/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe014_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-507b705 [2020-09-11 23:41:38,966 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-11 23:41:38,970 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-11 23:41:38,996 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-11 23:41:38,996 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-11 23:41:38,997 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-11 23:41:38,999 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-11 23:41:39,001 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-11 23:41:39,003 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-11 23:41:39,004 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-11 23:41:39,005 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-11 23:41:39,006 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-11 23:41:39,007 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-11 23:41:39,008 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-11 23:41:39,009 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-11 23:41:39,010 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-11 23:41:39,011 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-11 23:41:39,013 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-11 23:41:39,014 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-11 23:41:39,017 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-11 23:41:39,018 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-11 23:41:39,019 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-11 23:41:39,021 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-11 23:41:39,022 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-11 23:41:39,024 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-11 23:41:39,028 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-11 23:41:39,029 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-11 23:41:39,030 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-11 23:41:39,031 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-11 23:41:39,032 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-11 23:41:39,032 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-11 23:41:39,033 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-11 23:41:39,033 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-11 23:41:39,034 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-11 23:41:39,035 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-11 23:41:39,036 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-11 23:41:39,037 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-09-11 23:41:39,063 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-11 23:41:39,063 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-11 23:41:39,064 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-11 23:41:39,065 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-11 23:41:39,065 INFO L138 SettingsManager]: * Use SBE=true [2020-09-11 23:41:39,065 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-11 23:41:39,065 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-11 23:41:39,065 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-11 23:41:39,066 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-11 23:41:39,066 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-11 23:41:39,066 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-11 23:41:39,066 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-11 23:41:39,067 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-11 23:41:39,067 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-11 23:41:39,067 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-11 23:41:39,067 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-11 23:41:39,067 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-11 23:41:39,068 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-11 23:41:39,068 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-11 23:41:39,068 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-11 23:41:39,068 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-11 23:41:39,068 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-11 23:41:39,069 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-11 23:41:39,069 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-11 23:41:39,069 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-11 23:41:39,069 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-11 23:41:39,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-11 23:41:39,070 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-11 23:41:39,070 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-11 23:41:39,070 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-11 23:41:39,070 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-11 23:41:39,528 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-11 23:41:39,557 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-11 23:41:39,562 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-11 23:41:39,563 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-11 23:41:39,564 INFO L275 PluginConnector]: CDTParser initialized [2020-09-11 23:41:39,567 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe014_pso.opt.i [2020-09-11 23:41:39,658 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ec3740da0/d756cde9eee045198a1331b087502631/FLAG399492426 [2020-09-11 23:41:40,273 INFO L306 CDTParser]: Found 1 translation units. [2020-09-11 23:41:40,274 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe014_pso.opt.i [2020-09-11 23:41:40,292 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ec3740da0/d756cde9eee045198a1331b087502631/FLAG399492426 [2020-09-11 23:41:40,528 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ec3740da0/d756cde9eee045198a1331b087502631 [2020-09-11 23:41:40,547 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-11 23:41:40,554 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-11 23:41:40,557 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-11 23:41:40,558 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-11 23:41:40,562 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-11 23:41:40,564 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 11:41:40" (1/1) ... [2020-09-11 23:41:40,569 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14df979a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:41:40, skipping insertion in model container [2020-09-11 23:41:40,569 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 11:41:40" (1/1) ... [2020-09-11 23:41:40,581 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-11 23:41:40,659 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-11 23:41:41,210 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 23:41:41,234 INFO L203 MainTranslator]: Completed pre-run [2020-09-11 23:41:41,299 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 23:41:41,379 INFO L208 MainTranslator]: Completed translation [2020-09-11 23:41:41,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:41:41 WrapperNode [2020-09-11 23:41:41,379 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-11 23:41:41,380 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-11 23:41:41,380 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-11 23:41:41,381 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-11 23:41:41,391 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:41:41" (1/1) ... [2020-09-11 23:41:41,409 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:41:41" (1/1) ... [2020-09-11 23:41:41,436 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-11 23:41:41,436 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-11 