/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/safe010_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-60655ea [2020-09-15 23:20:06,514 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-15 23:20:06,518 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-15 23:20:06,559 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-15 23:20:06,560 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-15 23:20:06,568 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-15 23:20:06,572 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-15 23:20:06,576 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-15 23:20:06,579 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-15 23:20:06,583 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-15 23:20:06,584 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-15 23:20:06,585 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-15 23:20:06,585 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-15 23:20:06,588 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-15 23:20:06,593 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-15 23:20:06,595 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-15 23:20:06,597 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-15 23:20:06,598 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-15 23:20:06,599 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-15 23:20:06,602 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-15 23:20:06,603 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-15 23:20:06,609 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-15 23:20:06,610 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-15 23:20:06,611 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-15 23:20:06,613 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-15 23:20:06,613 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-15 23:20:06,614 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-15 23:20:06,614 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-15 23:20:06,615 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-15 23:20:06,616 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-15 23:20:06,616 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-15 23:20:06,617 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-15 23:20:06,618 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-15 23:20:06,619 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-15 23:20:06,620 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-15 23:20:06,620 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-15 23:20:06,621 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-15 23:20:06,621 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-15 23:20:06,621 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-15 23:20:06,622 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-15 23:20:06,623 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-15 23:20:06,624 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 23:20:06,650 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-15 23:20:06,650 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-15 23:20:06,652 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-15 23:20:06,652 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-15 23:20:06,652 INFO L138 SettingsManager]: * Use SBE=true [2020-09-15 23:20:06,653 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-15 23:20:06,653 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-15 23:20:06,653 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-15 23:20:06,653 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-15 23:20:06,653 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-15 23:20:06,654 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-15 23:20:06,654 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-15 23:20:06,654 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-15 23:20:06,654 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-15 23:20:06,654 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-15 23:20:06,655 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-15 23:20:06,655 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-15 23:20:06,655 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-15 23:20:06,655 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-15 23:20:06,655 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-15 23:20:06,656 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-15 23:20:06,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-15 23:20:06,656 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-15 23:20:06,656 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-15 23:20:06,656 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-15 23:20:06,657 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-15 23:20:06,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-15 23:20:06,657 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-15 23:20:06,657 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-15 23:20:06,657 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-15 23:20:06,658 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-15 23:20:07,114 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-15 23:20:07,134 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-15 23:20:07,138 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-15 23:20:07,140 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-15 23:20:07,141 INFO L275 PluginConnector]: CDTParser initialized [2020-09-15 23:20:07,143 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe010_tso.oepc.i [2020-09-15 23:20:07,223 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/59e09611b/c0d3126969ac49e8af71c4f267d5cbec/FLAG795c24f08 [2020-09-15 23:20:07,890 INFO L306 CDTParser]: Found 1 translation units. [2020-09-15 23:20:07,891 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe010_tso.oepc.i [2020-09-15 23:20:07,909 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/59e09611b/c0d3126969ac49e8af71c4f267d5cbec/FLAG795c24f08 [2020-09-15 23:20:08,099 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/59e09611b/c0d3126969ac49e8af71c4f267d5cbec [2020-09-15 23:20:08,113 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-15 23:20:08,119 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-15 23:20:08,120 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-15 23:20:08,120 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-15 23:20:08,125 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-15 23:20:08,126 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 11:20:08" (1/1) ... [2020-09-15 23:20:08,130 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14382dec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:20:08, skipping insertion in model container [2020-09-15 23:20:08,130 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 11:20:08" (1/1) ... [2020-09-15 23:20:08,140 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-15 23:20:08,210 