/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/safe008_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-507b705 [2020-09-11 15:13:35,884 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-11 15:13:35,888 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-11 15:13:35,914 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-11 15:13:35,914 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-11 15:13:35,915 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-11 15:13:35,917 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-11 15:13:35,918 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-11 15:13:35,920 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-11 15:13:35,921 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-11 15:13:35,922 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-11 15:13:35,923 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-11 15:13:35,923 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-11 15:13:35,924 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-11 15:13:35,925 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-11 15:13:35,927 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-11 15:13:35,927 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-11 15:13:35,928 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-11 15:13:35,930 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-11 15:13:35,932 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-11 15:13:35,934 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-11 15:13:35,935 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-11 15:13:35,936 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-11 15:13:35,937 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-11 15:13:35,939 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-11 15:13:35,942 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-11 15:13:35,943 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-11 15:13:35,944 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-11 15:13:35,944 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-11 15:13:35,945 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-11 15:13:35,946 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-11 15:13:35,946 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-11 15:13:35,946 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-11 15:13:35,947 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-11 15:13:35,947 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-11 15:13:35,948 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-11 15:13:35,949 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 15:13:35,975 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-11 15:13:35,975 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-11 15:13:35,977 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-11 15:13:35,977 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-11 15:13:35,977 INFO L138 SettingsManager]: * Use SBE=true [2020-09-11 15:13:35,977 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-11 15:13:35,978 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-11 15:13:35,978 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-11 15:13:35,978 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-11 15:13:35,978 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-11 15:13:35,978 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-11 15:13:35,978 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-11 15:13:35,979 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-11 15:13:35,979 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-11 15:13:35,979 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-11 15:13:35,979 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-11 15:13:35,979 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-11 15:13:35,980 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-11 15:13:35,980 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-11 15:13:35,980 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-11 15:13:35,980 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-11 15:13:35,981 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-11 15:13:35,981 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-11 15:13:35,981 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-11 15:13:35,981 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-11 15:13:35,981 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-11 15:13:35,982 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-11 15:13:35,982 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-11 15:13:35,982 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-11 15:13:35,982 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-11 15:13:36,449 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-11 15:13:36,476 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-11 15:13:36,482 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-11 15:13:36,484 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-11 15:13:36,485 INFO L275 PluginConnector]: CDTParser initialized [2020-09-11 15:13:36,486 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe008_tso.oepc.i [2020-09-11 15:13:36,574 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3a977f323/0cf8ee2284734284acd2c9d30b112ef2/FLAGad9b8eb96 [2020-09-11 15:13:37,215 INFO L306 CDTParser]: Found 1 translation units. [2020-09-11 15:13:37,216 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe008_tso.oepc.i [2020-09-11 15:13:37,237 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3a977f323/0cf8ee2284734284acd2c9d30b112ef2/FLAGad9b8eb96 [2020-09-11 15:13:37,483 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3a977f323/0cf8ee2284734284acd2c9d30b112ef2 [2020-09-11 15:13:37,500 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-11 15:13:37,509 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-11 15:13:37,513 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-11 15:13:37,513 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-11 15:13:37,517 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-11 15:13:37,518 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 03:13:37" (1/1) ... [2020-09-11 15:13:37,523 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ceedc44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:13:37, skipping insertion in model container [2020-09-11 15:13:37,524 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 03:13:37" (1/1) ... [2020-09-11 15:13:37,534 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-11 15:13:37,605 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-11 15:13:38,151 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 15:13:38,169 INFO L203 MainTranslator]: Completed pre-run [2020-09-11 15:13:38,255 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 15:13:38,349 INFO L208 MainTranslator]: Completed translation [2020-09-11 15:13:38,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:13:38 WrapperNode [2020-09-11 15:13:38,350 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-11 15:13:38,351 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-11 15:13:38,351 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-11 15:13:38,351 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-11 15:13:38,363 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:13:38" (1/1) ... [2020-09-11 15:13:38,382 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:13:38" (1/1) ... [2020-09-11 15:13:38,411 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-11 15:13:38,411 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-11 15:13:38,411 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-11 15:13:38,412 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-11 15:13:38,423 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:13:38" (1/1) ... [2020-09-11 