/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe013_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-60655ea [2020-09-15 23:39:01,514 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-15 23:39:01,518 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-15 23:39:01,544 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-15 23:39:01,544 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-15 23:39:01,545 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-15 23:39:01,547 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-15 23:39:01,549 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-15 23:39:01,551 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-15 23:39:01,552 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-15 23:39:01,553 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-15 23:39:01,554 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-15 23:39:01,554 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-15 23:39:01,555 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-15 23:39:01,557 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-15 23:39:01,558 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-15 23:39:01,559 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-15 23:39:01,560 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-15 23:39:01,562 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-15 23:39:01,564 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-15 23:39:01,565 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-15 23:39:01,566 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-15 23:39:01,568 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-15 23:39:01,569 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-15 23:39:01,571 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-15 23:39:01,571 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-15 23:39:01,572 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-15 23:39:01,573 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-15 23:39:01,573 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-15 23:39:01,574 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-15 23:39:01,574 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-15 23:39:01,575 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-15 23:39:01,576 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-15 23:39:01,577 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-15 23:39:01,578 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-15 23:39:01,578 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-15 23:39:01,579 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-15 23:39:01,579 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-15 23:39:01,580 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-15 23:39:01,581 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-15 23:39:01,581 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-15 23:39:01,582 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-09-15 23:39:01,610 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-15 23:39:01,610 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-15 23:39:01,611 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-15 23:39:01,612 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-15 23:39:01,612 INFO L138 SettingsManager]: * Use SBE=true [2020-09-15 23:39:01,612 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-15 23:39:01,612 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-15 23:39:01,613 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-15 23:39:01,613 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-15 23:39:01,613 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-15 23:39:01,613 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-15 23:39:01,613 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-15 23:39:01,613 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-15 23:39:01,614 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-15 23:39:01,614 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-15 23:39:01,614 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-15 23:39:01,614 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-15 23:39:01,614 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-15 23:39:01,615 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-15 23:39:01,615 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-15 23:39:01,615 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-15 23:39:01,615 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-15 23:39:01,615 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-15 23:39:01,616 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-15 23:39:01,616 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-15 23:39:01,616 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-15 23:39:01,616 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-15 23:39:01,616 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-15 23:39:01,617 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-15 23:39:01,617 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-15 23:39:01,617 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-15 23:39:02,058 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-15 23:39:02,085 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-15 23:39:02,089 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-15 23:39:02,091 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-15 23:39:02,091 INFO L275 PluginConnector]: CDTParser initialized [2020-09-15 23:39:02,094 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe013_tso.oepc.i [2020-09-15 23:39:02,173 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8903c0533/61c4ead9627c4f389b54c7424b2f3c38/FLAG774e098de [2020-09-15 23:39:02,863 INFO L306 CDTParser]: Found 1 translation units. [2020-09-15 23:39:02,864 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe013_tso.oepc.i [2020-09-15 23:39:02,881 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8903c0533/61c4ead9627c4f389b54c7424b2f3c38/FLAG774e098de [2020-09-15 23:39:03,100 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8903c0533/61c4ead9627c4f389b54c7424b2f3c38 [2020-09-15 23:39:03,116 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-15 23:39:03,125 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-15 23:39:03,127 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-15 23:39:03,128 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-15 23:39:03,132 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-15 23:39:03,134 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 11:39:03" (1/1) ... [2020-09-15 23:39:03,139 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@db70816 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:39:03, skipping insertion in model container [2020-09-15 23:39:03,139 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 11:39:03" (1/1) ... [2020-09-15 23:39:03,150 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-15 23:39:03,222 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-15 