/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/safe035_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-60655ea [2020-09-16 01:11:37,960 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-16 01:11:37,965 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-16 01:11:38,009 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-16 01:11:38,009 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-16 01:11:38,021 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-16 01:11:38,022 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-16 01:11:38,026 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-16 01:11:38,029 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-16 01:11:38,031 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-16 01:11:38,032 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-16 01:11:38,035 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-16 01:11:38,035 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-16 01:11:38,038 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-16 01:11:38,040 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-16 01:11:38,043 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-16 01:11:38,044 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-16 01:11:38,046 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-16 01:11:38,047 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-16 01:11:38,054 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-16 01:11:38,058 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-16 01:11:38,059 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-16 01:11:38,060 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-16 01:11:38,061 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-16 01:11:38,066 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-16 01:11:38,073 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-16 01:11:38,073 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-16 01:11:38,074 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-16 01:11:38,075 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-16 01:11:38,076 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-16 01:11:38,077 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-16 01:11:38,077 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-16 01:11:38,078 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-16 01:11:38,078 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-16 01:11:38,079 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-16 01:11:38,080 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-16 01:11:38,081 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 [2020-09-16 01:11:38,131 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-16 01:11:38,132 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-16 01:11:38,134 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-16 01:11:38,134 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-16 01:11:38,134 INFO L138 SettingsManager]: * Use SBE=true [2020-09-16 01:11:38,135 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-16 01:11:38,135 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-16 01:11:38,135 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-16 01:11:38,136 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-16 01:11:38,136 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-16 01:11:38,137 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-16 01:11:38,137 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-16 01:11:38,137 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-16 01:11:38,138 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-16 01:11:38,138 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-16 01:11:38,138 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-16 01:11:38,138 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-16 01:11:38,139 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-16 01:11:38,139 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-16 01:11:38,139 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-16 01:11:38,139 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-16 01:11:38,139 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-16 01:11:38,140 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-16 01:11:38,140 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-16 01:11:38,140 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-16 01:11:38,140 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-16 01:11:38,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-16 01:11:38,141 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-16 01:11:38,141 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-16 01:11:38,141 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-16 01:11:38,141 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-16 01:11:38,578 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-16 01:11:38,595 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-16 01:11:38,600 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-16 01:11:38,602 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-16 01:11:38,602 INFO L275 PluginConnector]: CDTParser initialized [2020-09-16 01:11:38,603 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe035_tso.oepc.i [2020-09-16 01:11:38,685 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b513bbdc8/f8c53117b09548f6809ec72b24da0003/FLAG4fd04db02 [2020-09-16 01:11:39,389 INFO L306 CDTParser]: Found 1 translation units. [2020-09-16 01:11:39,391 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe035_tso.oepc.i [2020-09-16 01:11:39,416 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b513bbdc8/f8c53117b09548f6809ec72b24da0003/FLAG4fd04db02 [2020-09-16 01:11:39,574 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b513bbdc8/f8c53117b09548f6809ec72b24da0003 [2020-09-16 01:11:39,588 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-16 01:11:39,592 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-16 01:11:39,594 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-16 01:11:39,594 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-16 01:11:39,598 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-16 01:11:39,599 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 01:11:39" (1/1) ... [2020-09-16 01:11:39,603 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31b6ae98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:11:39, skipping insertion in model container [2020-09-16 01:11:39,603 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 01:11:39" (1/1) ... [2020-09-16 01:11:39,611 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-16 01:11:39,666 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-16 01:11:40,251 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-16 01:11:40,268 INFO L203 MainTranslator]: Completed pre-run [2020-09-16 01:11:40,315 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-16 01:11:40,394 INFO L208 MainTranslator]: Completed translation [2020-09-16 01:11:40,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:11:40 WrapperNode [2020-09-16 01:11:40,395 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-16 01:11:40,396 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-16 01:11:40,396 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-16 01:11:40,397 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-16 01:11:40,408 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:11:40" (1/1) ... [2020-09-16 01:11:40,428 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:11:40" (1/1) ... [2020-09-16 01:11:40,453 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-16 01:11:40,453 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-16 01:11:40,453 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-16 01:11:40,454 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-16 01:11:40,466 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:11:40" (1/1) ... [2020-09-16 01:11:40,466 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:11:40" (1/1) ... [2020-09-16 