23:41:41,436 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-11 23:41:41,436 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-11 23:41:41,448 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:41:41" (1/1) ... [2020-09-11 23:41:41,449 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:41:41" (1/1) ... [2020-09-11 23:41:41,452 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:41:41" (1/1) ... [2020-09-11 23:41:41,452 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:41:41" (1/1) ... [2020-09-11 23:41:41,459 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:41:41" (1/1) ... [2020-09-11 23:41:41,462 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:41:41" (1/1) ... [2020-09-11 23:41:41,464 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:41:41" (1/1) ... [2020-09-11 23:41:41,468 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-11 23:41:41,469 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-11 23:41:41,469 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-11 23:41:41,469 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-11 23:41:41,470 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:41:41" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-11 23:41:41,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-11 23:41:41,561 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-11 23:41:41,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-11 23:41:41,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-11 23:41:41,561 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-11 23:41:41,562 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-11 23:41:41,562 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-11 23:41:41,562 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-11 23:41:41,562 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-11 23:41:41,562 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-11 23:41:41,563 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-11 23:41:41,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-11 23:41:41,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-11 23:41:41,565 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-11 23:41:41,980 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-11 23:41:41,980 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-11 23:41:41,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 11:41:41 BoogieIcfgContainer [2020-09-11 23:41:41,986 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-11 23:41:41,987 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-11 23:41:41,987 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-11 23:41:41,991 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-11 23:41:41,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 11:41:40" (1/3) ... [2020-09-11 23:41:41,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66eb7c76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 11:41:41, skipping insertion in model container [2020-09-11 23:41:41,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:41:41" (2/3) ... [2020-09-11 23:41:41,993 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66eb7c76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 11:41:41, skipping insertion in model container [2020-09-11 23:41:41,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 11:41:41" (3/3) ... [2020-09-11 23:41:41,996 INFO L109 eAbstractionObserver]: Analyzing ICFG safe014_pso.opt.i [2020-09-11 23:41:42,007 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-11 23:41:42,008 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-11 23:41:42,018 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-11 23:41:42,020 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-11 23:41:42,048 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:42,049 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:42,049 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:42,049 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:42,050 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:42,050 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:42,051 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:42,051 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:42,051 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:42,051 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:42,052 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:42,052 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:42,052 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:42,053 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:42,053 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:42,053 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:42,054 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:42,054 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:42,058 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:42,059 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:42,059 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:42,059 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:42,069 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:42,069 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:42,069 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:42,070 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:42,072 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:42,072 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:42,073 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:42,073 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:41:42,097 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-11 23:41:42,119 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 23:41:42,120 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 23:41:42,120 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-11 23:41:42,120 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-11 23:41:42,120 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 23:41:42,120 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 23:41:42,121 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 23:41:42,121 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 23:41:42,138 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-09-11 23:41:42,140 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-11 23:41:42,189 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-11 23:41:42,190 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 23:41:42,196 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 46 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. [2020-09-11 23:41:42,199 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-11 23:41:42,222 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-11 23:41:42,222 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 23:41:42,223 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 46 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. [2020-09-11 23:41:42,225 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-11 23:41:42,226 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-11 23:41:43,676 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-09-11 23:41:43,885 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2020-09-11 23:41:43,932 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2700 [2020-09-11 23:41:43,932 INFO L214 etLargeBlockEncoding]: Total number of compositions: 59 [2020-09-11 23:41:43,937 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-09-11 23:41:43,967 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-09-11 23:41:43,969 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-09-11 23:41:43,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-11 