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-15 23:20:08,779 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-15 23:20:08,797 INFO L203 MainTranslator]: Completed pre-run [2020-09-15 23:20:08,841 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-15 23:20:08,919 INFO L208 MainTranslator]: Completed translation [2020-09-15 23:20:08,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:20:08 WrapperNode [2020-09-15 23:20:08,919 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-15 23:20:08,920 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-15 23:20:08,921 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-15 23:20:08,921 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-15 23:20:08,933 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:20:08" (1/1) ... [2020-09-15 23:20:08,952 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:20:08" (1/1) ... [2020-09-15 23:20:08,982 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-15 23:20:08,982 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-15 23:20:08,982 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-15 23:20:08,982 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-15 23:20:08,993 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:20:08" (1/1) ... [2020-09-15 23:20:08,993 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:20:08" (1/1) ... [2020-09-15 23:20:08,997 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:20:08" (1/1) ... [2020-09-15 23:20:08,997 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:20:08" (1/1) ... [2020-09-15 23:20:09,008 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:20:08" (1/1) ... [2020-09-15 23:20:09,011 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:20:08" (1/1) ... [2020-09-15 23:20:09,014 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:20:08" (1/1) ... [2020-09-15 23:20:09,017 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-15 23:20:09,020 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-15 23:20:09,020 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-15 23:20:09,020 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-15 23:20:09,022 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:20:08" (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 23:20:09,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-15 23:20:09,104 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-15 23:20:09,104 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-15 23:20:09,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-15 23:20:09,105 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-15 23:20:09,105 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-15 23:20:09,105 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-15 23:20:09,105 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-15 23:20:09,106 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-15 23:20:09,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-15 23:20:09,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-15 23:20:09,108 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 23:20:09,511 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-15 23:20:09,511 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-15 23:20:09,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 11:20:09 BoogieIcfgContainer [2020-09-15 23:20:09,517 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-15 23:20:09,518 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-15 23:20:09,518 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-15 23:20:09,522 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-15 23:20:09,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 11:20:08" (1/3) ... [2020-09-15 23:20:09,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d82dd6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 11:20:09, skipping insertion in model container [2020-09-15 23:20:09,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:20:08" (2/3) ... [2020-09-15 23:20:09,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d82dd6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 11:20:09, skipping insertion in model container [2020-09-15 23:20:09,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 11:20:09" (3/3) ... [2020-09-15 23:20:09,526 INFO L109 eAbstractionObserver]: Analyzing ICFG safe010_tso.oepc.i [2020-09-15 23:20:09,538 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-15 23:20:09,539 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-15 23:20:09,549 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-15 23:20:09,550 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-15 23:20:09,578 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:20:09,578 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:20:09,578 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:20:09,579 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:20:09,579 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:20:09,579 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:20:09,580 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:20:09,580 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:20:09,580 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:20:09,581 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:20:09,581 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:20:09,581 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:20:09,586 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:20:09,586 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:20:09,587 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:20:09,587 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:20:09,597 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:20:09,597 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:20:09,597 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:20:09,598 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:20:09,621 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-09-15 23:20:09,645 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-15 23:20:09,646 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-15 23:20:09,646 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-15 23:20:09,646 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-15 23:20:09,646 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-15 23:20:09,646 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-15 23:20:09,647 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-15 23:20:09,647 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-15 23:20:09,665 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 60 places, 55 transitions, 120 flow [2020-09-15 23:20:09,667 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 60 places, 55 transitions, 120 flow [2020-09-15 23:20:09,722 INFO L129 PetriNetUnfolder]: 2/53 cut-off events. [2020-09-15 23:20:09,723 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-15 23:20:09,730 INFO L80 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 53 events. 