01:11:40,476 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:11:40" (1/1) ... [2020-09-16 01:11:40,477 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:11:40" (1/1) ... [2020-09-16 01:11:40,491 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:11:40" (1/1) ... [2020-09-16 01:11:40,494 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:11:40" (1/1) ... [2020-09-16 01:11:40,497 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:11:40" (1/1) ... [2020-09-16 01:11:40,500 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-16 01:11:40,501 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-16 01:11:40,501 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-16 01:11:40,501 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-16 01:11:40,503 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:11:40" (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 [2020-09-16 01:11:40,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-16 01:11:40,587 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-16 01:11:40,587 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-16 01:11:40,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-16 01:11:40,588 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-16 01:11:40,588 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-16 01:11:40,588 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-16 01:11:40,588 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-16 01:11:40,588 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-16 01:11:40,589 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-16 01:11:40,589 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-16 01:11:40,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-16 01:11:40,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-16 01:11:40,592 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-16 01:11:41,039 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-16 01:11:41,040 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-16 01:11:41,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 01:11:41 BoogieIcfgContainer [2020-09-16 01:11:41,048 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-16 01:11:41,049 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-16 01:11:41,049 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-16 01:11:41,053 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-16 01:11:41,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 01:11:39" (1/3) ... [2020-09-16 01:11:41,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d8857 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 01:11:41, skipping insertion in model container [2020-09-16 01:11:41,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:11:40" (2/3) ... [2020-09-16 01:11:41,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d8857 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 01:11:41, skipping insertion in model container [2020-09-16 01:11:41,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 01:11:41" (3/3) ... [2020-09-16 01:11:41,058 INFO L109 eAbstractionObserver]: Analyzing ICFG safe035_tso.oepc.i [2020-09-16 01:11:41,070 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-16 01:11:41,070 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-16 01:11:41,081 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-16 01:11:41,082 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-16 01:11:41,118 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:41,118 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:41,118 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:41,118 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:41,119 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:41,119 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:41,120 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:41,120 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:41,120 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:41,121 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:41,121 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:41,121 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:41,122 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:41,122 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:41,122 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:41,122 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:41,123 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:41,123 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:41,128 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:41,128 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:41,129 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:41,129 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:41,138 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:41,138 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:41,138 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:41,139 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:41,142 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:41,143 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:41,143 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:41,143 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:41,169 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-16 01:11:41,192 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-16 01:11:41,193 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-16 01:11:41,193 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-16 01:11:41,193 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-16 01:11:41,193 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-16 01:11:41,193 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-16 01:11:41,194 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-16 01:11:41,194 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-16 01:11:41,211 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-09-16 01:11:41,214 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-16 01:11:41,265 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-16 01:11:41,265 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-16 01:11:41,271 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 49 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. [2020-09-16 01:11:41,274 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-16 01:11:41,295 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-16 01:11:41,295 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-16 01:11:41,296 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 49 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. [2020-09-16 01:11:41,298 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-16 01:11:41,299 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-16 01:11:42,733 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-09-16 01:11:42,942 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2414 [2020-09-16 01:11:42,942 INFO L214 etLargeBlockEncoding]: Total number of compositions: 56 [2020-09-16 01:11:42,947 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-09-16 01:11:42,978 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-09-16 01:11:42,981 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-09-16 01:11:42,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-16 01:11:42,992 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 01:11:42,993 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 01:11:42,993 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 01:11:43,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 01:11:43,001 INFO L82 PathProgramCache]: Analyzing trace with hash 1626757645, now seen corresponding path program 1 times [2020-09-16 01:11:43,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 01:11:43,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842606049] [2020-09-16 01:11:43,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 01:11:43,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 