23:39:03,796 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-15 23:39:03,822 INFO L203 MainTranslator]: Completed pre-run [2020-09-15 23:39:03,919 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-15 23:39:04,002 INFO L208 MainTranslator]: Completed translation [2020-09-15 23:39:04,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:39:04 WrapperNode [2020-09-15 23:39:04,003 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-15 23:39:04,004 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-15 23:39:04,004 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-15 23:39:04,004 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-15 23:39:04,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:39:04" (1/1) ... [2020-09-15 23:39:04,036 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:39:04" (1/1) ... [2020-09-15 23:39:04,062 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-15 23:39:04,063 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-15 23:39:04,063 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-15 23:39:04,063 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-15 23:39:04,076 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:39:04" (1/1) ... [2020-09-15 23:39:04,076 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:39:04" (1/1) ... [2020-09-15 23:39:04,079 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:39:04" (1/1) ... [2020-09-15 23:39:04,080 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:39:04" (1/1) ... [2020-09-15 23:39:04,087 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:39:04" (1/1) ... [2020-09-15 23:39:04,091 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:39:04" (1/1) ... [2020-09-15 23:39:04,093 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:39:04" (1/1) ... [2020-09-15 23:39:04,097 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-15 23:39:04,098 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-15 23:39:04,098 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-15 23:39:04,098 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-15 23:39:04,099 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:39:04" (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 [2020-09-15 23:39:04,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-15 23:39:04,198 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-15 23:39:04,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-15 23:39:04,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-15 23:39:04,198 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-15 23:39:04,198 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-15 23:39:04,199 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-15 23:39:04,199 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-15 23:39:04,199 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-15 23:39:04,199 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-15 23:39:04,199 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-15 23:39:04,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-15 23:39:04,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-15 23:39:04,202 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-15 23:39:04,589 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-15 23:39:04,589 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-15 23:39:04,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 11:39:04 BoogieIcfgContainer [2020-09-15 23:39:04,595 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-15 23:39:04,596 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-15 23:39:04,597 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-15 23:39:04,608 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-15 23:39:04,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 11:39:03" (1/3) ... [2020-09-15 23:39:04,609 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79c35621 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 11:39:04, skipping insertion in model container [2020-09-15 23:39:04,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:39:04" (2/3) ... [2020-09-15 23:39:04,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79c35621 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 11:39:04, skipping insertion in model container [2020-09-15 23:39:04,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 11:39:04" (3/3) ... [2020-09-15 23:39:04,616 INFO L109 eAbstractionObserver]: Analyzing ICFG safe013_tso.oepc.i [2020-09-15 23:39:04,638 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-15 23:39:04,639 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-15 23:39:04,650 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-15 23:39:04,652 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-15 23:39:04,685 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:39:04,686 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:39:04,686 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:39:04,686 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:39:04,687 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:39:04,687 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:39:04,688 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:39:04,688 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:39:04,689 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:39:04,689 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:39:04,689 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:39:04,689 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:39:04,690 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:39:04,690 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:39:04,690 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:39:04,691 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:39:04,691 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:39:04,691 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:39:04,696 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:39:04,697 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:39:04,697 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:39:04,697 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:39:04,705 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:39:04,705 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:39:04,706 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:39:04,706 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:39:04,709 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:39:04,709 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:39:04,709 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:39:04,710 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:39:04,735 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-15 23:39:04,764 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-15 23:39:04,764 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-15 23:39:04,765 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-15 23:39:04,765 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-15 23:39:04,765 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-15 