15:13:38,424 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:13:38" (1/1) ... [2020-09-11 15:13:38,430 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:13:38" (1/1) ... [2020-09-11 15:13:38,430 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:13:38" (1/1) ... [2020-09-11 15:13:38,442 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:13:38" (1/1) ... [2020-09-11 15:13:38,446 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:13:38" (1/1) ... [2020-09-11 15:13:38,451 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:13:38" (1/1) ... [2020-09-11 15:13:38,458 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-11 15:13:38,459 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-11 15:13:38,462 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-11 15:13:38,462 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-11 15:13:38,463 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:13:38" (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 15:13:38,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-11 15:13:38,541 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-11 15:13:38,541 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-11 15:13:38,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-11 15:13:38,542 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-11 15:13:38,542 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-11 15:13:38,542 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-11 15:13:38,542 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-11 15:13:38,543 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-11 15:13:38,543 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-11 15:13:38,543 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-11 15:13:38,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-11 15:13:38,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-11 15:13:38,547 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 15:13:38,936 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-11 15:13:38,937 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-11 15:13:38,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 03:13:38 BoogieIcfgContainer [2020-09-11 15:13:38,943 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-11 15:13:38,944 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-11 15:13:38,944 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-11 15:13:38,948 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-11 15:13:38,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 03:13:37" (1/3) ... [2020-09-11 15:13:38,949 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20952203 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 03:13:38, skipping insertion in model container [2020-09-11 15:13:38,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:13:38" (2/3) ... [2020-09-11 15:13:38,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20952203 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 03:13:38, skipping insertion in model container [2020-09-11 15:13:38,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 03:13:38" (3/3) ... [2020-09-11 15:13:38,953 INFO L109 eAbstractionObserver]: Analyzing ICFG safe008_tso.oepc.i [2020-09-11 15:13:38,965 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-11 15:13:38,965 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-11 15:13:38,975 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-11 15:13:38,976 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-11 15:13:39,008 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:13:39,009 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:13:39,009 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:13:39,009 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:13:39,010 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:13:39,010 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:13:39,010 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:13:39,011 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:13:39,011 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:13:39,011 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:13:39,012 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:13:39,012 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:13:39,012 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:13:39,013 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:13:39,013 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:13:39,013 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:13:39,013 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:13:39,014 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:13:39,019 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:13:39,019 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:13:39,019 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:13:39,020 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:13:39,026 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:13:39,026 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:13:39,027 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:13:39,027 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:13:39,029 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:13:39,030 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:13:39,030 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:13:39,030 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:13:39,058 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-11 15:13:39,081 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 15:13:39,081 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 15:13:39,082 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-11 15:13:39,082 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-11 15:13:39,082 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 15:13:39,082 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 15:13:39,082 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 15:13:39,082 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 15:13:39,100 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-09-11 15:13:39,102 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-11 15:13:39,154 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-11 15:13:39,154 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 15:13:39,161 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 15:13:39,164 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-11 15:13:39,201 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-11 15:13:39,201 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 15:13:39,202 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 15:13:39,207 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-11 15:13:39,211 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-11 15:13:40,724 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-09-11 15:13:40,773 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2250 [2020-09-11 15:13:40,774 INFO L214 etLargeBlockEncoding]: Total number of compositions: 55 [2020-09-11 15:13:40,779 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-09-11 15:13:40,810 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-09-11 15:13:40,812 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-09-11 15:13:40,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-11 15:13:40,823 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:13:40,824 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:13:40,824 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:13:40,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:13:40,831 INFO L82 PathProgramCache]: Analyzing trace with hash 1626400852, now seen corresponding path program 1 times [2020-09-11 15:13:40,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:13:40,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285960419] [2020-09-11 