/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-NoLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe022_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 19:44:29,302 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 19:44:29,305 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 19:44:29,324 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 19:44:29,324 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 19:44:29,326 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 19:44:29,328 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 19:44:29,338 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 19:44:29,342 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 19:44:29,345 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 19:44:29,347 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 19:44:29,349 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 19:44:29,349 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 19:44:29,351 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 19:44:29,354 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 19:44:29,355 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 19:44:29,356 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 19:44:29,357 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 19:44:29,359 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 19:44:29,363 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 19:44:29,368 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 19:44:29,373 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 19:44:29,374 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 19:44:29,375 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 19:44:29,379 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 19:44:29,379 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 19:44:29,379 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 19:44:29,382 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 19:44:29,383 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 19:44:29,384 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 19:44:29,384 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 19:44:29,385 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 19:44:29,386 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 19:44:29,387 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 19:44:29,388 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 19:44:29,389 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 19:44:29,389 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 19:44:29,389 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 19:44:29,390 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 19:44:29,390 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 19:44:29,392 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 19:44:29,392 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-NoLbe-McrStrategy.epf [2020-04-18 19:44:29,431 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 19:44:29,431 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 19:44:29,432 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 19:44:29,433 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 19:44:29,433 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 19:44:29,433 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 19:44:29,433 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 19:44:29,434 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 19:44:29,434 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 19:44:29,434 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 19:44:29,438 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 19:44:29,438 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 19:44:29,439 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 19:44:29,439 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 19:44:29,439 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 19:44:29,439 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 19:44:29,439 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 19:44:29,440 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 19:44:29,440 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 19:44:29,440 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 19:44:29,440 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 19:44:29,440 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 19:44:29,441 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 19:44:29,441 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 19:44:29,441 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 19:44:29,444 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 19:44:29,444 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 19:44:29,444 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-04-18 19:44:29,444 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 19:44:29,445 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 19:44:29,445 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 19:44:29,731 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 19:44:29,755 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 19:44:29,758 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 19:44:29,760 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 19:44:29,761 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 19:44:29,763 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe022_tso.opt.i [2020-04-18 19:44:29,832 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/355b9b40f/2dda3235f9da459d9f5883e761eb5714/FLAG3360c796c [2020-04-18 19:44:30,430 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 19:44:30,431 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe022_tso.opt.i [2020-04-18 19:44:30,448 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/355b9b40f/2dda3235f9da459d9f5883e761eb5714/FLAG3360c796c [2020-04-18 19:44:30,719 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/355b9b40f/2dda3235f9da459d9f5883e761eb5714 [2020-04-18 19:44:30,728 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 19:44:30,744 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 19:44:30,745 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 19:44:30,746 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 19:44:30,749 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 19:44:30,750 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:44:30" (1/1) ... [2020-04-18 19:44:30,753 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73e5460c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:44:30, skipping insertion in model container [2020-04-18 19:44:30,753 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:44:30" (1/1) ... [2020-04-18 19:44:30,761 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 19:44:30,815 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 19:44:31,300 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 19:44:31,312 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 19:44:31,383 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 19:44:31,471 INFO L208 MainTranslator]: Completed translation [2020-04-18 19:44:31,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:44:31 WrapperNode [2020-04-18 19:44:31,472 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 19:44:31,472 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 19:44:31,472 