26:31,933 INFO L225 Difference]: With dead ends: 290 [2020-04-18 11:26:31,933 INFO L226 Difference]: Without dead ends: 226 [2020-04-18 11:26:31,940 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:26:31,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-04-18 11:26:32,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-04-18 11:26:32,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-04-18 11:26:32,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 626 transitions. [2020-04-18 11:26:32,032 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 626 transitions. Word has length 8 [2020-04-18 11:26:32,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:26:32,033 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 626 transitions. [2020-04-18 11:26:32,034 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 11:26:32,034 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 626 transitions. [2020-04-18 11:26:32,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:26:32,035 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:26:32,035 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:26:32,035 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:26:32,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:26:32,036 INFO L82 PathProgramCache]: Analyzing trace with hash 2069729619, now seen corresponding path program 1 times [2020-04-18 11:26:32,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:26:32,036 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1191819757] [2020-04-18 11:26:32,037 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:26:32,038 INFO L259 McrAutomatonBuilder]: Finished intersection with 16 states and 21 transitions. [2020-04-18 11:26:32,038 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-04-18 11:26:32,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:26:32,039 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:26:32,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:26:32,039 INFO L82 PathProgramCache]: Analyzing trace with hash 2069729619, now seen corresponding path program 2 times [2020-04-18 11:26:32,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:26:32,040 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408266725] [2020-04-18 11:26:32,040 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:26:32,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:26:32,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:26:32,145 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408266725] [2020-04-18 11:26:32,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:26:32,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:26:32,146 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:26:32,147 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:26:32,149 INFO L259 McrAutomatonBuilder]: Finished intersection with 15 states and 19 transitions. [2020-04-18 11:26:32,149 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:26:32,161 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:26:32,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:26:32,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:26:32,162 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 4 states. [2020-04-18 11:26:32,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:26:32,176 INFO L93 Difference]: Finished difference Result 16 states and 21 transitions. [2020-04-18 11:26:32,177 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 21 transitions. [2020-04-18 11:26:32,177 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:26:32,177 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1191819757] [2020-04-18 11:26:32,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:26:32,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:26:32,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1191819757] [2020-04-18 11:26:32,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 11:26:32,179 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:26:32,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:26:32,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:26:32,179 INFO L87 Difference]: Start difference. First operand 226 states and 626 transitions. Second operand 4 states. [2020-04-18 11:26:32,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:26:32,211 INFO L93 Difference]: Finished difference Result 242 states and 605 transitions. [2020-04-18 11:26:32,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 11:26:32,212 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-18 11:26:32,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:26:32,214 INFO L225 Difference]: With dead ends: 242 [2020-04-18 11:26:32,214 INFO L226 Difference]: Without dead ends: 178 [2020-04-18 11:26:32,215 INFO L678 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 [2020-04-18 11:26:32,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-04-18 11:26:32,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2020-04-18 11:26:32,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-04-18 11:26:32,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 434 transitions. [2020-04-18 11:26:32,227 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 434 transitions. Word has length 9 [2020-04-18 11:26:32,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:26:32,227 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 434 transitions. [2020-04-18 11:26:32,227 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 11:26:32,227 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 434 transitions. [2020-04-18 11:26:32,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 11:26:32,228 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:26:32,229 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:26:32,229 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:26:32,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:26:32,229 INFO L82 PathProgramCache]: Analyzing trace with hash -1183022512, now seen corresponding path program 1 times [2020-04-18 11:26:32,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:26:32,230 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [538766751] [2020-04-18 11:26:32,230 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:26:32,231 INFO L259 McrAutomatonBuilder]: Finished intersection with 30 states and 47 transitions. [2020-04-18 11:26:32,232 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-04-18 11:26:32,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 11:26:32,232 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:26:32,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:26:32,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1183022512, now seen corresponding path program 2 times [2020-04-18 11:26:32,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:26:32,233 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166621132] [2020-04-18 11:26:32,233 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:26:32,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:26:32,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:26:32,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166621132] [2020-04-18 