2/53 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 37 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-09-15 23:20:09,735 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 60 places, 55 transitions, 120 flow [2020-09-15 23:20:09,763 INFO L129 PetriNetUnfolder]: 2/53 cut-off events. [2020-09-15 23:20:09,764 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-15 23:20:09,764 INFO L80 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 53 events. 2/53 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 37 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-09-15 23:20:09,766 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 672 [2020-09-15 23:20:09,767 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-15 23:20:11,029 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1251 [2020-09-15 23:20:11,029 INFO L214 etLargeBlockEncoding]: Total number of compositions: 49 [2020-09-15 23:20:11,035 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 15 transitions, 40 flow [2020-09-15 23:20:11,051 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 74 states. [2020-09-15 23:20:11,054 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-09-15 23:20:11,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-09-15 23:20:11,063 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:20:11,064 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-09-15 23:20:11,064 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:20:11,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:20:11,072 INFO L82 PathProgramCache]: Analyzing trace with hash 1814584925, now seen corresponding path program 1 times [2020-09-15 23:20:11,095 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:20:11,095 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741940231] [2020-09-15 23:20:11,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:20:11,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:20:11,355 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 23:20:11,356 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741940231] [2020-09-15 23:20:11,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:20:11,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-15 23:20:11,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [740360499] [2020-09-15 23:20:11,360 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:20:11,363 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:20:11,395 INFO L274 McrAutomatonBuilder]: Finished intersection with 7 states and 6 transitions. [2020-09-15 23:20:11,395 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:20:11,398 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 23:20:11,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-15 23:20:11,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:20:11,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-15 23:20:11,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 23:20:11,421 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 3 states. [2020-09-15 23:20:11,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:20:11,453 INFO L93 Difference]: Finished difference Result 72 states and 154 transitions. [2020-09-15 23:20:11,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-15 23:20:11,456 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-09-15 23:20:11,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:20:11,469 INFO L225 Difference]: With dead ends: 72 [2020-09-15 23:20:11,470 INFO L226 Difference]: Without dead ends: 56 [2020-09-15 23:20:11,472 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 23:20:11,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-09-15 23:20:11,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-09-15 23:20:11,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-09-15 23:20:11,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 114 transitions. [2020-09-15 23:20:11,527 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 114 transitions. Word has length 6 [2020-09-15 23:20:11,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:20:11,528 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 114 transitions. [2020-09-15 23:20:11,528 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-15 23:20:11,528 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 114 transitions. [2020-09-15 23:20:11,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-09-15 23:20:11,529 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:20:11,529 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:20:11,530 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-15 23:20:11,530 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:20:11,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:20:11,531 INFO L82 PathProgramCache]: Analyzing trace with hash 417556795, now seen corresponding path program 1 times [2020-09-15 23:20:11,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:20:11,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072501988] [2020-09-15 23:20:11,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:20:11,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:20:11,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 23:20:11,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072501988] [2020-09-15 23:20:11,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:20:11,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-15 23:20:11,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1146167965] [2020-09-15 23:20:11,608 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:20:11,609 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:20:11,612 INFO L274 McrAutomatonBuilder]: Finished intersection with 11 states and 13 transitions. [2020-09-15 23:20:11,612 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:20:11,645 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 23:20:11,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-15 23:20:11,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:20:11,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-15 23:20:11,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 23:20:11,648 INFO L87 Difference]: Start difference. First operand 56 states and 114 transitions. Second operand 3 states. [2020-09-15 23:20:11,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:20:11,657 INFO L93 Difference]: Finished difference Result 53 states and 106 transitions. [2020-09-15 23:20:11,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-15 23:20:11,658 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-09-15 23:20:11,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:20:11,659 INFO L225 Difference]: With dead ends: 53 [2020-09-15 23:20:11,659 INFO L226 Difference]: Without dead ends: 53 [2020-09-15 23:20:11,660 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 23:20:11,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-09-15 23:20:11,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-09-15 23:20:11,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-15 