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 19:44:31,472 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 19:44:31,480 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:44:31" (1/1) ... [2020-04-18 19:44:31,496 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:44:31" (1/1) ... [2020-04-18 19:44:31,519 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 19:44:31,520 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 19:44:31,520 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 19:44:31,520 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 19:44:31,530 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:44:31" (1/1) ... [2020-04-18 19:44:31,530 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:44:31" (1/1) ... [2020-04-18 19:44:31,533 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:44:31" (1/1) ... [2020-04-18 19:44:31,533 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:44:31" (1/1) ... [2020-04-18 19:44:31,539 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:44:31" (1/1) ... [2020-04-18 19:44:31,542 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:44:31" (1/1) ... [2020-04-18 19:44:31,544 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:44:31" (1/1) ... [2020-04-18 19:44:31,546 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 19:44:31,547 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 19:44:31,547 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 19:44:31,547 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 19:44:31,548 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:44:31" (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 19:44:31,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 19:44:31,624 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 19:44:31,624 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 19:44:31,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 19:44:31,624 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 19:44:31,625 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 19:44:31,625 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 19:44:31,625 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 19:44:31,625 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 19:44:31,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 19:44:31,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 19:44:31,627 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 19:44:31,975 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 19:44:31,976 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 19:44:31,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:44:31 BoogieIcfgContainer [2020-04-18 19:44:31,980 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 19:44:31,981 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 19:44:31,982 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 19:44:31,985 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 19:44:31,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 07:44:30" (1/3) ... [2020-04-18 19:44:31,986 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38911dcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:44:31, skipping insertion in model container [2020-04-18 19:44:31,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:44:31" (2/3) ... [2020-04-18 19:44:31,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38911dcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:44:31, skipping insertion in model container [2020-04-18 19:44:31,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:44:31" (3/3) ... [2020-04-18 19:44:31,989 INFO L109 eAbstractionObserver]: Analyzing ICFG safe022_tso.opt.i [2020-04-18 19:44:32,000 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 19:44:32,000 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 19:44:32,007 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 19:44:32,008 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 19:44:32,033 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:44:32,033 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:44:32,033 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:44:32,034 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:44:32,034 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:44:32,034 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:44:32,035 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:44:32,035 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:44:32,035 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:44:32,035 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:44:32,036 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:44:32,036 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:44:32,040 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:44:32,040 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:44:32,041 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:44:32,041 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:44:32,046 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:44:32,047 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:44:32,047 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:44:32,047 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:44:32,060 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-04-18 19:44:32,077 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 19:44:32,077 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 19:44:32,078 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 19:44:32,078 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 19:44:32,078 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 19:44:32,078 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 19:44:32,078 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 19:44:32,079 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 19:44:32,091 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 61 places, 56 transitions, 122 flow [2020-04-18 19:44:32,163 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1121 states. [2020-04-18 19:44:32,166 INFO L276 IsEmpty]: Start isEmpty. Operand 1121 states. [2020-04-18 19:44:32,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-04-18 19:44:32,186 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:44:32,187 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:44:32,187 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:44:32,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:44:32,194 INFO L82 PathProgramCache]: Analyzing trace with hash 441942769, now seen corresponding path program 1 times [2020-04-18 19:44:32,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:44:32,202 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [330081037] [2020-04-18 19:44:32,216 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:44:32,225 INFO L259 McrAutomatonBuilder]: Finished intersection with 32 states and 31 transitions. [2020-04-18 19:44:32,227 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-04-18 19:44:32,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-04-18 19:44:32,229 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:44:32,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:44:32,229 INFO L82 PathProgramCache]: Analyzing trace with hash 441942769, now seen corresponding path program 2 times [2020-04-18 19:44:32,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:44:32,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285907208] [2020-04-18 