/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe012_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-507b705 [2020-09-11 15:20:41,450 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-11 15:20:41,453 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-11 15:20:41,498 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-11 15:20:41,499 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-11 15:20:41,509 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-11 15:20:41,511 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-11 15:20:41,514 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-11 15:20:41,516 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-11 15:20:41,517 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-11 15:20:41,519 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-11 15:20:41,521 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-11 15:20:41,521 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-11 15:20:41,524 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-11 15:20:41,527 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-11 15:20:41,528 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-11 15:20:41,529 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-11 15:20:41,531 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-11 15:20:41,533 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-11 15:20:41,540 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-11 15:20:41,544 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-11 15:20:41,546 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-11 15:20:41,547 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-11 15:20:41,549 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-11 15:20:41,555 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-11 15:20:41,555 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-11 15:20:41,555 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-11 15:20:41,558 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-11 15:20:41,559 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-11 15:20:41,560 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-11 15:20:41,560 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-11 15:20:41,561 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-11 15:20:41,562 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-11 15:20:41,563 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-11 15:20:41,564 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-11 15:20:41,564 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-11 15:20:41,565 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-11 15:20:41,565 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-11 15:20:41,566 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-11 15:20:41,567 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-11 15:20:41,568 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-11 15:20:41,569 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-11 15:20:41,619 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-11 15:20:41,620 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-11 15:20:41,622 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-11 15:20:41,622 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-11 15:20:41,623 INFO L138 SettingsManager]: * Use SBE=true [2020-09-11 15:20:41,623 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-11 15:20:41,623 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-11 15:20:41,623 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-11 15:20:41,624 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-11 15:20:41,624 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-11 15:20:41,625 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-11 15:20:41,625 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-11 15:20:41,625 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-11 15:20:41,626 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-11 15:20:41,626 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-11 15:20:41,626 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-11 15:20:41,626 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-11 15:20:41,627 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-11 15:20:41,627 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-11 15:20:41,627 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-11 15:20:41,627 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-11 15:20:41,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-11 15:20:41,628 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-11 15:20:41,628 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-11 15:20:41,628 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-11 15:20:41,628 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-11 15:20:41,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-11 15:20:41,629 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-11 15:20:41,629 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-11 15:20:41,629 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-11 15:20:42,065 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-11 15:20:42,084 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-11 15:20:42,088 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-11 15:20:42,090 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-11 15:20:42,090 INFO L275 PluginConnector]: CDTParser initialized [2020-09-11 15:20:42,091 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe012_tso.oepc.i [2020-09-11 15:20:42,160 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/48a1bc528/741474f3ef364d0eb3495667fff04164/FLAGa2a23d7f3 [2020-09-11 15:20:42,706 INFO L306 CDTParser]: Found 1 translation units. [2020-09-11 15:20:42,707 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe012_tso.oepc.i [2020-09-11 15:20:42,726 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/48a1bc528/741474f3ef364d0eb3495667fff04164/FLAGa2a23d7f3 [2020-09-11 15:20:42,999 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/48a1bc528/741474f3ef364d0eb3495667fff04164 [2020-09-11 15:20:43,011 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-11 15:20:43,017 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-11 15:20:43,018 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-11 15:20:43,018 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-11 15:20:43,023 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-11 15:20:43,024 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 03:20:43" (1/1) ... [2020-09-11 15:20:43,028 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5972a649 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:20:43, skipping insertion in model container [2020-09-11 15:20:43,028 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 03:20:43" (1/1) ... [2020-09-11 15:20:43,036 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-11 15:20:43,097 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-11 15:20:43,744 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 15:20:43,757 INFO L203 MainTranslator]: Completed pre-run [2020-09-11 15:20:43,804 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 15:20:43,899 INFO L208 MainTranslator]: Completed translation [2020-09-11 15:20:43,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:20:43 WrapperNode [2020-09-11 15:20:43,900 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-11 15:20:43,900 