23:20:11,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 106 transitions. [2020-09-15 23:20:11,671 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 106 transitions. Word has length 7 [2020-09-15 23:20:11,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:20:11,671 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 106 transitions. [2020-09-15 23:20:11,671 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-15 23:20:11,671 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 106 transitions. [2020-09-15 23:20:11,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-15 23:20:11,672 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:20:11,672 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:20:11,672 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-15 23:20:11,673 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:20:11,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:20:11,673 INFO L82 PathProgramCache]: Analyzing trace with hash 58787852, now seen corresponding path program 1 times [2020-09-15 23:20:11,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:20:11,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382801299] [2020-09-15 23:20:11,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:20:11,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:20:11,798 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 23:20:11,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382801299] [2020-09-15 23:20:11,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:20:11,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-15 23:20:11,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1291201518] [2020-09-15 23:20:11,799 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:20:11,800 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:20:11,803 INFO L274 McrAutomatonBuilder]: Finished intersection with 15 states and 21 transitions. [2020-09-15 23:20:11,803 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:20:11,842 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 23:20:11,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-15 23:20:11,843 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:20:11,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-15 23:20:11,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-15 23:20:11,844 INFO L87 Difference]: Start difference. First operand 53 states and 106 transitions. Second operand 4 states. [2020-09-15 23:20:11,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:20:11,867 INFO L93 Difference]: Finished difference Result 60 states and 113 transitions. [2020-09-15 23:20:11,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-15 23:20:11,868 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-09-15 23:20:11,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:20:11,869 INFO L225 Difference]: With dead ends: 60 [2020-09-15 23:20:11,869 INFO L226 Difference]: Without dead ends: 36 [2020-09-15 23:20:11,869 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-15 23:20:11,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-09-15 23:20:11,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-09-15 23:20:11,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-15 23:20:11,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 63 transitions. [2020-09-15 23:20:11,875 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 63 transitions. Word has length 8 [2020-09-15 23:20:11,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:20:11,875 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 63 transitions. [2020-09-15 23:20:11,876 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-15 23:20:11,876 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 63 transitions. [2020-09-15 23:20:11,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-15 23:20:11,876 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:20:11,877 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:20:11,877 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-15 23:20:11,877 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:20:11,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:20:11,877 INFO L82 PathProgramCache]: Analyzing trace with hash 1840071362, now seen corresponding path program 1 times [2020-09-15 23:20:11,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:20:11,878 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885832523] [2020-09-15 23:20:11,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:20:11,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:20:11,991 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 23:20:11,991 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885832523] [2020-09-15 23:20:11,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:20:11,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-15 23:20:11,992 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [161327027] [2020-09-15 23:20:11,992 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:20:11,993 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:20:11,995 INFO L274 McrAutomatonBuilder]: Finished intersection with 17 states and 23 transitions. [2020-09-15 23:20:11,995 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:20:12,024 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-15 23:20:12,053 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-15 23:20:12,074 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-15 23:20:12,114 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [702#(not (= 2 ~__unbuffered_cnt~0))] [2020-09-15 23:20:12,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 23:20:12,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:20:12,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 23:20:12,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 23:20:12,115 INFO L87 Difference]: Start difference. First operand 36 states and 63 transitions. Second operand 5 states. [2020-09-15 23:20:12,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:20:12,161 INFO L93 Difference]: Finished difference Result 32 states and 51 transitions. [2020-09-15 23:20:12,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-15 23:20:12,161 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-09-15 23:20:12,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:20:12,162 INFO L225 Difference]: With dead ends: 32 [2020-09-15 23:20:12,162 INFO L226 Difference]: Without dead ends: 22 [2020-09-15 23:20:12,162 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-15 23:20:12,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-09-15 23:20:12,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-09-15 23:20:12,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-09-15 23:20:12,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 30 transitions. [2020-09-15 23:20:12,166 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 30 transitions. Word has length 9 [2020-09-15 23:20:12,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:20:12,166 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 