19:44:32,234 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:44:32,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:44:32,658 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 19:44:32,659 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285907208] [2020-04-18 19:44:32,660 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:44:32,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:44:32,662 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:44:32,682 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:44:32,693 INFO L259 McrAutomatonBuilder]: Finished intersection with 32 states and 31 transitions. [2020-04-18 19:44:32,693 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:44:32,748 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:44:32,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:44:32,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:44:32,755 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 7 states. [2020-04-18 19:44:32,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:44:32,834 INFO L93 Difference]: Finished difference Result 32 states and 31 transitions. [2020-04-18 19:44:32,834 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 31 transitions. [2020-04-18 19:44:32,835 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:44:32,836 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [330081037] [2020-04-18 19:44:32,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:44:32,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:44:32,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [330081037] [2020-04-18 19:44:32,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 19:44:32,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:44:32,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:44:32,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-04-18 19:44:32,844 INFO L87 Difference]: Start difference. First operand 1121 states. Second operand 7 states. [2020-04-18 19:44:33,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:44:33,001 INFO L93 Difference]: Finished difference Result 1513 states and 3945 transitions. [2020-04-18 19:44:33,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 19:44:33,003 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 31 [2020-04-18 19:44:33,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:44:33,021 INFO L225 Difference]: With dead ends: 1513 [2020-04-18 19:44:33,022 INFO L226 Difference]: Without dead ends: 596 [2020-04-18 19:44:33,024 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-04-18 19:44:33,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2020-04-18 19:44:33,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 596. [2020-04-18 19:44:33,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 596 states. [2020-04-18 19:44:33,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 1507 transitions. [2020-04-18 19:44:33,108 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 1507 transitions. Word has length 31 [2020-04-18 19:44:33,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:44:33,109 INFO L479 AbstractCegarLoop]: Abstraction has 596 states and 1507 transitions. [2020-04-18 19:44:33,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 19:44:33,109 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 1507 transitions. [2020-04-18 19:44:33,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-04-18 19:44:33,112 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:44:33,112 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:44:33,112 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:44:33,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:44:33,113 INFO L82 PathProgramCache]: Analyzing trace with hash -530371982, now seen corresponding path program 1 times [2020-04-18 19:44:33,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:44:33,114 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [830514679] [2020-04-18 19:44:33,115 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:44:33,116 INFO L259 McrAutomatonBuilder]: Finished intersection with 58 states and 81 transitions. [2020-04-18 19:44:33,116 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states. [2020-04-18 19:44:33,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-04-18 19:44:33,117 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:44:33,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:44:33,118 INFO L82 PathProgramCache]: Analyzing trace with hash -494757262, now seen corresponding path program 2 times [2020-04-18 19:44:33,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:44:33,119 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163911149] [2020-04-18 19:44:33,119 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:44:33,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:44:33,320 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 19:44:33,321 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163911149] [2020-04-18 19:44:33,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:44:33,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:44:33,322 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:44:33,325 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:44:33,330 INFO L259 McrAutomatonBuilder]: Finished intersection with 51 states and 67 transitions. [2020-04-18 19:44:33,330 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:44:33,378 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:44:33,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:44:33,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:44:33,380 INFO L87 Difference]: Start difference. First operand 58 states. Second operand 7 states. [2020-04-18 19:44:33,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:44:33,543 INFO L93 Difference]: Finished difference Result 64 states and 86 transitions. [2020-04-18 19:44:33,543 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 86 transitions. [2020-04-18 19:44:33,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-04-18 19:44:33,544 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:44:33,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:44:33,545 INFO L82 PathProgramCache]: Analyzing trace with hash -530371982, now seen corresponding path program 3 times [2020-04-18 19:44:33,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:44:33,546 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508365279] [2020-04-18 19:44:33,546 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:44:33,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:44:33,731 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 19:44:33,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508365279] [2020-04-18 19:44:33,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:44:33,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:44:33,732 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:44:33,736 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:44:33,741 INFO L259 McrAutomatonBuilder]: Finished intersection with 46 states and 57 transitions. [2020-04-18 19:44:33,741 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:44:33,855 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 19:44:33,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 19:44:33,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2020-04-18 