23:39:04,765 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-15 23:39:04,765 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-15 23:39:04,766 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-15 23:39:04,785 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-09-15 23:39:04,788 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-15 23:39:04,841 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-15 23:39:04,841 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-15 23:39:04,847 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 51 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. [2020-09-15 23:39:04,850 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-15 23:39:04,874 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-15 23:39:04,874 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-15 23:39:04,875 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 51 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. [2020-09-15 23:39:04,877 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-15 23:39:04,883 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-15 23:39:06,489 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 41 [2020-09-15 23:39:06,694 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2190 [2020-09-15 23:39:06,695 INFO L214 etLargeBlockEncoding]: Total number of compositions: 58 [2020-09-15 23:39:06,699 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-09-15 23:39:06,729 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-09-15 23:39:06,731 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-09-15 23:39:06,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-15 23:39:06,741 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:39:06,742 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:39:06,743 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:39:06,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:39:06,751 INFO L82 PathProgramCache]: Analyzing trace with hash -1620259193, now seen corresponding path program 1 times [2020-09-15 23:39:06,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:39:06,774 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051111604] [2020-09-15 23:39:06,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:39:06,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:39:07,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 23:39:07,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051111604] [2020-09-15 23:39:07,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:39:07,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-15 23:39:07,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1227816143] [2020-09-15 23:39:07,048 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:39:07,052 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:39:07,073 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-15 23:39:07,073 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:39:07,076 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 23:39:07,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-15 23:39:07,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:39:07,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-15 23:39:07,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 23:39:07,099 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-09-15 23:39:07,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:39:07,146 INFO L93 Difference]: Finished difference Result 290 states and 834 transitions. [2020-09-15 23:39:07,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-15 23:39:07,148 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-15 23:39:07,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:39:07,167 INFO L225 Difference]: With dead ends: 290 [2020-09-15 23:39:07,168 INFO L226 Difference]: Without dead ends: 226 [2020-09-15 23:39:07,170 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 23:39:07,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-09-15 23:39:07,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-09-15 23:39:07,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-09-15 23:39:07,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 626 transitions. [2020-09-15 23:39:07,252 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 626 transitions. Word has length 8 [2020-09-15 23:39:07,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:39:07,254 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 626 transitions. [2020-09-15 23:39:07,254 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-15 23:39:07,254 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 626 transitions. [2020-09-15 23:39:07,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-15 23:39:07,256 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:39:07,256 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:39:07,256 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-15 23:39:07,256 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:39:07,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:39:07,257 INFO L82 PathProgramCache]: Analyzing trace with hash -1042338189, now seen corresponding path program 1 times [2020-09-15 23:39:07,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:39:07,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944729361] [2020-09-15 23:39:07,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:39:07,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:39:07,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 23:39:07,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944729361] [2020-09-15 23:39:07,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:39:07,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-15 23:39:07,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2010113544] [2020-09-15 23:39:07,352 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:39:07,354 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:39:07,359 INFO L274 McrAutomatonBuilder]: Finished intersection with 15 states and 19 transitions. [2020-09-15 23:39:07,359 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:39:07,413 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 23:39:07,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-15 23:39:07,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:39:07,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-15 23:39:07,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 23:39:07,416 INFO L87 Difference]: Start difference. First operand 226 states and 626 transitions. Second operand 3 states. [2020-09-15 23:39:07,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:39:07,426 INFO L93 Difference]: Finished difference Result 214 states and 585 transitions. [2020-09-15 23:39:07,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-15 23:39:07,427 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-09-15 23:39:07,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:39:07,430 INFO L225 Difference]: With dead ends: 214 [2020-09-15 23:39:07,430 INFO L226 Difference]: Without dead ends: 214 [2020-09-15 