11:26:32,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:26:32,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:26:32,330 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:26:32,331 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:26:32,333 INFO L259 McrAutomatonBuilder]: Finished intersection with 24 states and 35 transitions. [2020-04-18 11:26:32,333 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:26:32,385 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:26:32,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:26:32,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-18 11:26:32,386 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 6 states. [2020-04-18 11:26:32,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:26:32,413 INFO L93 Difference]: Finished difference Result 30 states and 47 transitions. [2020-04-18 11:26:32,413 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 47 transitions. [2020-04-18 11:26:32,413 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:26:32,414 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [538766751] [2020-04-18 11:26:32,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:26:32,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:26:32,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [538766751] [2020-04-18 11:26:32,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 11:26:32,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:26:32,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:26:32,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-04-18 11:26:32,415 INFO L87 Difference]: Start difference. First operand 178 states and 434 transitions. Second operand 6 states. [2020-04-18 11:26:32,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:26:32,491 INFO L93 Difference]: Finished difference Result 163 states and 368 transitions. [2020-04-18 11:26:32,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 11:26:32,492 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-04-18 11:26:32,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:26:32,493 INFO L225 Difference]: With dead ends: 163 [2020-04-18 11:26:32,493 INFO L226 Difference]: Without dead ends: 126 [2020-04-18 11:26:32,494 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-04-18 11:26:32,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-04-18 11:26:32,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2020-04-18 11:26:32,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-04-18 11:26:32,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 278 transitions. [2020-04-18 11:26:32,507 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 278 transitions. Word has length 11 [2020-04-18 11:26:32,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:26:32,508 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 278 transitions. [2020-04-18 11:26:32,508 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 11:26:32,508 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 278 transitions. [2020-04-18 11:26:32,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 11:26:32,509 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:26:32,509 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:26:32,511 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:26:32,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:26:32,511 INFO L82 PathProgramCache]: Analyzing trace with hash -1548024821, now seen corresponding path program 1 times [2020-04-18 11:26:32,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:26:32,512 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [851680583] [2020-04-18 11:26:32,512 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:26:32,514 INFO L259 McrAutomatonBuilder]: Finished intersection with 90 states and 200 transitions. [2020-04-18 11:26:32,515 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states. [2020-04-18 11:26:32,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 11:26:32,516 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:26:32,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:26:32,517 INFO L82 PathProgramCache]: Analyzing trace with hash -1548024821, now seen corresponding path program 2 times [2020-04-18 11:26:32,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:26:32,517 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572855672] [2020-04-18 11:26:32,517 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:26:32,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:26:32,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:26:32,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572855672] [2020-04-18 11:26:32,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:26:32,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:26:32,604 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:26:32,605 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:26:32,610 INFO L259 McrAutomatonBuilder]: Finished intersection with 39 states and 66 transitions. [2020-04-18 11:26:32,610 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:26:32,652 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:26:32,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:26:32,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:26:32,653 INFO L87 Difference]: Start difference. First operand 90 states. Second operand 7 states. [2020-04-18 11:26:32,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:26:32,731 INFO L93 Difference]: Finished difference Result 90 states and 200 transitions. [2020-04-18 11:26:32,731 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 200 transitions. [2020-04-18 11:26:32,732 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:26:32,733 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [851680583] [2020-04-18 11:26:32,733 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:26:32,733 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 11:26:32,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [851680583] [2020-04-18 11:26:32,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 11:26:32,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:26:32,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:26:32,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-04-18 11:26:32,739 INFO L87 Difference]: Start difference. First operand 126 states and 278 transitions. Second operand 7 states. [2020-04-18 11:26:32,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:26:32,871 INFO L93 Difference]: Finished difference Result 118 states and 260 transitions. [2020-04-18 11:26:32,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 11:26:32,872 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-04-18 11:26:32,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:26:32,873 INFO L225 Difference]: With dead ends: 118 [2020-04-18 11:26:32,873 INFO L226 Difference]: Without dead ends: 108 [2020-04-18 11:26:32,874 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-04-18 11:26:32,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-04-18 11:26:32,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-04-18 