15:13:40,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:13:40,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:13:41,056 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 15:13:41,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285960419] [2020-09-11 15:13:41,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:13:41,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 15:13:41,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562281379] [2020-09-11 15:13:41,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-11 15:13:41,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:13:41,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-11 15:13:41,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-11 15:13:41,090 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-09-11 15:13:41,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:13:41,130 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-09-11 15:13:41,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-11 15:13:41,132 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-09-11 15:13:41,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:13:41,154 INFO L225 Difference]: With dead ends: 362 [2020-09-11 15:13:41,154 INFO L226 Difference]: Without dead ends: 298 [2020-09-11 15:13:41,156 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 15:13:41,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-09-11 15:13:41,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-09-11 15:13:41,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-09-11 15:13:41,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-09-11 15:13:41,241 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-09-11 15:13:41,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:13:41,243 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-09-11 15:13:41,243 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-11 15:13:41,243 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-09-11 15:13:41,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-11 15:13:41,245 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:13:41,246 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:13:41,248 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-11 15:13:41,248 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:13:41,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:13:41,249 INFO L82 PathProgramCache]: Analyzing trace with hash -1121187596, now seen corresponding path program 1 times [2020-09-11 15:13:41,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:13:41,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231864319] [2020-09-11 15:13:41,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:13:41,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:13:41,455 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 15:13:41,455 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231864319] [2020-09-11 15:13:41,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:13:41,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 15:13:41,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467203783] [2020-09-11 15:13:41,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 15:13:41,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:13:41,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 15:13:41,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 15:13:41,459 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 5 states. [2020-09-11 15:13:41,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:13:41,543 INFO L93 Difference]: Finished difference Result 330 states and 912 transitions. [2020-09-11 15:13:41,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-11 15:13:41,544 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-09-11 15:13:41,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:13:41,547 INFO L225 Difference]: With dead ends: 330 [2020-09-11 15:13:41,548 INFO L226 Difference]: Without dead ends: 266 [2020-09-11 15:13:41,549 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 15:13:41,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-09-11 15:13:41,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-09-11 15:13:41,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-09-11 15:13:41,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 752 transitions. [2020-09-11 15:13:41,586 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 752 transitions. Word has length 9 [2020-09-11 15:13:41,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:13:41,587 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 752 transitions. [2020-09-11 15:13:41,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 15:13:41,587 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 752 transitions. [2020-09-11 15:13:41,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-11 15:13:41,593 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:13:41,593 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:13:41,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-11 15:13:41,594 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:13:41,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:13:41,594 INFO L82 PathProgramCache]: Analyzing trace with hash -397698604, now seen corresponding path program 1 times [2020-09-11 15:13:41,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:13:41,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305379181] [2020-09-11 15:13:41,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:13:41,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:13:41,701 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 15:13:41,701 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305379181] [2020-09-11 15:13:41,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:13:41,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 15:13:41,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964280709] [2020-09-11 15:13:41,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 15:13:41,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:13:41,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 15:13:41,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 15:13:41,703 INFO L87 Difference]: Start difference. First operand 266 states and 752 transitions. Second operand 5 states. [2020-09-11 15:13:41,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:13:41,765 INFO L93 Difference]: Finished difference Result 290 states and 786 transitions. [2020-09-11 15:13:41,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-11 15:13:41,765 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-09-11 15:13:41,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:13:41,768 INFO L225 Difference]: With dead ends: 290 [2020-09-11 15:13:41,768 INFO L226 Difference]: Without dead ends: 242 [2020-09-11 15:13:41,769 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 15:13:41,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-09-11 15:13:41,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2020-09-11 15:13:41,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-09-11 15:13:41,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 670 transitions. [2020-09-11 15:13:41,785 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 670 transitions. Word has length 10 [2020-09-11 15:13:41,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:13:41,785 INFO L479 AbstractCegarLoop]: Abstraction has 242 states and 670 transitions. [2020-09-11 15:13:41,785 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 15:13:41,785 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 670 transitions. [2020-09-11 15:13:41,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-11 15:13:41,787 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:13:41,787 