23:39:07,432 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 23:39:07,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-09-15 23:39:07,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2020-09-15 23:39:07,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-09-15 23:39:07,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 585 transitions. [2020-09-15 23:39:07,456 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 585 transitions. Word has length 9 [2020-09-15 23:39:07,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:39:07,457 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 585 transitions. [2020-09-15 23:39:07,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-15 23:39:07,457 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 585 transitions. [2020-09-15 23:39:07,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-15 23:39:07,459 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:39:07,459 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:39:07,459 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-15 23:39:07,459 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:39:07,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:39:07,460 INFO L82 PathProgramCache]: Analyzing trace with hash 2047253273, now seen corresponding path program 1 times [2020-09-15 23:39:07,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:39:07,461 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836393498] [2020-09-15 23:39:07,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:39:07,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:39:07,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 23:39:07,600 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836393498] [2020-09-15 23:39:07,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:39:07,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-15 23:39:07,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1612570039] [2020-09-15 23:39:07,602 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:39:07,603 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:39:07,605 INFO L274 McrAutomatonBuilder]: Finished intersection with 19 states and 27 transitions. [2020-09-15 23:39:07,606 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:39:07,659 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 23:39:07,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-15 23:39:07,660 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:39:07,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-15 23:39:07,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-15 23:39:07,661 INFO L87 Difference]: Start difference. First operand 214 states and 585 transitions. Second operand 4 states. [2020-09-15 23:39:07,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:39:07,689 INFO L93 Difference]: Finished difference Result 240 states and 627 transitions. [2020-09-15 23:39:07,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-15 23:39:07,689 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-09-15 23:39:07,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:39:07,691 INFO L225 Difference]: With dead ends: 240 [2020-09-15 23:39:07,692 INFO L226 Difference]: Without dead ends: 144 [2020-09-15 23:39:07,692 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-15 23:39:07,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-09-15 23:39:07,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-09-15 23:39:07,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-09-15 23:39:07,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 355 transitions. [2020-09-15 23:39:07,705 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 355 transitions. Word has length 10 [2020-09-15 23:39:07,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:39:07,705 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 355 transitions. [2020-09-15 23:39:07,705 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-15 23:39:07,705 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 355 transitions. [2020-09-15 23:39:07,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-15 23:39:07,707 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:39:07,707 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:39:07,707 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-15 23:39:07,707 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:39:07,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:39:07,708 INFO L82 PathProgramCache]: Analyzing trace with hash 315672505, now seen corresponding path program 1 times [2020-09-15 23:39:07,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:39:07,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112524175] [2020-09-15 23:39:07,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:39:07,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:39:07,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 23:39:07,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112524175] [2020-09-15 23:39:07,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:39:07,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-15 23:39:07,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [395187072] [2020-09-15 23:39:07,813 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:39:07,814 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:39:07,818 INFO L274 McrAutomatonBuilder]: Finished intersection with 35 states and 63 transitions. [2020-09-15 23:39:07,818 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:39:07,848 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-15 23:39:07,883 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-15 23:39:07,901 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-15 23:39:07,922 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-15 23:39:07,941 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-15 23:39:07,993 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-15 23:39:08,046 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-15 23:39:08,106 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2605#(not (= 3 ~__unbuffered_cnt~0))] [2020-09-15 23:39:08,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 23:39:08,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:39:08,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 23:39:08,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 23:39:08,108 INFO L87 Difference]: Start difference. First operand 144 states and 355 transitions. Second operand 5 states. [2020-09-15 23:39:08,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:39:08,173 INFO L93 Difference]: Finished difference Result 137 states and 312 transitions. [2020-09-15 23:39:08,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-15 23:39:08,174 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-09-15 23:39:08,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:39:08,175 INFO L225 Difference]: With dead ends: 137 [2020-09-15 23:39:08,175 INFO L226 Difference]: Without dead ends: 97 [2020-09-15 23:39:08,176 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-15 