01:11:43,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 01:11:43,269 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842606049] [2020-09-16 01:11:43,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 01:11:43,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-16 01:11:43,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [564249317] [2020-09-16 01:11:43,272 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 01:11:43,276 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 01:11:43,293 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-16 01:11:43,293 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 01:11:43,296 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 01:11:43,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-16 01:11:43,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 01:11:43,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-16 01:11:43,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 01:11:43,319 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-09-16 01:11:43,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 01:11:43,365 INFO L93 Difference]: Finished difference Result 294 states and 849 transitions. [2020-09-16 01:11:43,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-16 01:11:43,368 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-16 01:11:43,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 01:11:43,387 INFO L225 Difference]: With dead ends: 294 [2020-09-16 01:11:43,388 INFO L226 Difference]: Without dead ends: 230 [2020-09-16 01:11:43,389 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 [2020-09-16 01:11:43,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-09-16 01:11:43,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2020-09-16 01:11:43,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-09-16 01:11:43,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 641 transitions. [2020-09-16 01:11:43,469 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 641 transitions. Word has length 8 [2020-09-16 01:11:43,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 01:11:43,471 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 641 transitions. [2020-09-16 01:11:43,471 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-16 01:11:43,471 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 641 transitions. [2020-09-16 01:11:43,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-16 01:11:43,472 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 01:11:43,473 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 01:11:43,473 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-16 01:11:43,473 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 01:11:43,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 01:11:43,474 INFO L82 PathProgramCache]: Analyzing trace with hash 113122264, now seen corresponding path program 1 times [2020-09-16 01:11:43,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 01:11:43,474 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174580098] [2020-09-16 01:11:43,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 01:11:43,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 01:11:43,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 01:11:43,589 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174580098] [2020-09-16 01:11:43,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 01:11:43,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-16 01:11:43,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1634825889] [2020-09-16 01:11:43,590 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 01:11:43,591 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 01:11:43,595 INFO L274 McrAutomatonBuilder]: Finished intersection with 15 states and 19 transitions. [2020-09-16 01:11:43,596 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 01:11:43,646 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 01:11:43,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-16 01:11:43,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 01:11:43,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-16 01:11:43,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 01:11:43,649 INFO L87 Difference]: Start difference. First operand 230 states and 641 transitions. Second operand 3 states. [2020-09-16 01:11:43,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 01:11:43,660 INFO L93 Difference]: Finished difference Result 202 states and 544 transitions. [2020-09-16 01:11:43,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-16 01:11:43,661 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-09-16 01:11:43,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 01:11:43,664 INFO L225 Difference]: With dead ends: 202 [2020-09-16 01:11:43,664 INFO L226 Difference]: Without dead ends: 202 [2020-09-16 01:11:43,665 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 [2020-09-16 01:11:43,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-09-16 01:11:43,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-09-16 01:11:43,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-09-16 01:11:43,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-09-16 01:11:43,685 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 9 [2020-09-16 01:11:43,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 01:11:43,685 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-09-16 01:11:43,685 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-16 01:11:43,686 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-09-16 01:11:43,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-16 01:11:43,687 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 01:11:43,687 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 01:11:43,688 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-16 01:11:43,688 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 01:11:43,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 01:11:43,688 INFO L82 PathProgramCache]: Analyzing trace with hash -54559497, now seen corresponding path program 1 times [2020-09-16 01:11:43,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 01:11:43,689 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871583270] [2020-09-16 01:11:43,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 01:11:43,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 01:11:43,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 01:11:43,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871583270] [2020-09-16 01:11:43,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 01:11:43,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-16 01:11:43,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1668568086] [2020-09-16 01:11:43,755 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 01:11:43,756 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 01:11:43,758 INFO L274 McrAutomatonBuilder]: Finished intersection with 13 states and 14 transitions. [2020-09-16 01:11:43,758 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 01:11:43,762 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 01:11:43,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-16 01:11:43,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 01:11:43,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-16 01:11:43,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 01:11:43,763 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 3 states. [2020-09-16 01:11:43,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 01:11:43,784 INFO L93 Difference]: Finished difference Result 266 states and 704 transitions. [2020-09-16 01:11:43,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-16 01:11:43,785 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-09-16 01:11:43,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 01:11:43,787 INFO L225 Difference]: With dead ends: 266 [2020-09-16 01:11:43,787 INFO L226 Difference]: Without dead ends: 140 [2020-09-16 01:11:43,787 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 [2020-09-16 01:11:43,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-09-16 01:11:43,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2020-09-16 01:11:43,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-09-16 01:11:43,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 362 transitions. [2020-09-16 01:11:43,800 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 362 transitions. Word has length 10 [2020-09-16 01:11:43,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 01:11:43,800 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 362 transitions. [2020-09-16 01:11:43,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-16 01:11:43,801 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 362 transitions. [2020-09-16 01:11:43,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-16 01:11:43,802 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 01:11:43,802 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 01:11:43,802 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-16 01:11:43,802 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 01:11:43,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 01:11:43,803 INFO L82 PathProgramCache]: Analyzing trace with hash -1691362226, now seen corresponding path program 1 times [2020-09-16 01:11:43,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 01:11:43,803 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126783611] [2020-09-16 01:11:43,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 01:11:43,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 01:11:43,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 01:11:43,935 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126783611] [2020-09-16 01:11:43,935 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 01:11:43,935 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-16 01:11:43,936 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1696237083] [2020-09-16 01:11:43,936 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 01:11:43,937 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 01:11:43,939 INFO L274 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-09-16 01:11:43,940 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 01:11:43,947 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 01:11:43,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-16 01:11:43,947 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 01:11:43,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-16 01:11:43,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-16 01:11:43,948 INFO L87 Difference]: Start difference. First operand 140 states and 362 transitions. Second operand 4 states. [2020-09-16 01:11:43,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 01:11:43,985 INFO L93 Difference]: Finished difference Result 165 states and 389 transitions. [2020-09-16 01:11:43,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-16 01:11:43,986 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-09-16 01:11:43,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 01:11:43,987 INFO L225 Difference]: With dead ends: 165 [2020-09-16 01:11:43,987 INFO L226 Difference]: Without dead ends: 113 [2020-09-16 01:11:43,988 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-16 01:11:43,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-09-16 01:11:43,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2020-09-16 01:11:43,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-09-16 01:11:43,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 257 transitions. [2020-09-16 01:11:43,997 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 257 transitions. Word has length 11 [2020-09-16 01:11:43,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 01:11:43,997 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 257 transitions. [2020-09-16 01:11:43,997 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-16 01:11:43,997 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 257 transitions. [2020-09-16 01:11:43,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-16 01:11:43,998 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 01:11:43,999 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 01:11:43,999 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-16 01:11:43,999 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 01:11:43,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 01:11:44,000 INFO L82 PathProgramCache]: Analyzing trace with hash -891715752, now seen corresponding path program 1 times [2020-09-16 01:11:44,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 01:11:44,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923530304] [2020-09-16 01:11:44,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 01:11:44,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 01:11:44,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 01:11:44,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923530304] [2020-09-16 01:11:44,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 01:11:44,139 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 01:11:44,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [105610039] [2020-09-16 01:11:44,139 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 01:11:44,141 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 01:11:44,148 INFO L274 McrAutomatonBuilder]: Finished intersection with 20 states and 25 transitions. [2020-09-16 01:11:44,148 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 01:11:44,170 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2995#(<= ~__unbuffered_cnt~0 0)] [2020-09-16 01:11:44,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-16 01:11:44,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 01:11:44,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-16 01:11:44,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-16 01:11:44,172 INFO L87 Difference]: Start difference. First operand 113 states and 257 transitions. Second operand 6 states. [2020-09-16 01:11:44,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 01:11:44,244 INFO L93 Difference]: Finished difference Result 111 states and 232 transitions. [2020-09-16 01:11:44,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-16 01:11:44,245 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-09-16 01:11:44,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 01:11:44,246 INFO L225 Difference]: With dead ends: 111 [2020-09-16 01:11:44,246 INFO L226 Difference]: Without dead ends: 80 [2020-09-16 01:11:44,247 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-16 01:11:44,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-09-16 01:11:44,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-09-16 01:11:44,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-09-16 01:11:44,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 159 transitions. [2020-09-16 01:11:44,252 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 159 transitions. Word has length 12 [2020-09-16 01:11:44,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 01:11:44,253 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 159 transitions. [2020-09-16 01:11:44,253 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-16 01:11:44,254 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 159 transitions. [2020-09-16 01:11:44,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-16 01:11:44,255 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 01:11:44,255 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 01:11:44,255 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-16 01:11:44,255 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 01:11:44,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 01:11:44,256 INFO L82 PathProgramCache]: Analyzing trace with hash 2053094164, now seen corresponding path program 1 times [2020-09-16 01:11:44,256 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 01:11:44,257 