30 transitions. [2020-09-15 23:20:12,166 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 23:20:12,167 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 30 transitions. [2020-09-15 23:20:12,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-15 23:20:12,167 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:20:12,167 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:20:12,168 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-15 23:20:12,168 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:20:12,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:20:12,168 INFO L82 PathProgramCache]: Analyzing trace with hash -830614075, now seen corresponding path program 1 times [2020-09-15 23:20:12,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:20:12,169 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256958459] [2020-09-15 23:20:12,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:20:12,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:20:12,217 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 23:20:12,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256958459] [2020-09-15 23:20:12,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:20:12,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-15 23:20:12,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1533380328] [2020-09-15 23:20:12,219 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:20:12,220 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:20:12,222 INFO L274 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-09-15 23:20:12,223 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:20:12,227 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 23:20:12,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-15 23:20:12,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:20:12,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-15 23:20:12,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 23:20:12,228 INFO L87 Difference]: Start difference. First operand 22 states and 30 transitions. Second operand 3 states. [2020-09-15 23:20:12,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:20:12,233 INFO L93 Difference]: Finished difference Result 21 states and 29 transitions. [2020-09-15 23:20:12,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-15 23:20:12,234 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-09-15 23:20:12,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:20:12,234 INFO L225 Difference]: With dead ends: 21 [2020-09-15 23:20:12,234 INFO L226 Difference]: Without dead ends: 0 [2020-09-15 23:20:12,235 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 23:20:12,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-15 23:20:12,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-15 23:20:12,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-15 23:20:12,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-15 23:20:12,236 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-09-15 23:20:12,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:20:12,236 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-15 23:20:12,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-15 23:20:12,236 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-15 23:20:12,237 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-15 23:20:12,237 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-15 23:20:12,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.09 11:20:12 BasicIcfg [2020-09-15 23:20:12,242 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-15 23:20:12,245 INFO L168 Benchmark]: Toolchain (without parser) took 4128.90 ms. Allocated memory was 140.5 MB in the beginning and 247.5 MB in the end (delta: 107.0 MB). Free memory was 100.6 MB in the beginning and 153.1 MB in the end (delta: -52.5 MB). Peak memory consumption was 54.4 MB. Max. memory is 7.1 GB. [2020-09-15 23:20:12,246 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-15 23:20:12,247 INFO L168 Benchmark]: CACSL2BoogieTranslator took 799.93 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 99.9 MB in the beginning and 162.6 MB in the end (delta: -62.7 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. [2020-09-15 23:20:12,248 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.47 ms. Allocated memory is still 203.9 MB. Free memory was 162.6 MB in the beginning and 160.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-09-15 23:20:12,249 INFO L168 Benchmark]: Boogie Preprocessor took 35.34 ms. Allocated memory is still 203.9 MB. Free memory was 160.0 MB in the beginning and 158.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-15 23:20:12,250 INFO L168 Benchmark]: RCFGBuilder took 496.78 ms. Allocated memory is still 203.9 MB. Free memory was 158.7 MB in the beginning and 139.0 MB in the end (delta: 19.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. [2020-09-15 23:20:12,251 INFO L168 Benchmark]: TraceAbstraction took 2723.86 ms. Allocated memory was 203.9 MB in the beginning and 247.5 MB in the end (delta: 43.5 MB). Free memory was 138.4 MB in the beginning and 153.1 MB in the end (delta: -14.7 MB). Peak memory consumption was 28.8 MB. Max. memory is 7.1 GB. [2020-09-15 23:20:12,255 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 799.93 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 99.9 MB in the beginning and 162.6 MB in the end (delta: -62.7 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 61.47 ms. Allocated memory is still 203.9 MB. Free memory was 162.6 MB in the beginning and 160.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 35.34 ms. Allocated memory is still 203.9 MB. Free memory was 160.0 MB in the beginning and 158.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 496.78 ms. Allocated memory is still 203.9 MB. Free memory was 158.7 MB in the beginning and 139.0 MB in the end (delta: 19.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2723.86 ms. Allocated memory was 203.9 MB in the beginning and 247.5 MB in the end (delta: 43.5 MB). Free memory was 138.4 MB in the beginning and 153.1 MB in the end (delta: -14.7 MB). Peak memory consumption was 28.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.3s, 60 ProgramPointsBefore, 22 ProgramPointsAfterwards, 55 TransitionsBefore, 15 TransitionsAfterwards, 672 CoEnabledTransitionPairs, 7 FixpointIterations, 12 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 371 VarBasedMoverChecksPositive, 21 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 1251 CheckedPairsTotal, 49 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 3 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.5s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 60 SDtfs, 27 SDslu, 46 SDs, 0 SdLazy, 33 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred 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: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 37 ConstructedInterpolants, 0 QuantifiedInterpolants, 709 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...