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:13:41,787 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-11 15:13:41,787 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:13:41,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:13:41,788 INFO L82 PathProgramCache]: Analyzing trace with hash 2136362745, now seen corresponding path program 1 times [2020-09-11 15:13:41,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:13:41,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581118518] [2020-09-11 15:13:41,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:13:41,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:13:41,908 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 15:13:41,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581118518] [2020-09-11 15:13:41,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:13:41,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 15:13:41,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141197023] [2020-09-11 15:13:41,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 15:13:41,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:13:41,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 15:13:41,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-11 15:13:41,911 INFO L87 Difference]: Start difference. First operand 242 states and 670 transitions. Second operand 5 states. [2020-09-11 15:13:41,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:13:41,966 INFO L93 Difference]: Finished difference Result 302 states and 803 transitions. [2020-09-11 15:13:41,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 15:13:41,966 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-09-11 15:13:41,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:13:41,968 INFO L225 Difference]: With dead ends: 302 [2020-09-11 15:13:41,968 INFO L226 Difference]: Without dead ends: 146 [2020-09-11 15:13:41,968 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 15:13:41,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-09-11 15:13:41,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-09-11 15:13:41,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-09-11 15:13:41,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 358 transitions. [2020-09-11 15:13:41,977 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 358 transitions. Word has length 11 [2020-09-11 15:13:41,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:13:41,977 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 358 transitions. [2020-09-11 15:13:41,977 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 15:13:41,977 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 358 transitions. [2020-09-11 15:13:41,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-11 15:13:41,979 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:13:41,979 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:13:41,979 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-11 15:13:41,979 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:13:41,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:13:41,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1939864517, now seen corresponding path program 1 times [2020-09-11 15:13:41,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:13:41,980 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562410816] [2020-09-11 15:13:41,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:13:41,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:13:42,084 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 15:13:42,085 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562410816] [2020-09-11 15:13:42,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:13:42,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-11 15:13:42,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512176258] [2020-09-11 15:13:42,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-11 15:13:42,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:13:42,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-11 15:13:42,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-11 15:13:42,088 INFO L87 Difference]: Start difference. First operand 146 states and 358 transitions. Second operand 6 states. [2020-09-11 15:13:42,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:13:42,236 INFO L93 Difference]: Finished difference Result 194 states and 465 transitions. [2020-09-11 15:13:42,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-11 15:13:42,240 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-09-11 15:13:42,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:13:42,241 INFO L225 Difference]: With dead ends: 194 [2020-09-11 15:13:42,242 INFO L226 Difference]: Without dead ends: 116 [2020-09-11 15:13:42,245 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 15:13:42,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-09-11 15:13:42,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2020-09-11 15:13:42,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-09-11 15:13:42,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 264 transitions. [2020-09-11 15:13:42,254 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 264 transitions. Word has length 13 [2020-09-11 15:13:42,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:13:42,254 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 264 transitions. [2020-09-11 15:13:42,254 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-11 15:13:42,254 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 264 transitions. [2020-09-11 15:13:42,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-11 15:13:42,258 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:13:42,259 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:13:42,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-11 15:13:42,259 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:13:42,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:13:42,260 INFO L82 PathProgramCache]: Analyzing trace with hash -471367565, now seen corresponding path program 1 times [2020-09-11 15:13:42,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:13:42,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808678127] [2020-09-11 15:13:42,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:13:42,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:13:42,394 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 15:13:42,394 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808678127] [2020-09-11 15:13:42,394 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:13:42,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-11 15:13:42,395 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570432857] [2020-09-11 15:13:42,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-11 15:13:42,395 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:13:42,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-11 15:13:42,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-11 15:13:42,396 INFO L87 Difference]: Start difference. First operand 116 states and 264 transitions. Second operand 6 states. [2020-09-11 15:13:42,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:13:42,469 INFO L93 Difference]: Finished difference Result 131 states and 289 transitions. [2020-09-11 15:13:42,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-11 15:13:42,469 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-09-11 15:13:42,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:13:42,471 INFO L225 Difference]: With dead ends: 131 [2020-09-11 15:13:42,471 INFO L226 Difference]: Without dead ends: 98 [2020-09-11 15:13:42,472 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-09-11 15:13:42,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-09-11 15:13:42,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2020-09-11 