23:41:43,980 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:41:43,981 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:41:43,982 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:41:43,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:41:43,989 INFO L82 PathProgramCache]: Analyzing trace with hash -1011733384, now seen corresponding path program 1 times [2020-09-11 23:41:44,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:41:44,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417758256] [2020-09-11 23:41:44,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:41:44,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:41:44,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:41:44,289 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417758256] [2020-09-11 23:41:44,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:41:44,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-11 23:41:44,291 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [191400353] [2020-09-11 23:41:44,292 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:41:44,296 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:41:44,314 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-11 23:41:44,314 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:41:44,317 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:41:44,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 23:41:44,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:41:44,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 23:41:44,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 23:41:44,340 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-09-11 23:41:44,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:41:44,382 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-09-11 23:41:44,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 23:41:44,384 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-11 23:41:44,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:41:44,404 INFO L225 Difference]: With dead ends: 282 [2020-09-11 23:41:44,404 INFO L226 Difference]: Without dead ends: 218 [2020-09-11 23:41:44,406 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 23:41:44,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-09-11 23:41:44,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-09-11 23:41:44,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-09-11 23:41:44,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-09-11 23:41:44,482 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-09-11 23:41:44,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:41:44,483 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-09-11 23:41:44,483 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 23:41:44,483 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-09-11 23:41:44,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-11 23:41:44,485 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:41:44,485 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:41:44,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-11 23:41:44,486 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:41:44,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:41:44,486 INFO L82 PathProgramCache]: Analyzing trace with hash -1035713695, now seen corresponding path program 1 times [2020-09-11 23:41:44,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:41:44,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768616244] [2020-09-11 23:41:44,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:41:44,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:41:44,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:41:44,624 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768616244] [2020-09-11 23:41:44,624 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:41:44,624 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 23:41:44,624 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2110219153] [2020-09-11 23:41:44,625 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:41:44,625 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:41:44,628 INFO L274 McrAutomatonBuilder]: Finished intersection with 15 states and 19 transitions. [2020-09-11 23:41:44,628 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:41:44,676 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:41:44,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 23:41:44,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:41:44,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 23:41:44,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 23:41:44,679 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-09-11 23:41:44,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:41:44,706 INFO L93 Difference]: Finished difference Result 242 states and 634 transitions. [2020-09-11 23:41:44,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 23:41:44,706 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-09-11 23:41:44,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:41:44,708 INFO L225 Difference]: With dead ends: 242 [2020-09-11 23:41:44,708 INFO L226 Difference]: Without dead ends: 116 [2020-09-11 23:41:44,709 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-11 23:41:44,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-09-11 23:41:44,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2020-09-11 23:41:44,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-09-11 23:41:44,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 284 transitions. [2020-09-11 23:41:44,720 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 284 transitions. Word has length 9 [2020-09-11 23:41:44,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:41:44,720 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 284 transitions. [2020-09-11 23:41:44,720 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 23:41:44,720 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 284 transitions. [2020-09-11 23:41:44,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-11 23:41:44,721 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:41:44,722 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:41:44,722 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-11 23:41:44,722 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:41:44,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:41:44,722 INFO L82 PathProgramCache]: Analyzing trace with hash 1517475135, now seen corresponding path program 1 times [2020-09-11 23:41:44,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:41:44,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795056127] [2020-09-11 23:41:44,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:41:44,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:41:44,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:41:44,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795056127] [2020-09-11 23:41:44,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:41:44,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-11 23:41:44,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1599448961] [2020-09-11 23:41:44,801 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:41:44,803 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:41:44,805 INFO L274 McrAutomatonBuilder]: Finished intersection with 15 states and 17 transitions. [2020-09-11 23:41:44,805 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:41:44,815 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:41:44,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 23:41:44,816 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:41:44,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 