19:44:33,857 INFO L87 Difference]: Start difference. First operand 64 states and 86 transitions. Second operand 11 states. [2020-04-18 19:44:34,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:44:34,092 INFO L93 Difference]: Finished difference Result 64 states and 86 transitions. [2020-04-18 19:44:34,092 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 86 transitions. [2020-04-18 19:44:34,092 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:44:34,093 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [830514679] [2020-04-18 19:44:34,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:44:34,094 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:44:34,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [830514679] [2020-04-18 19:44:34,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-04-18 19:44:34,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:44:34,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 19:44:34,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2020-04-18 19:44:34,097 INFO L87 Difference]: Start difference. First operand 596 states and 1507 transitions. Second operand 12 states. [2020-04-18 19:44:34,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:44:34,270 INFO L93 Difference]: Finished difference Result 786 states and 1964 transitions. [2020-04-18 19:44:34,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-04-18 19:44:34,270 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 33 [2020-04-18 19:44:34,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:44:34,276 INFO L225 Difference]: With dead ends: 786 [2020-04-18 19:44:34,276 INFO L226 Difference]: Without dead ends: 401 [2020-04-18 19:44:34,278 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=202, Invalid=448, Unknown=0, NotChecked=0, Total=650 [2020-04-18 19:44:34,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2020-04-18 19:44:34,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 401. [2020-04-18 19:44:34,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 401 states. [2020-04-18 19:44:34,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 955 transitions. [2020-04-18 19:44:34,316 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 955 transitions. Word has length 33 [2020-04-18 19:44:34,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:44:34,317 INFO L479 AbstractCegarLoop]: Abstraction has 401 states and 955 transitions. [2020-04-18 19:44:34,317 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-04-18 19:44:34,317 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 955 transitions. [2020-04-18 19:44:34,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-04-18 19:44:34,322 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:44:34,322 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:44:34,322 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:44:34,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:44:34,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1552303459, now seen corresponding path program 1 times [2020-04-18 19:44:34,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:44:34,323 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2123888095] [2020-04-18 19:44:34,324 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:44:34,327 INFO L259 McrAutomatonBuilder]: Finished intersection with 187 states and 408 transitions. [2020-04-18 19:44:34,329 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states. [2020-04-18 19:44:34,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-04-18 19:44:34,330 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:44:34,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:44:34,331 INFO L82 PathProgramCache]: Analyzing trace with hash -2123736695, now seen corresponding path program 2 times [2020-04-18 19:44:34,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:44:34,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461770303] [2020-04-18 19:44:34,332 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:44:34,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:44:34,449 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 19:44:34,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461770303] [2020-04-18 19:44:34,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:44:34,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:44:34,451 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:44:34,453 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:44:34,472 INFO L259 McrAutomatonBuilder]: Finished intersection with 141 states and 280 transitions. [2020-04-18 19:44:34,472 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:44:34,521 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 8 times. [2020-04-18 19:44:34,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:44:34,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:44:34,522 INFO L87 Difference]: Start difference. First operand 187 states. Second operand 7 states. [2020-04-18 19:44:34,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:44:34,635 INFO L93 Difference]: Finished difference Result 211 states and 446 transitions. [2020-04-18 19:44:34,635 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 446 transitions. [2020-04-18 19:44:34,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-04-18 19:44:34,636 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:44:34,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:44:34,637 INFO L82 PathProgramCache]: Analyzing trace with hash 1641479599, now seen corresponding path program 3 times [2020-04-18 19:44:34,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:44:34,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928880856] [2020-04-18 19:44:34,638 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:44:34,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:44:34,778 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 19:44:34,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928880856] [2020-04-18 19:44:34,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:44:34,780 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:44:34,781 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:44:34,783 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:44:34,791 INFO L259 McrAutomatonBuilder]: Finished intersection with 100 states and 180 transitions. [2020-04-18 19:44:34,792 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:44:34,889 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 8 times. [2020-04-18 19:44:34,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:44:34,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-04-18 19:44:34,890 INFO L87 Difference]: Start difference. First operand 211 states and 446 transitions. Second operand 6 states. [2020-04-18 19:44:34,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:44:34,954 INFO L93 Difference]: Finished difference Result 211 states and 446 transitions. [2020-04-18 19:44:34,955 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 446 transitions. [2020-04-18 19:44:34,955 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:44:34,956 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2123888095] [2020-04-18 19:44:34,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:44:34,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 19:44:34,962 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2123888095] [2020-04-18 