11:26:32,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-04-18 11:26:32,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 242 transitions. [2020-04-18 11:26:32,881 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 242 transitions. Word has length 14 [2020-04-18 11:26:32,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:26:32,881 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 242 transitions. [2020-04-18 11:26:32,881 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 11:26:32,882 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 242 transitions. [2020-04-18 11:26:32,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:26:32,883 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:26:32,883 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:26:32,883 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:26:32,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:26:32,884 INFO L82 PathProgramCache]: Analyzing trace with hash 2137678742, now seen corresponding path program 1 times [2020-04-18 11:26:32,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:26:32,885 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1399857321] [2020-04-18 11:26:32,886 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:26:32,895 INFO L259 McrAutomatonBuilder]: Finished intersection with 234 states and 656 transitions. [2020-04-18 11:26:32,898 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states. [2020-04-18 11:26:32,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:26:32,900 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:26:32,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:26:32,900 INFO L82 PathProgramCache]: Analyzing trace with hash -2143403264, now seen corresponding path program 2 times [2020-04-18 11:26:32,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:26:32,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998182535] [2020-04-18 11:26:32,901 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:26:32,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:26:33,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:26:33,028 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998182535] [2020-04-18 11:26:33,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:26:33,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 11:26:33,029 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:26:33,030 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:26:33,035 INFO L259 McrAutomatonBuilder]: Finished intersection with 46 states and 77 transitions. [2020-04-18 11:26:33,035 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:26:33,075 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:26:33,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:26:33,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:26:33,076 INFO L87 Difference]: Start difference. First operand 234 states. Second operand 7 states. [2020-04-18 11:26:33,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:26:33,218 INFO L93 Difference]: Finished difference Result 236 states and 657 transitions. [2020-04-18 11:26:33,219 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 657 transitions. [2020-04-18 11:26:33,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:26:33,220 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:26:33,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:26:33,220 INFO L82 PathProgramCache]: Analyzing trace with hash 2137678742, now seen corresponding path program 3 times [2020-04-18 11:26:33,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:26:33,221 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829088147] [2020-04-18 11:26:33,221 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:26:33,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:26:33,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:26:33,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829088147] [2020-04-18 11:26:33,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:26:33,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:26:33,258 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:26:33,260 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:26:33,269 INFO L259 McrAutomatonBuilder]: Finished intersection with 46 states and 77 transitions. [2020-04-18 11:26:33,269 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:26:33,279 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:26:33,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:26:33,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-04-18 11:26:33,280 INFO L87 Difference]: Start difference. First operand 236 states and 657 transitions. Second operand 3 states. [2020-04-18 11:26:33,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:26:33,293 INFO L93 Difference]: Finished difference Result 342 states and 908 transitions. [2020-04-18 11:26:33,294 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 908 transitions. [2020-04-18 11:26:33,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:26:33,296 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:26:33,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:26:33,296 INFO L82 PathProgramCache]: Analyzing trace with hash 1164645812, now seen corresponding path program 4 times [2020-04-18 11:26:33,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:26:33,297 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134215953] [2020-04-18 11:26:33,297 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:26:33,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:26:33,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:26:33,348 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134215953] [2020-04-18 11:26:33,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:26:33,349 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:26:33,349 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:26:33,350 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:26:33,365 INFO L259 McrAutomatonBuilder]: Finished intersection with 57 states and 105 transitions. [2020-04-18 11:26:33,365 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:26:33,387 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:26:33,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:26:33,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-04-18 11:26:33,388 INFO L87 Difference]: Start difference. First operand 342 states and 908 transitions. Second operand 4 states. [2020-04-18 11:26:33,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:26:33,414 INFO L93 Difference]: Finished difference Result 526 states and 1312 transitions. [2020-04-18 11:26:33,414 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 1312 transitions. [2020-04-18 11:26:33,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:26:33,416 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:26:33,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:26:33,416 INFO L82 PathProgramCache]: Analyzing trace with hash 2098338434, now seen corresponding path program 5 times [2020-04-18 11:26:33,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:26:33,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787572332] [2020-04-18 