23:41:44,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 23:41:44,816 INFO L87 Difference]: Start difference. First operand 116 states and 284 transitions. Second operand 3 states. [2020-09-11 23:41:44,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:41:44,837 INFO L93 Difference]: Finished difference Result 110 states and 265 transitions. [2020-09-11 23:41:44,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 23:41:44,838 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-09-11 23:41:44,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:41:44,839 INFO L225 Difference]: With dead ends: 110 [2020-09-11 23:41:44,839 INFO L226 Difference]: Without dead ends: 110 [2020-09-11 23:41:44,840 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 23:41:44,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-09-11 23:41:44,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2020-09-11 23:41:44,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-09-11 23:41:44,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 265 transitions. [2020-09-11 23:41:44,849 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 265 transitions. Word has length 11 [2020-09-11 23:41:44,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:41:44,849 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 265 transitions. [2020-09-11 23:41:44,849 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 23:41:44,850 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 265 transitions. [2020-09-11 23:41:44,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-11 23:41:44,851 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:41:44,851 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:41:44,851 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-11 23:41:44,851 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:41:44,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:41:44,852 INFO L82 PathProgramCache]: Analyzing trace with hash -142823170, now seen corresponding path program 1 times [2020-09-11 23:41:44,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:41:44,852 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508731077] [2020-09-11 23:41:44,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:41:44,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:41:44,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:41:44,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508731077] [2020-09-11 23:41:44,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:41:44,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 23:41:44,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [310930071] [2020-09-11 23:41:44,918 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:41:44,919 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:41:44,922 INFO L274 McrAutomatonBuilder]: Finished intersection with 19 states and 24 transitions. [2020-09-11 23:41:44,922 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:41:44,933 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:41:44,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 23:41:44,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:41:44,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 23:41:44,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 23:41:44,934 INFO L87 Difference]: Start difference. First operand 110 states and 265 transitions. Second operand 3 states. [2020-09-11 23:41:44,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:41:44,947 INFO L93 Difference]: Finished difference Result 104 states and 246 transitions. [2020-09-11 23:41:44,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 23:41:44,948 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-09-11 23:41:44,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:41:44,949 INFO L225 Difference]: With dead ends: 104 [2020-09-11 23:41:44,950 INFO L226 Difference]: Without dead ends: 104 [2020-09-11 23:41:44,950 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 23:41:44,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-09-11 23:41:44,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-09-11 23:41:44,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-09-11 23:41:44,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 246 transitions. [2020-09-11 23:41:44,958 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 246 transitions. Word has length 12 [2020-09-11 23:41:44,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:41:44,959 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 246 transitions. [2020-09-11 23:41:44,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 23:41:44,959 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 246 transitions. [2020-09-11 23:41:44,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-11 23:41:44,960 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:41:44,960 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:41:44,960 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-11 23:41:44,961 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:41:44,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:41:44,961 INFO L82 PathProgramCache]: Analyzing trace with hash -132602240, now seen corresponding path program 1 times [2020-09-11 23:41:44,961 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:41:44,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5172370] [2020-09-11 23:41:44,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:41:44,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:41:45,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:41:45,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5172370] [2020-09-11 23:41:45,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:41:45,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 23:41:45,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [719654917] [2020-09-11 23:41:45,032 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:41:45,034 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:41:45,037 INFO L274 McrAutomatonBuilder]: Finished intersection with 25 states and 37 transitions. [2020-09-11 23:41:45,037 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:41:45,068 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:41:45,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 23:41:45,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:41:45,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 23:41:45,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 23:41:45,070 INFO L87 Difference]: Start difference. First operand 104 states and 246 transitions. Second operand 4 states. [2020-09-11 23:41:45,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:41:45,119 INFO L93 Difference]: Finished difference Result 158 states and 375 transitions. [2020-09-11 23:41:45,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 23:41:45,120 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-09-11 23:41:45,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:41:45,121 INFO L225 Difference]: With dead ends: 158 [2020-09-11 23:41:45,121 INFO L226 Difference]: Without dead ends: 104 [2020-09-11 23:41:45,122 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-11 23:41:45,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-09-11 23:41:45,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-09-11 23:41:45,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-09-11 23:41:45,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 244 transitions. [2020-09-11 23:41:45,128 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 244 transitions. Word has length 13 [2020-09-11 23:41:45,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:41:45,129 