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-11 15:20:43,901 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-11 15:20:43,901 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-11 15:20:43,910 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:20:43" (1/1) ... [2020-09-11 15:20:43,930 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:20:43" (1/1) ... [2020-09-11 15:20:43,955 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-11 15:20:43,956 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-11 15:20:43,956 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-11 15:20:43,956 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-11 15:20:43,968 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:20:43" (1/1) ... [2020-09-11 15:20:43,968 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:20:43" (1/1) ... [2020-09-11 15:20:43,973 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:20:43" (1/1) ... [2020-09-11 15:20:43,973 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:20:43" (1/1) ... [2020-09-11 15:20:43,980 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:20:43" (1/1) ... [2020-09-11 15:20:43,986 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:20:43" (1/1) ... [2020-09-11 15:20:43,991 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:20:43" (1/1) ... [2020-09-11 15:20:44,000 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-11 15:20:44,001 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-11 15:20:44,001 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-11 15:20:44,002 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-11 15:20:44,003 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:20:43" (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 15:20:44,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-11 15:20:44,087 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-11 15:20:44,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-11 15:20:44,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-11 15:20:44,088 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-11 15:20:44,088 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-11 15:20:44,088 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-11 15:20:44,088 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-11 15:20:44,088 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-11 15:20:44,089 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-11 15:20:44,089 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-11 15:20:44,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-11 15:20:44,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-11 15:20:44,092 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 15:20:44,520 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-11 15:20:44,520 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-11 15:20:44,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 03:20:44 BoogieIcfgContainer [2020-09-11 15:20:44,526 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-11 15:20:44,527 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-11 15:20:44,527 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-11 15:20:44,531 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-11 15:20:44,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 03:20:43" (1/3) ... [2020-09-11 15:20:44,532 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4175bc64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 03:20:44, skipping insertion in model container [2020-09-11 15:20:44,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:20:43" (2/3) ... [2020-09-11 15:20:44,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4175bc64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 03:20:44, skipping insertion in model container [2020-09-11 15:20:44,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 03:20:44" (3/3) ... [2020-09-11 15:20:44,535 INFO L109 eAbstractionObserver]: Analyzing ICFG safe012_tso.oepc.i [2020-09-11 15:20:44,545 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-11 15:20:44,545 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-11 15:20:44,555 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-11 15:20:44,556 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-11 15:20:44,598 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:20:44,598 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:20:44,598 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:20:44,598 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:20:44,600 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:20:44,600 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:20:44,600 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:20:44,601 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:20:44,602 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:20:44,602 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:20:44,602 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:20:44,603 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:20:44,604 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:20:44,604 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:20:44,604 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:20:44,604 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:20:44,605 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:20:44,605 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:20:44,612 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:20:44,612 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:20:44,613 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:20:44,613 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:20:44,626 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:20:44,626 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:20:44,627 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:20:44,627 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:20:44,636 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:20:44,636 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:20:44,637 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:20:44,637 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:20:44,662 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-11 15:20:44,686 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 15:20:44,686 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 15:20:44,686 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-11 15:20:44,686 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-11 15:20:44,686 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 15:20:44,687 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 15:20:44,687 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 15:20:44,687 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 15:20:44,707 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 71 transitions, 157 flow [2020-09-11 15:20:44,710 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-09-11 15:20:44,763 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-09-11 15:20:44,763 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 15:20:44,770 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 2/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-11 15:20:44,773 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-09-11 15:20:44,794 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-09-11 15:20:44,795 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 15:20:44,795 