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215631381] [2020-09-16 01:11:44,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 01:11:44,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 01:11:44,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 01:11:44,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215631381] [2020-09-16 01:11:44,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 01:11:44,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-16 01:11:44,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [66715296] [2020-09-16 01:11:44,399 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 01:11:44,401 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 01:11:44,404 INFO L274 McrAutomatonBuilder]: Finished intersection with 27 states and 36 transitions. [2020-09-16 01:11:44,404 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 01:11:44,423 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3275#(<= ~__unbuffered_cnt~0 0)] [2020-09-16 01:11:44,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-16 01:11:44,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 01:11:44,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-16 01:11:44,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-16 01:11:44,424 INFO L87 Difference]: Start difference. First operand 80 states and 159 transitions. Second operand 7 states. [2020-09-16 01:11:44,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 01:11:44,509 INFO L93 Difference]: Finished difference Result 75 states and 147 transitions. [2020-09-16 01:11:44,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-16 01:11:44,510 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-09-16 01:11:44,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 01:11:44,511 INFO L225 Difference]: With dead ends: 75 [2020-09-16 01:11:44,511 INFO L226 Difference]: Without dead ends: 66 [2020-09-16 01:11:44,511 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-09-16 01:11:44,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-16 01:11:44,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-09-16 01:11:44,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-16 01:11:44,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 131 transitions. [2020-09-16 01:11:44,515 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 131 transitions. Word has length 14 [2020-09-16 01:11:44,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 01:11:44,516 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 131 transitions. [2020-09-16 01:11:44,516 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-16 01:11:44,516 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 131 transitions. [2020-09-16 01:11:44,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-16 01:11:44,517 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 01:11:44,517 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 01:11:44,517 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-16 01:11:44,517 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 01:11:44,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 01:11:44,518 INFO L82 PathProgramCache]: Analyzing trace with hash -913032564, now seen corresponding path program 1 times [2020-09-16 01:11:44,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 01:11:44,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986997035] [2020-09-16 01:11:44,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 01:11:44,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 01:11:44,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 01:11:44,570 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986997035] [2020-09-16 01:11:44,571 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 01:11:44,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 01:11:44,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [134633565] [2020-09-16 01:11:44,571 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 01:11:44,573 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 01:11:44,579 INFO L274 McrAutomatonBuilder]: Finished intersection with 40 states and 57 transitions. [2020-09-16 01:11:44,580 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 01:11:44,601 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 01:11:44,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-16 01:11:44,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 01:11:44,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-16 01:11:44,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-16 01:11:44,602 INFO L87 Difference]: Start difference. First operand 66 states and 131 transitions. Second operand 4 states. [2020-09-16 01:11:44,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 01:11:44,630 INFO L93 Difference]: Finished difference Result 85 states and 165 transitions. [2020-09-16 01:11:44,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-16 01:11:44,631 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-16 01:11:44,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 01:11:44,631 INFO L225 Difference]: With dead ends: 85 [2020-09-16 01:11:44,631 INFO L226 Difference]: Without dead ends: 48 [2020-09-16 01:11:44,632 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-16 01:11:44,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-16 01:11:44,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-09-16 01:11:44,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-16 01:11:44,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 83 transitions. [2020-09-16 01:11:44,636 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 83 transitions. Word has length 17 [2020-09-16 01:11:44,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 01:11:44,636 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 83 transitions. [2020-09-16 01:11:44,637 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-16 01:11:44,637 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 83 transitions. [2020-09-16 01:11:44,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-16 01:11:44,640 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 01:11:44,640 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 01:11:44,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-16 01:11:44,641 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 01:11:44,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 01:11:44,641 INFO L82 PathProgramCache]: Analyzing trace with hash -1376526520, now seen corresponding path program 2 times [2020-09-16 01:11:44,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 01:11:44,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284303645] [2020-09-16 01:11:44,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 01:11:44,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 01:11:44,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 01:11:44,727 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284303645] [2020-09-16 01:11:44,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 01:11:44,727 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 01:11:44,727 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1154029538] [2020-09-16 01:11:44,728 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 01:11:44,732 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 01:11:44,738 INFO L274 McrAutomatonBuilder]: Finished intersection with 38 states and 57 transitions. [2020-09-16 01:11:44,738 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 01:11:44,761 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 01:11:44,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-16 01:11:44,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 01:11:44,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-16 01:11:44,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-16 01:11:44,764 INFO L87 Difference]: Start difference. First operand 48 states and 83 transitions. Second operand 4 states. [2020-09-16 01:11:44,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 01:11:44,786 INFO L93 Difference]: Finished difference