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 244 transitions. [2020-09-11 23:41:45,129 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 23:41:45,129 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 244 transitions. [2020-09-11 23:41:45,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-11 23:41:45,130 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:41:45,130 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:41:45,130 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-11 23:41:45,131 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:41:45,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:41:45,131 INFO L82 PathProgramCache]: Analyzing trace with hash -1246852910, now seen corresponding path program 2 times [2020-09-11 23:41:45,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:41:45,132 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419297936] [2020-09-11 23:41:45,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:41:45,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:41:45,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:41:45,228 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419297936] [2020-09-11 23:41:45,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:41:45,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 23:41:45,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [216724229] [2020-09-11 23:41:45,230 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:41:45,231 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:41:45,234 INFO L274 McrAutomatonBuilder]: Finished intersection with 23 states and 31 transitions. [2020-09-11 23:41:45,234 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:41:45,307 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:41:45,325 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:41:45,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 23:41:45,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:41:45,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 23:41:45,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 23:41:45,326 INFO L87 Difference]: Start difference. First operand 104 states and 244 transitions. Second operand 4 states. [2020-09-11 23:41:45,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:41:45,358 INFO L93 Difference]: Finished difference Result 127 states and 275 transitions. [2020-09-11 23:41:45,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 23:41:45,358 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-09-11 23:41:45,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:41:45,359 INFO L225 Difference]: With dead ends: 127 [2020-09-11 23:41:45,359 INFO L226 Difference]: Without dead ends: 87 [2020-09-11 23:41:45,360 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-11 23:41:45,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-09-11 23:41:45,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-09-11 23:41:45,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-09-11 23:41:45,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 183 transitions. [2020-09-11 23:41:45,365 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 183 transitions. Word has length 13 [2020-09-11 23:41:45,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:41:45,365 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 183 transitions. [2020-09-11 23:41:45,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 23:41:45,365 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 183 transitions. [2020-09-11 23:41:45,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-11 23:41:45,366 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:41:45,367 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:41:45,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-11 23:41:45,367 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:41:45,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:41:45,367 INFO L82 PathProgramCache]: Analyzing trace with hash 433937672, now seen corresponding path program 1 times [2020-09-11 23:41:45,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:41:45,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867262965] [2020-09-11 23:41:45,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:41:45,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:41:45,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:41:45,441 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867262965] [2020-09-11 23:41:45,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:41:45,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 23:41:45,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2083503071] [2020-09-11 23:41:45,442 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:41:45,444 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:41:45,448 INFO L274 McrAutomatonBuilder]: Finished intersection with 27 states and 38 transitions. [2020-09-11 23:41:45,448 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:41:45,533 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3211#(<= ~__unbuffered_cnt~0 0)] [2020-09-11 23:41:45,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-11 23:41:45,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:41:45,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-11 23:41:45,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-11 23:41:45,535 INFO L87 Difference]: Start difference. First operand 87 states and 183 transitions. Second operand 6 states. [2020-09-11 23:41:45,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:41:45,588 INFO L93 Difference]: Finished difference Result 90 states and 175 transitions. [2020-09-11 23:41:45,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 23:41:45,589 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-09-11 23:41:45,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:41:45,590 INFO L225 Difference]: With dead ends: 90 [2020-09-11 23:41:45,590 INFO L226 Difference]: Without dead ends: 65 [2020-09-11 23:41:45,591 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-11 23:41:45,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-09-11 23:41:45,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-09-11 23:41:45,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-11 23:41:45,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 119 transitions. [2020-09-11 23:41:45,594 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 119 transitions. Word has length 14 [2020-09-11 23:41:45,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:41:45,595 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 119 transitions. [2020-09-11 23:41:45,595 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-11 23:41:45,595 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 119 transitions. [2020-09-11 23:41:45,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-11 23:41:45,596 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:41:45,596 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:41:45,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-11 23:41:45,597 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:41:45,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:41:45,597 INFO L82 PathProgramCache]: Analyzing trace with hash 567169455, now seen corresponding path program 1 times [2020-09-11 23:41:45,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:41:45,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370909309] [2020-09-11 23:41:45,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:41:45,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:41:45,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:41:45,674 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370909309] [2020-09-11 