19:44:34,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-04-18 19:44:34,963 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:44:34,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 19:44:34,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2020-04-18 19:44:34,964 INFO L87 Difference]: Start difference. First operand 401 states and 955 transitions. Second operand 11 states. [2020-04-18 19:44:35,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:44:35,216 INFO L93 Difference]: Finished difference Result 475 states and 1112 transitions. [2020-04-18 19:44:35,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-04-18 19:44:35,216 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 36 [2020-04-18 19:44:35,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:44:35,219 INFO L225 Difference]: With dead ends: 475 [2020-04-18 19:44:35,219 INFO L226 Difference]: Without dead ends: 339 [2020-04-18 19:44:35,221 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=156, Invalid=600, Unknown=0, NotChecked=0, Total=756 [2020-04-18 19:44:35,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2020-04-18 19:44:35,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 339. [2020-04-18 19:44:35,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2020-04-18 19:44:35,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 784 transitions. [2020-04-18 19:44:35,232 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 784 transitions. Word has length 36 [2020-04-18 19:44:35,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:44:35,232 INFO L479 AbstractCegarLoop]: Abstraction has 339 states and 784 transitions. [2020-04-18 19:44:35,232 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-04-18 19:44:35,233 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 784 transitions. [2020-04-18 19:44:35,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-04-18 19:44:35,234 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:44:35,234 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:44:35,234 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:44:35,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:44:35,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1953325440, now seen corresponding path program 1 times [2020-04-18 19:44:35,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:44:35,235 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1234990551] [2020-04-18 19:44:35,236 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:44:35,239 INFO L259 McrAutomatonBuilder]: Finished intersection with 230 states and 517 transitions. [2020-04-18 19:44:35,241 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states. [2020-04-18 19:44:35,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-04-18 19:44:35,243 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:44:35,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:44:35,243 INFO L82 PathProgramCache]: Analyzing trace with hash -1411330892, now seen corresponding path program 2 times [2020-04-18 19:44:35,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:44:35,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060002447] [2020-04-18 19:44:35,245 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:44:35,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:44:35,403 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 19:44:35,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060002447] [2020-04-18 19:44:35,404 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:44:35,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:44:35,404 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:44:35,407 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:44:35,421 INFO L259 McrAutomatonBuilder]: Finished intersection with 169 states and 350 transitions. [2020-04-18 19:44:35,421 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:44:35,461 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 8 times. [2020-04-18 19:44:35,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:44:35,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:44:35,462 INFO L87 Difference]: Start difference. First operand 230 states. Second operand 7 states. [2020-04-18 19:44:35,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:44:35,563 INFO L93 Difference]: Finished difference Result 260 states and 566 transitions. [2020-04-18 19:44:35,563 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 566 transitions. [2020-04-18 19:44:35,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-04-18 19:44:35,564 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:44:35,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:44:35,565 INFO L82 PathProgramCache]: Analyzing trace with hash -1886892876, now seen corresponding path program 3 times [2020-04-18 19:44:35,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:44:35,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281736358] [2020-04-18 19:44:35,566 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:44:35,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:44:35,726 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 19:44:35,727 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281736358] [2020-04-18 19:44:35,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:44:35,727 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:44:35,744 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:44:35,745 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:44:35,755 INFO L259 McrAutomatonBuilder]: Finished intersection with 121 states and 229 transitions. [2020-04-18 19:44:35,756 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:44:35,851 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 8 times. [2020-04-18 19:44:35,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:44:35,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-04-18 19:44:35,852 INFO L87 Difference]: Start difference. First operand 260 states and 566 transitions. Second operand 6 states. [2020-04-18 19:44:35,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:44:35,998 INFO L93 Difference]: Finished difference Result 260 states and 566 transitions. [2020-04-18 19:44:35,998 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 566 transitions. [2020-04-18 19:44:36,000 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:44:36,000 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1234990551] [2020-04-18 19:44:36,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:44:36,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 19:44:36,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1234990551] [2020-04-18 19:44:36,001 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-04-18 19:44:36,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:44:36,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 19:44:36,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2020-04-18 19:44:36,003 INFO L87 Difference]: Start difference. First operand 339 states and 784 transitions. Second operand 11 states. [2020-04-18 19:44:36,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:44:36,263 INFO L93 Difference]: Finished difference Result 351 states and 771 transitions. [2020-04-18 19:44:36,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-04-18 19:44:36,264 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 37 [2020-04-18 