Result 73 states and 130 transitions. [2020-09-16 01:11:44,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-16 01:11:44,787 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-16 01:11:44,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 01:11:44,787 INFO L225 Difference]: With dead ends: 73 [2020-09-16 01:11:44,787 INFO L226 Difference]: Without dead ends: 42 [2020-09-16 01:11:44,788 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-16 01:11:44,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-16 01:11:44,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-16 01:11:44,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-16 01:11:44,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 71 transitions. [2020-09-16 01:11:44,790 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 71 transitions. Word has length 17 [2020-09-16 01:11:44,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 01:11:44,797 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 71 transitions. [2020-09-16 01:11:44,798 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-16 01:11:44,798 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 71 transitions. [2020-09-16 01:11:44,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-16 01:11:44,799 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 01:11:44,801 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 01:11:44,801 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-16 01:11:44,801 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 01:11:44,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 01:11:44,802 INFO L82 PathProgramCache]: Analyzing trace with hash -1323635892, now seen corresponding path program 3 times [2020-09-16 01:11:44,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 01:11:44,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241330596] [2020-09-16 01:11:44,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 01:11:44,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 01:11:44,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 01:11:44,862 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241330596] [2020-09-16 01:11:44,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 01:11:44,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 01:11:44,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [277312274] [2020-09-16 01:11:44,863 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 01:11:44,865 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 01:11:44,869 INFO L274 McrAutomatonBuilder]: Finished intersection with 30 states and 39 transitions. [2020-09-16 01:11:44,869 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 01:11:44,898 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 01:11:44,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-16 01:11:44,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 01:11:44,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-16 01:11:44,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-16 01:11:44,899 INFO L87 Difference]: Start difference. First operand 42 states and 71 transitions. Second operand 4 states. [2020-09-16 01:11:44,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 01:11:44,910 INFO L93 Difference]: Finished difference Result 41 states and 70 transitions. [2020-09-16 01:11:44,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-16 01:11:44,910 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-16 01:11:44,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 01:11:44,911 INFO L225 Difference]: With dead ends: 41 [2020-09-16 01:11:44,911 INFO L226 Difference]: Without dead ends: 0 [2020-09-16 01:11:44,911 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-16 01:11:44,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-16 01:11:44,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-16 01:11:44,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-16 01:11:44,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-16 01:11:44,912 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-09-16 01:11:44,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 01:11:44,912 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-16 01:11:44,912 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-16 01:11:44,913 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-16 01:11:44,913 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-16 01:11:44,913 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-16 01:11:44,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 01:11:44 BasicIcfg [2020-09-16 01:11:44,918 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-16 01:11:44,920 INFO L168 Benchmark]: Toolchain (without parser) took 5330.85 ms. Allocated memory was 141.0 MB in the beginning and 245.9 MB in the end (delta: 104.9 MB). Free memory was 101.1 MB in the beginning and 117.0 MB in the end (delta: -15.9 MB). Peak memory consumption was 89.0 MB. Max. memory is 7.1 GB. [2020-09-16 01:11:44,921 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-16 01:11:44,922 INFO L168 Benchmark]: CACSL2BoogieTranslator took 802.19 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 100.5 MB in the beginning and 161.7 MB in the end (delta: -61.2 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. [2020-09-16 01:11:44,923 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.75 ms. Allocated memory is still 205.0 MB. Free memory was 161.7 MB in the beginning and 159.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. [2020-09-16 01:11:44,924 INFO L168 Benchmark]: Boogie Preprocessor took 47.41 ms. Allocated memory is still 205.0 MB. Free memory was 159.2 MB in the beginning and 157.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-16 01:11:44,924 INFO L168 Benchmark]: RCFGBuilder took 547.17 ms. Allocated memory is still 205.0 MB. Free memory was 157.9 MB in the beginning and 135.5 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-09-16 01:11:44,925 INFO L168 Benchmark]: TraceAbstraction took 3868.93 ms. Allocated memory was 205.0 MB in the beginning and 245.9 MB in the end (delta: 40.9 MB). Free memory was 134.9 MB in the beginning and 117.0 MB in the end (delta: 17.9 MB). Peak memory consumption was 58.8 MB. Max. memory is 7.1 GB. [2020-09-16 01:11:44,929 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 802.19 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 100.5 MB in the beginning and 161.7 MB in the end (delta: -61.2 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 56.75 ms. Allocated memory is still 205.0 MB. Free memory was 161.7 MB in the beginning and 159.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 47.41 ms. Allocated memory is still 205.0 MB. Free memory was 159.2 MB in the beginning and 157.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 547.17 ms. Allocated memory is still 205.0 MB. Free memory was 157.9 MB in the beginning and 135.5 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3868.93 ms. Allocated memory was 205.0 MB in the beginning and 245.9 MB in the end (delta: 40.9 MB). Free memory was 134.9 MB in the beginning and 117.0 MB in the end (delta: 17.9 MB). Peak memory consumption was 58.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.7s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 21 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 626 VarBasedMoverChecksPositive, 24 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2414 CheckedPairsTotal, 56 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.7s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 172 SDtfs, 121 SDslu, 225 SDs, 0 SdLazy, 130 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 121 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 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, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 115 NumberOfCodeBlocks, 115 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 106 ConstructedInterpolants, 0 QuantifiedInterpolants, 3412 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...