23:41:45,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:41:45,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-11 23:41:45,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1317748485] [2020-09-11 23:41:45,675 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:41:45,677 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:41:45,681 INFO L274 McrAutomatonBuilder]: Finished intersection with 27 states and 37 transitions. [2020-09-11 23:41:45,681 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:41:45,692 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:41:45,745 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3440#(<= ~__unbuffered_cnt~0 0)] [2020-09-11 23:41:45,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-11 23:41:45,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:41:45,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-11 23:41:45,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-11 23:41:45,746 INFO L87 Difference]: Start difference. First operand 65 states and 119 transitions. Second operand 7 states. [2020-09-11 23:41:45,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:41:45,796 INFO L93 Difference]: Finished difference Result 62 states and 111 transitions. [2020-09-11 23:41:45,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-11 23:41:45,796 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-09-11 23:41:45,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:41:45,797 INFO L225 Difference]: With dead ends: 62 [2020-09-11 23:41:45,797 INFO L226 Difference]: Without dead ends: 54 [2020-09-11 23:41:45,798 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-09-11 23:41:45,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-11 23:41:45,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-09-11 23:41:45,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-11 23:41:45,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 97 transitions. [2020-09-11 23:41:45,800 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 97 transitions. Word has length 15 [2020-09-11 23:41:45,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:41:45,801 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 97 transitions. [2020-09-11 23:41:45,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-11 23:41:45,801 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 97 transitions. [2020-09-11 23:41:45,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-11 23:41:45,802 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:41:45,802 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:41:45,802 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-11 23:41:45,802 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:41:45,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:41:45,803 INFO L82 PathProgramCache]: Analyzing trace with hash -412776350, now seen corresponding path program 1 times [2020-09-11 23:41:45,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:41:45,803 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982190292] [2020-09-11 23:41:45,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:41:45,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:41:45,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:41:45,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982190292] [2020-09-11 23:41:45,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:41:45,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 23:41:45,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [733184303] [2020-09-11 23:41:45,854 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:41:45,857 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:41:45,861 INFO L274 McrAutomatonBuilder]: Finished intersection with 30 states and 41 transitions. [2020-09-11 23:41:45,862 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:41:45,912 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:41:45,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 23:41:45,913 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:41:45,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 23:41:45,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 23:41:45,913 INFO L87 Difference]: Start difference. First operand 54 states and 97 transitions. Second operand 4 states. [2020-09-11 23:41:45,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:41:45,941 INFO L93 Difference]: Finished difference Result 63 states and 110 transitions. [2020-09-11 23:41:45,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 23:41:45,941 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-11 23:41:45,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:41:45,942 INFO L225 Difference]: With dead ends: 63 [2020-09-11 23:41:45,942 INFO L226 Difference]: Without dead ends: 35 [2020-09-11 23:41:45,942 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-11 23:41:45,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-09-11 23:41:45,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-09-11 23:41:45,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-09-11 23:41:45,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 56 transitions. [2020-09-11 23:41:45,944 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 56 transitions. Word has length 17 [2020-09-11 23:41:45,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:41:45,945 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 56 transitions. [2020-09-11 23:41:45,945 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 23:41:45,945 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 56 transitions. [2020-09-11 23:41:45,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-11 23:41:45,946 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:41:45,946 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:41:45,946 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-11 23:41:45,946 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:41:45,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:41:45,947 INFO L82 PathProgramCache]: Analyzing trace with hash 361560856, now seen corresponding path program 2 times [2020-09-11 23:41:45,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:41:45,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487496139] [2020-09-11 23:41:45,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:41:45,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:41:45,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:41:45,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487496139] [2020-09-11 23:41:45,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:41:45,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 23:41:45,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [409822829] [2020-09-11 23:41:45,996 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:41:45,998 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:41:46,002 INFO L274 McrAutomatonBuilder]: Finished intersection with 26 states and 34 transitions. [2020-09-11 23:41:46,003 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:41:46,019 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:41:46,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 23:41:46,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:41:46,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 23:41:46,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 23:41:46,021 INFO L87 Difference]: Start difference. First operand 35 states and 56 transitions. Second operand 4 states. [2020-09-11 23:41:46,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:41:46,037 INFO L93 Difference]: Finished difference Result 48 states and 77 transitions. [2020-09-11 