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 2/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-11 15:20:44,797 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-11 15:20:44,799 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-11 15:20:46,305 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-09-11 15:20:46,429 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2463 [2020-09-11 15:20:46,429 INFO L214 etLargeBlockEncoding]: Total number of compositions: 57 [2020-09-11 15:20:46,434 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-09-11 15:20:46,466 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-09-11 15:20:46,469 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-09-11 15:20:46,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-11 15:20:46,479 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:20:46,481 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:20:46,481 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:20:46,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:20:46,490 INFO L82 PathProgramCache]: Analyzing trace with hash -691335731, now seen corresponding path program 1 times [2020-09-11 15:20:46,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:20:46,503 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623712165] [2020-09-11 15:20:46,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:20:46,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:20:46,723 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 15:20:46,724 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623712165] [2020-09-11 15:20:46,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:20:46,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 15:20:46,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494465479] [2020-09-11 15:20:46,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-11 15:20:46,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:20:46,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-11 15:20:46,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-11 15:20:46,755 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-09-11 15:20:46,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:20:46,794 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-09-11 15:20:46,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-11 15:20:46,796 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-09-11 15:20:46,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:20:46,817 INFO L225 Difference]: With dead ends: 362 [2020-09-11 15:20:46,818 INFO L226 Difference]: Without dead ends: 298 [2020-09-11 15:20:46,820 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-11 15:20:46,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-09-11 15:20:46,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-09-11 15:20:46,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-09-11 15:20:46,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-09-11 15:20:46,907 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-09-11 15:20:46,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:20:46,908 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-09-11 15:20:46,908 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-11 15:20:46,909 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-09-11 15:20:46,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-11 15:20:46,910 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:20:46,910 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:20:46,911 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-11 15:20:46,911 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:20:46,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:20:46,912 INFO L82 PathProgramCache]: Analyzing trace with hash 43425274, now seen corresponding path program 1 times [2020-09-11 15:20:46,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:20:46,912 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127460070] [2020-09-11 15:20:46,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:20:46,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:20:47,093 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 15:20:47,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127460070] [2020-09-11 15:20:47,094 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:20:47,094 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 15:20:47,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712987886] [2020-09-11 15:20:47,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 15:20:47,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:20:47,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 15:20:47,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 15:20:47,097 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 5 states. [2020-09-11 15:20:47,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:20:47,188 INFO L93 Difference]: Finished difference Result 330 states and 912 transitions. [2020-09-11 15:20:47,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-11 15:20:47,188 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-09-11 15:20:47,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:20:47,192 INFO L225 Difference]: With dead ends: 330 [2020-09-11 15:20:47,192 INFO L226 Difference]: Without dead ends: 266 [2020-09-11 15:20:47,193 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-11 15:20:47,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-09-11 15:20:47,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-09-11 15:20:47,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-09-11 15:20:47,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 752 transitions. [2020-09-11 15:20:47,215 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 752 transitions. Word has length 9 [2020-09-11 15:20:47,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:20:47,215 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 752 transitions. [2020-09-11 15:20:47,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 15:20:47,216 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 752 transitions. [2020-09-11 15:20:47,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-11 15:20:47,217 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:20:47,217 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:20:47,218 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-11 15:20:47,218 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:20:47,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:20:47,218 INFO L82 PathProgramCache]: Analyzing trace with hash 1345064228, now seen corresponding path program 1 times [2020-09-11 15:20:47,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:20:47,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713861266] [2020-09-11 15:20:47,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:20:47,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:20:47,358 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 15:20:47,359 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713861266] [2020-09-11 15:20:47,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:20:47,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 15:20:47,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888599532] [2020-09-11 15:20:47,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 15:20:47,360 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:20:47,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 