19:44:36,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:44:36,266 INFO L225 Difference]: With dead ends: 351 [2020-04-18 19:44:36,267 INFO L226 Difference]: Without dead ends: 216 [2020-04-18 19:44:36,268 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=130, Invalid=572, Unknown=0, NotChecked=0, Total=702 [2020-04-18 19:44:36,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-04-18 19:44:36,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2020-04-18 19:44:36,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-04-18 19:44:36,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 457 transitions. [2020-04-18 19:44:36,276 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 457 transitions. Word has length 37 [2020-04-18 19:44:36,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:44:36,277 INFO L479 AbstractCegarLoop]: Abstraction has 216 states and 457 transitions. [2020-04-18 19:44:36,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-04-18 19:44:36,277 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 457 transitions. [2020-04-18 19:44:36,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-04-18 19:44:36,278 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:44:36,278 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:44:36,278 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:44:36,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:44:36,279 INFO L82 PathProgramCache]: Analyzing trace with hash -447060607, now seen corresponding path program 1 times [2020-04-18 19:44:36,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:44:36,280 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [517681927] [2020-04-18 19:44:36,281 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:44:36,287 INFO L259 McrAutomatonBuilder]: Finished intersection with 360 states and 871 transitions. [2020-04-18 19:44:36,290 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states. [2020-04-18 19:44:36,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-04-18 19:44:36,293 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:44:36,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:44:36,293 INFO L82 PathProgramCache]: Analyzing trace with hash 920682421, now seen corresponding path program 2 times [2020-04-18 19:44:36,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:44:36,295 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085312782] [2020-04-18 19:44:36,295 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:44:36,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:44:36,457 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 19:44:36,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085312782] [2020-04-18 19:44:36,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:44:36,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:44:36,458 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:44:36,462 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:44:36,480 INFO L259 McrAutomatonBuilder]: Finished intersection with 187 states and 389 transitions. [2020-04-18 19:44:36,480 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:44:36,522 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 8 times. [2020-04-18 19:44:36,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:44:36,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:44:36,523 INFO L87 Difference]: Start difference. First operand 360 states. Second operand 7 states. [2020-04-18 19:44:36,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:44:36,629 INFO L93 Difference]: Finished difference Result 450 states and 1078 transitions. [2020-04-18 19:44:36,629 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 1078 transitions. [2020-04-18 19:44:36,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-04-18 19:44:36,632 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:44:36,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:44:36,632 INFO L82 PathProgramCache]: Analyzing trace with hash 102195125, now seen corresponding path program 3 times [2020-04-18 19:44:36,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:44:36,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541537118] [2020-04-18 19:44:36,633 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:44:36,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:44:36,740 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 19:44:36,740 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541537118] [2020-04-18 19:44:36,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:44:36,741 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:44:36,741 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:44:36,745 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:44:36,763 INFO L259 McrAutomatonBuilder]: Finished intersection with 144 states and 277 transitions. [2020-04-18 19:44:36,763 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:44:36,918 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 17 times. [2020-04-18 19:44:36,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 19:44:36,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2020-04-18 19:44:36,919 INFO L87 Difference]: Start difference. First operand 450 states and 1078 transitions. Second operand 11 states. [2020-04-18 19:44:37,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:44:37,069 INFO L93 Difference]: Finished difference Result 600 states and 1385 transitions. [2020-04-18 19:44:37,069 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 1385 transitions. [2020-04-18 19:44:37,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-04-18 19:44:37,071 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:44:37,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:44:37,072 INFO L82 PathProgramCache]: Analyzing trace with hash 1014587795, now seen corresponding path program 4 times [2020-04-18 19:44:37,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:44:37,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72928197] [2020-04-18 19:44:37,073 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:44:37,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:44:37,172 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 19:44:37,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72928197] [2020-04-18 19:44:37,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:44:37,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:44:37,173 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:44:37,176 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:44:37,188 INFO L259 McrAutomatonBuilder]: Finished intersection with 139 states and 268 transitions. [2020-04-18 19:44:37,189 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:44:37,279 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 8 times. [2020-04-18 19:44:37,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:44:37,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=567, Unknown=0, NotChecked=0, Total=702 [2020-04-18 19:44:37,281 INFO L87 Difference]: Start difference. First operand 600 states and 1385 transitions. Second operand 6 states. [2020-04-18 19:44:37,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:44:37,478 INFO L93 Difference]: Finished difference Result 632 states and 1415 transitions. [2020-04-18 19:44:37,479 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 1415 transitions. [2020-04-18 