23:41:46,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 23:41:46,038 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-11 23:41:46,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:41:46,039 INFO L225 Difference]: With dead ends: 48 [2020-09-11 23:41:46,039 INFO L226 Difference]: Without dead ends: 30 [2020-09-11 23:41:46,039 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-11 23:41:46,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-11 23:41:46,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-11 23:41:46,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-11 23:41:46,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 44 transitions. [2020-09-11 23:41:46,041 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 44 transitions. Word has length 17 [2020-09-11 23:41:46,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:41:46,041 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 44 transitions. [2020-09-11 23:41:46,042 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 23:41:46,042 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 44 transitions. [2020-09-11 23:41:46,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-11 23:41:46,042 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:41:46,042 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:41:46,043 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-11 23:41:46,043 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:41:46,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:41:46,043 INFO L82 PathProgramCache]: Analyzing trace with hash -550831814, now seen corresponding path program 3 times [2020-09-11 23:41:46,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:41:46,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78494005] [2020-09-11 23:41:46,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:41:46,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:41:46,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:41:46,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78494005] [2020-09-11 23:41:46,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:41:46,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 23:41:46,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [478043429] [2020-09-11 23:41:46,100 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:41:46,101 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:41:46,127 INFO L274 McrAutomatonBuilder]: Finished intersection with 24 states and 29 transitions. [2020-09-11 23:41:46,127 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:41:46,143 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:41:46,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 23:41:46,143 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:41:46,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 23:41:46,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 23:41:46,144 INFO L87 Difference]: Start difference. First operand 30 states and 44 transitions. Second operand 4 states. [2020-09-11 23:41:46,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:41:46,158 INFO L93 Difference]: Finished difference Result 29 states and 43 transitions. [2020-09-11 23:41:46,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 23:41:46,158 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-11 23:41:46,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:41:46,159 INFO L225 Difference]: With dead ends: 29 [2020-09-11 23:41:46,159 INFO L226 Difference]: Without dead ends: 0 [2020-09-11 23:41:46,159 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-11 23:41:46,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-11 23:41:46,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-11 23:41:46,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-11 23:41:46,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-11 23:41:46,160 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-09-11 23:41:46,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:41:46,161 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-11 23:41:46,161 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 23:41:46,161 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-11 23:41:46,161 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-11 23:41:46,161 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-11 23:41:46,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.09 11:41:46 BasicIcfg [2020-09-11 23:41:46,167 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-11 23:41:46,169 INFO L168 Benchmark]: Toolchain (without parser) took 5619.47 ms. Allocated memory was 140.0 MB in the beginning and 287.3 MB in the end (delta: 147.3 MB). Free memory was 101.7 MB in the beginning and 249.2 MB in the end (delta: -147.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-11 23:41:46,170 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-11 23:41:46,171 INFO L168 Benchmark]: CACSL2BoogieTranslator took 822.53 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 101.1 MB in the beginning and 161.5 MB in the end (delta: -60.4 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. [2020-09-11 23:41:46,171 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.56 ms. Allocated memory is still 203.4 MB. Free memory was 161.5 MB in the beginning and 159.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-11 23:41:46,172 INFO L168 Benchmark]: Boogie Preprocessor took 32.38 ms. Allocated memory is still 203.4 MB. Free memory was 159.5 MB in the beginning and 158.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-11 23:41:46,173 INFO L168 Benchmark]: RCFGBuilder took 516.86 ms. Allocated memory is still 203.4 MB. Free memory was 157.5 MB in the beginning and 135.9 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. [2020-09-11 23:41:46,174 INFO L168 Benchmark]: TraceAbstraction took 4179.61 ms. Allocated memory was 203.4 MB in the beginning and 287.3 MB in the end (delta: 83.9 MB). Free memory was 135.2 MB in the beginning and 249.2 MB in the end (delta: -114.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-11 23:41:46,178 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 822.53 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 101.1 MB in the beginning and 161.5 MB in the end (delta: -60.4 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 55.56 ms. Allocated memory is still 203.4 MB. Free memory was 161.5 MB in the beginning and 159.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 32.38 ms. Allocated memory is still 203.4 MB. Free memory was 159.5 MB in the beginning and 158.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 516.86 ms. Allocated memory is still 203.4 MB. Free memory was 157.5 MB in the beginning and 135.9 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4179.61 ms. Allocated memory was 203.4 MB in the beginning and 287.3 MB in the end (delta: 83.9 MB). Free memory was 135.2 MB in the beginning and 249.2 MB in the end (delta: -114.0 MB). There was no memory consumed. 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, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 657 VarBasedMoverChecksPositive, 26 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2700 CheckedPairsTotal, 59 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: 4.0s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 214 SDtfs, 135 SDslu, 261 SDs, 0 SdLazy, 142 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 123 GetRequests, 84 SyntacticMatches, 7 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 146 NumberOfCodeBlocks, 146 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 135 ConstructedInterpolants, 0 QuantifiedInterpolants, 4725 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...