15:20:47,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 15:20:47,361 INFO L87 Difference]: Start difference. First operand 266 states and 752 transitions. Second operand 5 states. [2020-09-11 15:20:47,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:20:47,442 INFO L93 Difference]: Finished difference Result 290 states and 786 transitions. [2020-09-11 15:20:47,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-11 15:20:47,443 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-09-11 15:20:47,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:20:47,445 INFO L225 Difference]: With dead ends: 290 [2020-09-11 15:20:47,445 INFO L226 Difference]: Without dead ends: 242 [2020-09-11 15:20:47,447 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-11 15:20:47,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-09-11 15:20:47,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2020-09-11 15:20:47,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-09-11 15:20:47,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 670 transitions. [2020-09-11 15:20:47,479 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 670 transitions. Word has length 10 [2020-09-11 15:20:47,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:20:47,480 INFO L479 AbstractCegarLoop]: Abstraction has 242 states and 670 transitions. [2020-09-11 15:20:47,480 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 15:20:47,480 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 670 transitions. [2020-09-11 15:20:47,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-11 15:20:47,485 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:20:47,485 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:20:47,485 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-11 15:20:47,486 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:20:47,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:20:47,486 INFO L82 PathProgramCache]: Analyzing trace with hash 1654538757, now seen corresponding path program 1 times [2020-09-11 15:20:47,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:20:47,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188850788] [2020-09-11 15:20:47,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:20:47,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:20:47,606 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 15:20:47,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188850788] [2020-09-11 15:20:47,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:20:47,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 15:20:47,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064731538] [2020-09-11 15:20:47,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 15:20:47,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:20:47,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 15:20:47,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-11 15:20:47,609 INFO L87 Difference]: Start difference. First operand 242 states and 670 transitions. Second operand 5 states. [2020-09-11 15:20:47,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:20:47,662 INFO L93 Difference]: Finished difference Result 302 states and 815 transitions. [2020-09-11 15:20:47,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 15:20:47,662 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-09-11 15:20:47,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:20:47,664 INFO L225 Difference]: With dead ends: 302 [2020-09-11 15:20:47,664 INFO L226 Difference]: Without dead ends: 140 [2020-09-11 15:20:47,665 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-09-11 15:20:47,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-09-11 15:20:47,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2020-09-11 15:20:47,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-09-11 15:20:47,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 354 transitions. [2020-09-11 15:20:47,671 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 354 transitions. Word has length 11 [2020-09-11 15:20:47,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:20:47,671 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 354 transitions. [2020-09-11 15:20:47,671 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 15:20:47,672 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 354 transitions. [2020-09-11 15:20:47,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-11 15:20:47,673 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:20:47,673 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:20:47,673 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-11 15:20:47,673 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:20:47,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:20:47,674 INFO L82 PathProgramCache]: Analyzing trace with hash -234537171, now seen corresponding path program 1 times [2020-09-11 15:20:47,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:20:47,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537646119] [2020-09-11 15:20:47,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:20:47,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:20:47,785 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 15:20:47,785 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537646119] [2020-09-11 15:20:47,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:20:47,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-11 15:20:47,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741587657] [2020-09-11 15:20:47,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-11 15:20:47,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:20:47,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-11 15:20:47,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-11 15:20:47,805 INFO L87 Difference]: Start difference. First operand 140 states and 354 transitions. Second operand 6 states. [2020-09-11 15:20:47,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:20:47,930 INFO L93 Difference]: Finished difference Result 176 states and 428 transitions. [2020-09-11 15:20:47,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-11 15:20:47,930 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-09-11 15:20:47,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:20:47,931 INFO L225 Difference]: With dead ends: 176 [2020-09-11 15:20:47,931 INFO L226 Difference]: Without dead ends: 80 [2020-09-11 15:20:47,932 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-09-11 15:20:47,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-09-11 15:20:47,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-09-11 15:20:47,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-09-11 15:20:47,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 176 transitions. [2020-09-11 15:20:47,936 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 176 transitions. Word has length 12 [2020-09-11 15:20:47,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:20:47,936 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 176 transitions. [2020-09-11 15:20:47,936 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-11 15:20:47,937 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 176 transitions. [2020-09-11 15:20:47,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-11 15:20:47,937 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:20:47,938 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:20:47,938 