15:13:42,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-09-11 15:13:42,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 218 transitions. [2020-09-11 15:13:42,477 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 218 transitions. Word has length 14 [2020-09-11 15:13:42,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:13:42,477 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 218 transitions. [2020-09-11 15:13:42,477 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-11 15:13:42,478 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 218 transitions. [2020-09-11 15:13:42,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-11 15:13:42,482 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:13:42,482 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:13:42,484 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-11 15:13:42,484 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:13:42,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:13:42,484 INFO L82 PathProgramCache]: Analyzing trace with hash -484565939, now seen corresponding path program 1 times [2020-09-11 15:13:42,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:13:42,485 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142677370] [2020-09-11 15:13:42,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:13:42,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:13:42,566 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 15:13:42,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142677370] [2020-09-11 15:13:42,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:13:42,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 15:13:42,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785602509] [2020-09-11 15:13:42,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 15:13:42,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:13:42,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 15:13:42,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 15:13:42,568 INFO L87 Difference]: Start difference. First operand 98 states and 218 transitions. Second operand 4 states. [2020-09-11 15:13:42,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:13:42,606 INFO L93 Difference]: Finished difference Result 109 states and 223 transitions. [2020-09-11 15:13:42,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 15:13:42,607 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-09-11 15:13:42,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:13:42,608 INFO L225 Difference]: With dead ends: 109 [2020-09-11 15:13:42,608 INFO L226 Difference]: Without dead ends: 87 [2020-09-11 15:13:42,609 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 15:13:42,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-09-11 15:13:42,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-09-11 15:13:42,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-09-11 15:13:42,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 180 transitions. [2020-09-11 15:13:42,613 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 180 transitions. Word has length 14 [2020-09-11 15:13:42,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:13:42,614 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 180 transitions. [2020-09-11 15:13:42,614 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 15:13:42,614 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 180 transitions. [2020-09-11 15:13:42,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-11 15:13:42,615 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:13:42,615 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:13:42,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-11 15:13:42,615 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:13:42,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:13:42,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1643108637, now seen corresponding path program 1 times [2020-09-11 15:13:42,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:13:42,617 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729253852] [2020-09-11 15:13:42,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:13:42,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:13:42,674 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 15:13:42,675 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729253852] [2020-09-11 15:13:42,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:13:42,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-11 15:13:42,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587428136] [2020-09-11 15:13:42,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 15:13:42,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:13:42,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 15:13:42,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 15:13:42,677 INFO L87 Difference]: Start difference. First operand 87 states and 180 transitions. Second operand 5 states. [2020-09-11 15:13:42,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:13:42,713 INFO L93 Difference]: Finished difference Result 83 states and 155 transitions. [2020-09-11 15:13:42,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 15:13:42,714 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-09-11 15:13:42,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:13:42,714 INFO L225 Difference]: With dead ends: 83 [2020-09-11 15:13:42,715 INFO L226 Difference]: Without dead ends: 68 [2020-09-11 15:13:42,715 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 15:13:42,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-11 15:13:42,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-09-11 15:13:42,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-11 15:13:42,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 125 transitions. [2020-09-11 15:13:42,718 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 125 transitions. Word has length 15 [2020-09-11 15:13:42,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:13:42,718 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 125 transitions. [2020-09-11 15:13:42,718 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 15:13:42,719 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 125 transitions. [2020-09-11 15:13:42,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-11 15:13:42,719 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:13:42,719 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:13:42,720 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-11 15:13:42,720 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:13:42,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:13:42,720 INFO L82 PathProgramCache]: Analyzing trace with hash -1105925332, now seen corresponding path program 1 times [2020-09-11 15:13:42,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:13:42,721 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390841494] [2020-09-11 15:13:42,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:13:42,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:13:42,787 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 15:13:42,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390841494] [2020-09-11 15:13:42,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:13:42,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-11 15:13:42,788 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695181393] [2020-09-11 15:13:42,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-11 15:13:42,789 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:13:42,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-11 15:13:42,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-11 15:13:42,789 INFO L87 Difference]: Start difference. First operand 68 states and 125 transitions. Second operand 6 states. [2020-09-11 15:13:42,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:13:42,833 