11:26:33,417 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:26:33,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:26:33,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:26:33,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787572332] [2020-04-18 11:26:33,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:26:33,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:26:33,469 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:26:33,471 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:26:33,476 INFO L259 McrAutomatonBuilder]: Finished intersection with 41 states and 59 transitions. [2020-04-18 11:26:33,476 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:26:33,527 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:26:33,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:26:33,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2020-04-18 11:26:33,528 INFO L87 Difference]: Start difference. First operand 526 states and 1312 transitions. Second operand 4 states. [2020-04-18 11:26:33,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:26:33,549 INFO L93 Difference]: Finished difference Result 836 states and 1935 transitions. [2020-04-18 11:26:33,549 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1935 transitions. [2020-04-18 11:26:33,552 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:26:33,552 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1399857321] [2020-04-18 11:26:33,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:26:33,552 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:26:33,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1399857321] [2020-04-18 11:26:33,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-04-18 11:26:33,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:26:33,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 11:26:33,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2020-04-18 11:26:33,554 INFO L87 Difference]: Start difference. First operand 108 states and 242 transitions. Second operand 12 states. [2020-04-18 11:26:34,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:26:34,478 INFO L93 Difference]: Finished difference Result 233 states and 471 transitions. [2020-04-18 11:26:34,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-04-18 11:26:34,479 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 17 [2020-04-18 11:26:34,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:26:34,480 INFO L225 Difference]: With dead ends: 233 [2020-04-18 11:26:34,480 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 11:26:34,483 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1120 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=774, Invalid=2766, Unknown=0, NotChecked=0, Total=3540 [2020-04-18 11:26:34,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 11:26:34,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 11:26:34,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 11:26:34,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 11:26:34,484 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-04-18 11:26:34,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:26:34,484 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 11:26:34,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-04-18 11:26:34,484 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 11:26:34,485 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:26:34,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 11:26:34 BasicIcfg [2020-04-18 11:26:34,488 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 11:26:34,491 INFO L168 Benchmark]: Toolchain (without parser) took 6132.43 ms. Allocated memory was 138.4 MB in the beginning and 281.0 MB in the end (delta: 142.6 MB). Free memory was 100.1 MB in the beginning and 98.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 144.6 MB. Max. memory is 7.1 GB. [2020-04-18 11:26:34,492 INFO L168 Benchmark]: CDTParser took 0.43 ms. Allocated memory is still 138.4 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-04-18 11:26:34,493 INFO L168 Benchmark]: CACSL2BoogieTranslator took 711.06 ms. Allocated memory was 138.4 MB in the beginning and 203.9 MB in the end (delta: 65.5 MB). Free memory was 98.3 MB in the beginning and 160.3 MB in the end (delta: -62.0 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. [2020-04-18 11:26:34,494 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.10 ms. Allocated memory is still 203.9 MB. Free memory was 160.3 MB in the beginning and 158.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 11:26:34,495 INFO L168 Benchmark]: Boogie Preprocessor took 25.50 ms. Allocated memory is still 203.9 MB. Free memory was 158.3 MB in the beginning and 157.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 11:26:34,495 INFO L168 Benchmark]: RCFGBuilder took 444.10 ms. Allocated memory is still 203.9 MB. Free memory was 157.0 MB in the beginning and 134.7 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2020-04-18 11:26:34,496 INFO L168 Benchmark]: TraceAbstraction took 4877.30 ms. Allocated memory was 203.9 MB in the beginning and 281.0 MB in the end (delta: 77.1 MB). Free memory was 134.1 MB in the beginning and 98.1 MB in the end (delta: 36.0 MB). Peak memory consumption was 113.1 MB. Max. memory is 7.1 GB. [2020-04-18 11:26:34,500 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43 ms. Allocated memory is still 138.4 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 711.06 ms. Allocated memory was 138.4 MB in the beginning and 203.9 MB in the end (delta: 65.5 MB). Free memory was 98.3 MB in the beginning and 160.3 MB in the end (delta: -62.0 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 48.10 ms. Allocated memory is still 203.9 MB. Free memory was 160.3 MB in the beginning and 158.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.50 ms. Allocated memory is still 203.9 MB. Free memory was 158.3 MB in the beginning and 157.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 444.10 ms. Allocated memory is still 203.9 MB. Free memory was 157.0 MB in the beginning and 134.7 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4877.30 ms. Allocated memory was 203.9 MB in the beginning and 281.0 MB in the end (delta: 77.1 MB). Free memory was 134.1 MB in the beginning and 98.1 MB in the end (delta: 36.0 MB). Peak memory consumption was 113.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.7s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 685 VarBasedMoverChecksPositive, 30 VarBasedMoverChecksNegative, 10 SemBasedMoverChecksPositive, 32 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 2732 CheckedPairsTotal, 60 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, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.7s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 112 SDtfs, 195 SDslu, 341 SDs, 0 SdLazy, 395 SolverSat, 39 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 205 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1127 ImplicationChecksByTransitivity, 0.8s 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...