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-11 15:20:47,938 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:20:47,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:20:47,938 INFO L82 PathProgramCache]: Analyzing trace with hash -627503362, now seen corresponding path program 1 times [2020-09-11 15:20:47,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:20:47,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075052806] [2020-09-11 15:20:47,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:20:47,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:20:48,011 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 15:20:48,012 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075052806] [2020-09-11 15:20:48,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:20:48,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 15:20:48,013 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009035636] [2020-09-11 15:20:48,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 15:20:48,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:20:48,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 15:20:48,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 15:20:48,014 INFO L87 Difference]: Start difference. First operand 80 states and 176 transitions. Second operand 4 states. [2020-09-11 15:20:48,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:20:48,049 INFO L93 Difference]: Finished difference Result 91 states and 181 transitions. [2020-09-11 15:20:48,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 15:20:48,050 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-09-11 15:20:48,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:20:48,050 INFO L225 Difference]: With dead ends: 91 [2020-09-11 15:20:48,051 INFO L226 Difference]: Without dead ends: 69 [2020-09-11 15:20:48,051 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 15:20:48,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-09-11 15:20:48,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-09-11 15:20:48,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-09-11 15:20:48,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 138 transitions. [2020-09-11 15:20:48,054 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 138 transitions. Word has length 14 [2020-09-11 15:20:48,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:20:48,054 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 138 transitions. [2020-09-11 15:20:48,055 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 15:20:48,055 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 138 transitions. [2020-09-11 15:20:48,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-11 15:20:48,055 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:20:48,056 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:20:48,056 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-11 15:20:48,056 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:20:48,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:20:48,056 INFO L82 PathProgramCache]: Analyzing trace with hash 822538733, now seen corresponding path program 1 times [2020-09-11 15:20:48,057 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:20:48,057 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542837437] [2020-09-11 15:20:48,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:20:48,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:20:48,149 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 15:20:48,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542837437] [2020-09-11 15:20:48,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:20:48,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-11 15:20:48,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304346055] [2020-09-11 15:20:48,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 15:20:48,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:20:48,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 15:20:48,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 15:20:48,151 INFO L87 Difference]: Start difference. First operand 69 states and 138 transitions. Second operand 5 states. [2020-09-11 15:20:48,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:20:48,204 INFO L93 Difference]: Finished difference Result 65 states and 113 transitions. [2020-09-11 15:20:48,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 15:20:48,205 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-09-11 15:20:48,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:20:48,205 INFO L225 Difference]: With dead ends: 65 [2020-09-11 15:20:48,205 INFO L226 Difference]: Without dead ends: 50 [2020-09-11 15:20:48,206 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-11 15:20:48,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-11 15:20:48,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-09-11 15:20:48,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-11 15:20:48,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 83 transitions. [2020-09-11 15:20:48,208 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 83 transitions. Word has length 15 [2020-09-11 15:20:48,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:20:48,209 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 83 transitions. [2020-09-11 15:20:48,209 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 15:20:48,209 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 83 transitions. [2020-09-11 15:20:48,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-11 15:20:48,210 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:20:48,210 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:20:48,210 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-11 15:20:48,210 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:20:48,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:20:48,211 INFO L82 PathProgramCache]: Analyzing trace with hash -246333940, now seen corresponding path program 1 times [2020-09-11 15:20:48,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:20:48,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640766808] [2020-09-11 15:20:48,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:20:48,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:20:48,301 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 15:20:48,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640766808] [2020-09-11 15:20:48,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:20:48,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-11 15:20:48,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324868184] [2020-09-11 15:20:48,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-11 15:20:48,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:20:48,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-11 15:20:48,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-11 15:20:48,303 INFO L87 Difference]: Start difference. First operand 50 states and 83 transitions. Second operand 6 states. [2020-09-11 15:20:48,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:20:48,353 INFO L93 Difference]: Finished difference Result 43 states and 67 transitions. [2020-09-11 15:20:48,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-11 15:20:48,353 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-09-11 15:20:48,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:20:48,354 INFO L225 Difference]: With dead ends: 43 [2020-09-11 15:20:48,354 INFO L226 