23:39:08,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-09-15 23:39:08,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-09-15 23:39:08,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-09-15 23:39:08,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 202 transitions. [2020-09-15 23:39:08,182 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 202 transitions. Word has length 12 [2020-09-15 23:39:08,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:39:08,183 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 202 transitions. [2020-09-15 23:39:08,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 23:39:08,183 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 202 transitions. [2020-09-15 23:39:08,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-15 23:39:08,185 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:39:08,185 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:39:08,185 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-15 23:39:08,185 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:39:08,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:39:08,186 INFO L82 PathProgramCache]: Analyzing trace with hash -1634628682, now seen corresponding path program 1 times [2020-09-15 23:39:08,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:39:08,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620242800] [2020-09-15 23:39:08,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:39:08,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:39:08,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 23:39:08,259 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620242800] [2020-09-15 23:39:08,259 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:39:08,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-15 23:39:08,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [606490464] [2020-09-15 23:39:08,260 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:39:08,264 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:39:08,267 INFO L274 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-09-15 23:39:08,267 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:39:08,271 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 23:39:08,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-15 23:39:08,272 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:39:08,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-15 23:39:08,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 23:39:08,273 INFO L87 Difference]: Start difference. First operand 97 states and 202 transitions. Second operand 3 states. [2020-09-15 23:39:08,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:39:08,284 INFO L93 Difference]: Finished difference Result 115 states and 230 transitions. [2020-09-15 23:39:08,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-15 23:39:08,284 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-09-15 23:39:08,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:39:08,285 INFO L225 Difference]: With dead ends: 115 [2020-09-15 23:39:08,286 INFO L226 Difference]: Without dead ends: 98 [2020-09-15 23:39:08,286 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 23:39:08,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-09-15 23:39:08,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2020-09-15 23:39:08,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-09-15 23:39:08,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 193 transitions. [2020-09-15 23:39:08,292 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 193 transitions. Word has length 14 [2020-09-15 23:39:08,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:39:08,293 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 193 transitions. [2020-09-15 23:39:08,293 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-15 23:39:08,293 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 193 transitions. [2020-09-15 23:39:08,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-15 23:39:08,294 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:39:08,295 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:39:08,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-15 23:39:08,295 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:39:08,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:39:08,296 INFO L82 PathProgramCache]: Analyzing trace with hash 1887879687, now seen corresponding path program 1 times [2020-09-15 23:39:08,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:39:08,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753188976] [2020-09-15 23:39:08,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:39:08,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:39:08,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 23:39:08,389 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753188976] [2020-09-15 23:39:08,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:39:08,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-15 23:39:08,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1028338298] [2020-09-15 23:39:08,390 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:39:08,392 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:39:08,400 INFO L274 McrAutomatonBuilder]: Finished intersection with 43 states and 73 transitions. [2020-09-15 23:39:08,401 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:39:08,427 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-15 23:39:08,631 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [3257#(not (= 3 ~__unbuffered_cnt~0)), 3258#(not (= ~__unbuffered_cnt~0 2)), 3259#(not (= ~__unbuffered_cnt~0 1)), 3260#(<= ~__unbuffered_cnt~0 0)] [2020-09-15 23:39:08,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-15 23:39:08,632 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:39:08,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-15 23:39:08,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-09-15 23:39:08,633 INFO L87 Difference]: Start difference. First operand 96 states and 193 transitions. Second operand 10 states. [2020-09-15 23:39:08,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:39:08,706 INFO L93 Difference]: Finished difference Result 92 states and 183 transitions. [2020-09-15 23:39:08,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-15 23:39:08,707 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2020-09-15 23:39:08,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:39:08,708 INFO L225 Difference]: With dead ends: 92 [2020-09-15 23:39:08,708 INFO L226 Difference]: Without dead ends: 36 [2020-09-15 23:39:08,708 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-09-15 23:39:08,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-09-15 23:39:08,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-09-15 23:39:08,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-15 23:39:08,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-09-15 23:39:08,711 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2020-09-15 23:39:08,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:39:08,712 