INFO L93 Difference]: Finished difference Result 61 states and 109 transitions. [2020-09-11 15:13:42,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-11 15:13:42,834 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-09-11 15:13:42,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:13:42,834 INFO L225 Difference]: With dead ends: 61 [2020-09-11 15:13:42,835 INFO L226 Difference]: Without dead ends: 55 [2020-09-11 15:13:42,835 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 15:13:42,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-11 15:13:42,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-09-11 15:13:42,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-11 15:13:42,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 99 transitions. [2020-09-11 15:13:42,838 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 99 transitions. Word has length 16 [2020-09-11 15:13:42,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:13:42,838 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 99 transitions. [2020-09-11 15:13:42,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-11 15:13:42,838 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 99 transitions. [2020-09-11 15:13:42,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-11 15:13:42,839 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:13:42,839 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 15:13:42,839 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-11 15:13:42,839 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:13:42,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:13:42,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1123595488, now seen corresponding path program 1 times [2020-09-11 15:13:42,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:13:42,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70078800] [2020-09-11 15:13:42,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:13:42,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:13:42,893 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 15:13:42,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70078800] [2020-09-11 15:13:42,894 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:13:42,894 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 15:13:42,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128384328] [2020-09-11 15:13:42,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 15:13:42,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:13:42,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 15:13:42,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 15:13:42,895 INFO L87 Difference]: Start difference. First operand 55 states and 99 transitions. Second operand 4 states. [2020-09-11 15:13:42,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:13:42,907 INFO L93 Difference]: Finished difference Result 54 states and 98 transitions. [2020-09-11 15:13:42,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 15:13:42,907 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-09-11 15:13:42,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:13:42,908 INFO L225 Difference]: With dead ends: 54 [2020-09-11 15:13:42,908 INFO L226 Difference]: Without dead ends: 0 [2020-09-11 15:13:42,908 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 15:13:42,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-11 15:13:42,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-11 15:13:42,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-11 15:13:42,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-11 15:13:42,909 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-09-11 15:13:42,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:13:42,909 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-11 15:13:42,909 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 15:13:42,909 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-11 15:13:42,909 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-11 15:13:42,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-11 15:13:42,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.09 03:13:42 BasicIcfg [2020-09-11 15:13:42,914 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-11 15:13:42,917 INFO L168 Benchmark]: Toolchain (without parser) took 5414.20 ms. Allocated memory was 138.9 MB in the beginning and 250.1 MB in the end (delta: 111.1 MB). Free memory was 100.7 MB in the beginning and 131.6 MB in the end (delta: -30.8 MB). Peak memory consumption was 80.3 MB. Max. memory is 7.1 GB. [2020-09-11 15:13:42,917 INFO L168 Benchmark]: CDTParser took 0.55 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-11 15:13:42,918 INFO L168 Benchmark]: CACSL2BoogieTranslator took 837.80 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 100.1 MB in the beginning and 160.3 MB in the end (delta: -60.2 MB). Peak memory consumption was 27.4 MB. Max. memory is 7.1 GB. [2020-09-11 15:13:42,919 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.14 ms. Allocated memory is still 202.4 MB. Free memory was 160.3 MB in the beginning and 158.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-11 15:13:42,920 INFO L168 Benchmark]: Boogie Preprocessor took 47.14 ms. Allocated memory is still 202.4 MB. Free memory was 158.3 MB in the beginning and 156.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-09-11 15:13:42,921 INFO L168 Benchmark]: RCFGBuilder took 484.01 ms. Allocated memory is still 202.4 MB. Free memory was 156.9 MB in the beginning and 134.6 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-09-11 15:13:42,922 INFO L168 Benchmark]: TraceAbstraction took 3970.27 ms. Allocated memory was 202.4 MB in the beginning and 250.1 MB in the end (delta: 47.7 MB). Free memory was 133.9 MB in the beginning and 131.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 50.1 MB. Max. memory is 7.1 GB. [2020-09-11 15:13:42,926 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.55 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 837.80 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 100.1 MB in the beginning and 160.3 MB in the end (delta: -60.2 MB). Peak memory consumption was 27.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 60.14 ms. Allocated memory is still 202.4 MB. Free memory was 160.3 MB in the beginning and 158.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 47.14 ms. Allocated memory is still 202.4 MB. Free memory was 158.3 MB in the beginning and 156.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 484.01 ms. Allocated memory is still 202.4 MB. Free memory was 156.9 MB in the beginning and 134.6 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3970.27 ms. Allocated memory was 202.4 MB in the beginning and 250.1 MB in the end (delta: 47.7 MB). Free memory was 133.9 MB in the beginning and 131.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 50.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 78 ProgramPointsBefore, 32 ProgramPointsAfterwards, 70 TransitionsBefore, 23 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 14 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 660 VarBasedMoverChecksPositive, 29 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 27 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 2250 CheckedPairsTotal, 55 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.8s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 187 SDtfs, 267 SDslu, 361 SDs, 0 SdLazy, 212 SolverSat, 45 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 53 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 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, 10 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 118 ConstructedInterpolants, 0 QuantifiedInterpolants, 5172 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...