Difference]: Without dead ends: 37 [2020-09-11 15:20:48,354 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-11 15:20:48,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-09-11 15:20:48,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-09-11 15:20:48,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-09-11 15:20:48,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 57 transitions. [2020-09-11 15:20:48,356 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 57 transitions. Word has length 16 [2020-09-11 15:20:48,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:20:48,357 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 57 transitions. [2020-09-11 15:20:48,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-11 15:20:48,358 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 57 transitions. [2020-09-11 15:20:48,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-11 15:20:48,359 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:20:48,359 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:20:48,359 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-11 15:20:48,359 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:20:48,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:20:48,367 INFO L82 PathProgramCache]: Analyzing trace with hash -570484421, now seen corresponding path program 1 times [2020-09-11 15:20:48,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:20:48,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529471612] [2020-09-11 15:20:48,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:20:48,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:20:48,441 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 15:20:48,442 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529471612] [2020-09-11 15:20:48,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:20:48,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-11 15:20:48,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063647156] [2020-09-11 15:20:48,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 15:20:48,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:20:48,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 15:20:48,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-11 15:20:48,444 INFO L87 Difference]: Start difference. First operand 37 states and 57 transitions. Second operand 5 states. [2020-09-11 15:20:48,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:20:48,470 INFO L93 Difference]: Finished difference Result 36 states and 56 transitions. [2020-09-11 15:20:48,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 15:20:48,470 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-09-11 15:20:48,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:20:48,471 INFO L225 Difference]: With dead ends: 36 [2020-09-11 15:20:48,471 INFO L226 Difference]: Without dead ends: 0 [2020-09-11 15:20:48,472 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-11 15:20:48,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-11 15:20:48,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-11 15:20:48,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-11 15:20:48,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-11 15:20:48,473 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-09-11 15:20:48,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:20:48,473 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-11 15:20:48,473 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 15:20:48,474 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-11 15:20:48,474 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-11 15:20:48,474 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-11 15:20:48,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.09 03:20:48 BasicIcfg [2020-09-11 15:20:48,479 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-11 15:20:48,481 INFO L168 Benchmark]: Toolchain (without parser) took 5468.48 ms. Allocated memory was 144.7 MB in the beginning and 249.0 MB in the end (delta: 104.3 MB). Free memory was 99.9 MB in the beginning and 132.4 MB in the end (delta: -32.5 MB). Peak memory consumption was 71.8 MB. Max. memory is 7.1 GB. [2020-09-11 15:20:48,482 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 144.7 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-11 15:20:48,483 INFO L168 Benchmark]: CACSL2BoogieTranslator took 881.91 ms. Allocated memory was 144.7 MB in the beginning and 204.5 MB in the end (delta: 59.8 MB). Free memory was 99.2 MB in the beginning and 161.0 MB in the end (delta: -61.8 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. [2020-09-11 15:20:48,483 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.19 ms. Allocated memory is still 204.5 MB. Free memory was 161.0 MB in the beginning and 158.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-09-11 15:20:48,484 INFO L168 Benchmark]: Boogie Preprocessor took 44.86 ms. Allocated memory is still 204.5 MB. Free memory was 158.9 MB in the beginning and 156.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-11 15:20:48,485 INFO L168 Benchmark]: RCFGBuilder took 524.56 ms. Allocated memory is still 204.5 MB. Free memory was 156.9 MB in the beginning and 134.9 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2020-09-11 15:20:48,486 INFO L168 Benchmark]: TraceAbstraction took 3951.64 ms. Allocated memory was 204.5 MB in the beginning and 249.0 MB in the end (delta: 44.6 MB). Free memory was 134.3 MB in the beginning and 132.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 46.4 MB. Max. memory is 7.1 GB. [2020-09-11 15:20:48,490 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 144.7 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 881.91 ms. Allocated memory was 144.7 MB in the beginning and 204.5 MB in the end (delta: 59.8 MB). Free memory was 99.2 MB in the beginning and 161.0 MB in the end (delta: -61.8 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 55.19 ms. Allocated memory is still 204.5 MB. Free memory was 161.0 MB in the beginning and 158.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 44.86 ms. Allocated memory is still 204.5 MB. Free memory was 158.9 MB in the beginning and 156.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 524.56 ms. Allocated memory is still 204.5 MB. Free memory was 156.9 MB in the beginning and 134.9 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3951.64 ms. Allocated memory was 204.5 MB in the beginning and 249.0 MB in the end (delta: 44.6 MB). Free memory was 134.3 MB in the beginning and 132.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 46.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.7s, 79 ProgramPointsBefore, 32 ProgramPointsAfterwards, 71 TransitionsBefore, 23 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 15 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 1 ChoiceCompositions, 695 VarBasedMoverChecksPositive, 31 VarBasedMoverChecksNegative, 17 SemBasedMoverChecksPositive, 29 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 2463 CheckedPairsTotal, 57 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, 70 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.7s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 171 SDtfs, 225 SDslu, 298 SDs, 0 SdLazy, 179 SolverSat, 41 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 104 ConstructedInterpolants, 0 QuantifiedInterpolants, 4930 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...