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-09-15 23:39:08,712 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-15 23:39:08,712 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-09-15 23:39:08,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-15 23:39:08,713 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:39:08,713 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:39:08,713 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-15 23:39:08,713 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:39:08,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:39:08,714 INFO L82 PathProgramCache]: Analyzing trace with hash -1759545272, now seen corresponding path program 1 times [2020-09-15 23:39:08,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:39:08,714 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962472667] [2020-09-15 23:39:08,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:39:08,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:39:08,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 23:39:08,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962472667] [2020-09-15 23:39:08,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:39:08,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 23:39:08,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [343881134] [2020-09-15 23:39:08,769 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:39:08,771 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:39:08,781 INFO L274 McrAutomatonBuilder]: Finished intersection with 59 states and 108 transitions. [2020-09-15 23:39:08,781 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:39:08,812 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 23:39:08,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-15 23:39:08,813 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:39:08,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-15 23:39:08,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-15 23:39:08,814 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 4 states. [2020-09-15 23:39:08,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:39:08,826 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-09-15 23:39:08,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-15 23:39:08,826 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-15 23:39:08,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:39:08,827 INFO L225 Difference]: With dead ends: 35 [2020-09-15 23:39:08,827 INFO L226 Difference]: Without dead ends: 0 [2020-09-15 23:39:08,828 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-15 23:39:08,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-15 23:39:08,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-15 23:39:08,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-15 23:39:08,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-15 23:39:08,829 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-09-15 23:39:08,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:39:08,829 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-15 23:39:08,829 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-15 23:39:08,829 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-15 23:39:08,830 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-15 23:39:08,830 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-15 23:39:08,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.09 11:39:08 BasicIcfg [2020-09-15 23:39:08,835 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-15 23:39:08,837 INFO L168 Benchmark]: Toolchain (without parser) took 5718.72 ms. Allocated memory was 140.0 MB in the beginning and 247.5 MB in the end (delta: 107.5 MB). Free memory was 101.4 MB in the beginning and 107.5 MB in the end (delta: -6.2 MB). Peak memory consumption was 101.3 MB. Max. memory is 7.1 GB. [2020-09-15 23:39:08,839 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 140.0 MB. Free memory was 121.6 MB in the beginning and 121.1 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-09-15 23:39:08,840 INFO L168 Benchmark]: CACSL2BoogieTranslator took 875.97 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 100.9 MB in the beginning and 158.1 MB in the end (delta: -57.2 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. [2020-09-15 23:39:08,840 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.67 ms. Allocated memory is still 203.4 MB. Free memory was 158.1 MB in the beginning and 156.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-15 23:39:08,841 INFO L168 Benchmark]: Boogie Preprocessor took 34.56 ms. Allocated memory is still 203.4 MB. Free memory was 156.1 MB in the beginning and 154.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-09-15 23:39:08,842 INFO L168 Benchmark]: RCFGBuilder took 497.21 ms. Allocated memory is still 203.4 MB. Free memory was 154.2 MB in the beginning and 132.2 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-09-15 23:39:08,843 INFO L168 Benchmark]: TraceAbstraction took 4238.78 ms. Allocated memory was 203.4 MB in the beginning and 247.5 MB in the end (delta: 44.0 MB). Free memory was 131.3 MB in the beginning and 107.5 MB in the end (delta: 23.7 MB). Peak memory consumption was 67.8 MB. Max. memory is 7.1 GB. [2020-09-15 23:39:08,847 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 140.0 MB. Free memory was 121.6 MB in the beginning and 121.1 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 875.97 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 100.9 MB in the beginning and 158.1 MB in the end (delta: -57.2 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 58.67 ms. Allocated memory is still 203.4 MB. Free memory was 158.1 MB in the beginning and 156.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 34.56 ms. Allocated memory is still 203.4 MB. Free memory was 156.1 MB in the beginning and 154.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 497.21 ms. Allocated memory is still 203.4 MB. Free memory was 154.2 MB in the beginning and 132.2 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4238.78 ms. Allocated memory was 203.4 MB in the beginning and 247.5 MB in the end (delta: 44.0 MB). Free memory was 131.3 MB in the beginning and 107.5 MB in the end (delta: 23.7 MB). Peak memory consumption was 67.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.9s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 21 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 14 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 650 VarBasedMoverChecksPositive, 21 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2190 CheckedPairsTotal, 58 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.0s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 126 SDtfs, 105 SDslu, 172 SDs, 0 SdLazy, 99 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 132 GetRequests, 104 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 85 NumberOfCodeBlocks, 85 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 2644 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...