19:44:37,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-04-18 19:44:37,481 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 19:44:37,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:44:37,481 INFO L82 PathProgramCache]: Analyzing trace with hash 1312333823, now seen corresponding path program 5 times [2020-04-18 19:44:37,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:44:37,482 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972670826] [2020-04-18 19:44:37,482 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:44:37,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:44:37,555 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 19:44:37,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972670826] [2020-04-18 19:44:37,556 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:44:37,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:44:37,556 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:44:37,559 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:44:37,571 INFO L259 McrAutomatonBuilder]: Finished intersection with 139 states and 255 transitions. [2020-04-18 19:44:37,572 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:44:37,608 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 23 times. [2020-04-18 19:44:37,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:44:37,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=930, Unknown=0, NotChecked=0, Total=1122 [2020-04-18 19:44:37,609 INFO L87 Difference]: Start difference. First operand 632 states and 1415 transitions. Second operand 7 states. [2020-04-18 19:44:37,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:44:37,737 INFO L93 Difference]: Finished difference Result 774 states and 1689 transitions. [2020-04-18 19:44:37,737 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states and 1689 transitions. [2020-04-18 19:44:37,739 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:44:37,740 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [517681927] [2020-04-18 19:44:37,740 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:44:37,741 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:44:37,741 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [517681927] [2020-04-18 19:44:37,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-04-18 19:44:37,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:44:37,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-04-18 19:44:37,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=1173, Unknown=0, NotChecked=0, Total=1406 [2020-04-18 19:44:37,742 INFO L87 Difference]: Start difference. First operand 216 states and 457 transitions. Second operand 18 states. [2020-04-18 19:44:38,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:44:38,086 INFO L93 Difference]: Finished difference Result 198 states and 415 transitions. [2020-04-18 19:44:38,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-04-18 19:44:38,086 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 39 [2020-04-18 19:44:38,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:44:38,087 INFO L225 Difference]: With dead ends: 198 [2020-04-18 19:44:38,087 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 19:44:38,088 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 588 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=355, Invalid=1901, Unknown=0, NotChecked=0, Total=2256 [2020-04-18 19:44:38,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 19:44:38,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 19:44:38,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 19:44:38,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 19:44:38,089 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2020-04-18 19:44:38,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:44:38,089 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 19:44:38,089 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-04-18 19:44:38,089 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 19:44:38,090 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:44:38,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 07:44:38 BasicIcfg [2020-04-18 19:44:38,095 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 19:44:38,097 INFO L168 Benchmark]: Toolchain (without parser) took 7367.60 ms. Allocated memory was 146.3 MB in the beginning and 318.8 MB in the end (delta: 172.5 MB). Free memory was 102.4 MB in the beginning and 255.4 MB in the end (delta: -153.0 MB). Peak memory consumption was 19.4 MB. Max. memory is 7.1 GB. [2020-04-18 19:44:38,098 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 146.3 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-18 19:44:38,099 INFO L168 Benchmark]: CACSL2BoogieTranslator took 726.49 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 100.4 MB in the beginning and 159.2 MB in the end (delta: -58.8 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. [2020-04-18 19:44:38,099 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.52 ms. Allocated memory is still 203.9 MB. Free memory was 159.2 MB in the beginning and 157.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 19:44:38,100 INFO L168 Benchmark]: Boogie Preprocessor took 26.68 ms. Allocated memory is still 203.9 MB. Free memory was 157.2 MB in the beginning and 155.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-18 19:44:38,101 INFO L168 Benchmark]: RCFGBuilder took 433.50 ms. Allocated memory is still 203.9 MB. Free memory was 155.8 MB in the beginning and 135.5 MB in the end (delta: 20.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2020-04-18 19:44:38,102 INFO L168 Benchmark]: TraceAbstraction took 6113.48 ms. Allocated memory was 203.9 MB in the beginning and 318.8 MB in the end (delta: 114.8 MB). Free memory was 135.5 MB in the beginning and 255.4 MB in the end (delta: -120.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 19:44:38,105 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 146.3 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 726.49 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 100.4 MB in the beginning and 159.2 MB in the end (delta: -58.8 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 47.52 ms. Allocated memory is still 203.9 MB. Free memory was 159.2 MB in the beginning and 157.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.68 ms. Allocated memory is still 203.9 MB. Free memory was 157.2 MB in the beginning and 155.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 433.50 ms. Allocated memory is still 203.9 MB. Free memory was 155.8 MB in the beginning and 135.5 MB in the end (delta: 20.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6113.48 ms. Allocated memory was 203.9 MB in the beginning and 318.8 MB in the end (delta: 114.8 MB). Free memory was 135.5 MB in the beginning and 255.4 MB in the end (delta: -120.0 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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 3 procedures, 55 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.0s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 318 SDtfs, 755 SDslu, 1706 SDs, 0 SdLazy, 386 SolverSat, 47 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 595 GetRequests, 464 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 987 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1121occurred 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...