/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-nondet/nondet-array-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-bf4350c [2020-09-18 02:58:39,070 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-18 02:58:39,074 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-18 02:58:39,101 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-18 02:58:39,101 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-18 02:58:39,103 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-18 02:58:39,105 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-18 02:58:39,107 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-18 02:58:39,108 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-18 02:58:39,110 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-18 02:58:39,111 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-18 02:58:39,112 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-18 02:58:39,113 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-18 02:58:39,115 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-18 02:58:39,118 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-18 02:58:39,119 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-18 02:58:39,120 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-18 02:58:39,122 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-18 02:58:39,125 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-18 02:58:39,128 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-18 02:58:39,129 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-18 02:58:39,131 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-18 02:58:39,132 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-18 02:58:39,134 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-18 02:58:39,137 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-18 02:58:39,141 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-18 02:58:39,142 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-18 02:58:39,143 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-18 02:58:39,144 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-18 02:58:39,146 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-18 02:58:39,146 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-18 02:58:39,147 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-18 02:58:39,147 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-18 02:58:39,148 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-18 02:58:39,149 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-18 02:58:39,150 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-18 02:58:39,151 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-09-18 02:58:39,180 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-18 02:58:39,180 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-18 02:58:39,182 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-18 02:58:39,182 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-18 02:58:39,182 INFO L138 SettingsManager]: * Use SBE=true [2020-09-18 02:58:39,182 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-18 02:58:39,182 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-18 02:58:39,183 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-18 02:58:39,183 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-18 02:58:39,183 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-18 02:58:39,183 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-18 02:58:39,184 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-18 02:58:39,184 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-18 02:58:39,184 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-18 02:58:39,184 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-18 02:58:39,184 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-18 02:58:39,185 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-18 02:58:39,185 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-18 02:58:39,185 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-18 02:58:39,185 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-18 02:58:39,186 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-18 02:58:39,186 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-18 02:58:39,186 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-18 02:58:39,186 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-18 02:58:39,186 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-18 02:58:39,187 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-18 02:58:39,187 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-18 02:58:39,187 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-18 02:58:39,187 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-18 02:58:39,188 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-18 02:58:39,188 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-18 02:58:39,692 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-18 02:58:39,711 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-18 02:58:39,715 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-18 02:58:39,717 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-18 02:58:39,718 INFO L275 PluginConnector]: CDTParser initialized [2020-09-18 02:58:39,719 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-nondet/nondet-array-2.i [2020-09-18 02:58:39,820 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7561140b0/259322df1e824a42a80eeee655185b72/FLAGa45a4f0f9 [2020-09-18 02:58:40,454 INFO L306 CDTParser]: Found 1 translation units. [2020-09-18 02:58:40,455 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-nondet/nondet-array-2.i [2020-09-18 02:58:40,471 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7561140b0/259322df1e824a42a80eeee655185b72/FLAGa45a4f0f9 [2020-09-18 02:58:40,677 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7561140b0/259322df1e824a42a80eeee655185b72 [2020-09-18 02:58:40,691 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-18 02:58:40,696 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-18 02:58:40,699 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-18 02:58:40,699 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-18 02:58:40,704 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-18 02:58:40,705 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 02:58:40" (1/1) ... [2020-09-18 02:58:40,710 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a91aa8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:58:40, skipping insertion in model container [2020-09-18 02:58:40,710 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 02:58:40" (1/1) ... [2020-09-18 02:58:40,721 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-18 02:58:40,795 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-18 02:58:41,416 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-18 02:58:41,438 INFO L203 MainTranslator]: Completed pre-run [2020-09-18 02:58:41,505 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-18 02:58:41,582 INFO L208 MainTranslator]: Completed translation [2020-09-18 02:58:41,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:58:41 WrapperNode [2020-09-18 02:58:41,583 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-18 02:58:41,584 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-18 02:58:41,584 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-18 02:58:41,584 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-18 02:58:41,596 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:58:41" (1/1) ... [2020-09-18 02:58:41,616 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:58:41" (1/1) ... [2020-09-18 02:58:41,648 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-18 02:58:41,648 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-18 02:58:41,649 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-18 02:58:41,649 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-18 02:58:41,661 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:58:41" (1/1) ... [2020-09-18 02:58:41,661 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:58:41" (1/1) ... [2020-09-18 02:58:41,665 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:58:41" (1/1) ... [2020-09-18 02:58:41,665 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:58:41" (1/1) ... [2020-09-18 02:58:41,674 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:58:41" (1/1) ... [2020-09-18 02:58:41,681 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:58:41" (1/1) ... [2020-09-18 02:58:41,683 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:58:41" (1/1) ... [2020-09-18 02:58:41,687 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-18 02:58:41,687 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-18 02:58:41,688 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-18 02:58:41,688 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-18 02:58:41,689 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:58:41" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-09-18 02:58:41,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-09-18 02:58:41,778 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-18 02:58:41,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-18 02:58:41,778 INFO L130 BoogieDeclarations]: Found specification of procedure thr [2020-09-18 02:58:41,779 INFO L138 BoogieDeclarations]: Found implementation of procedure thr [2020-09-18 02:58:41,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-18 02:58:41,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-18 02:58:41,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-18 02:58:41,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-18 02:58:41,784 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-18 02:58:42,205 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-18 02:58:42,205 INFO L298 CfgBuilder]: Removed 11 assume(true) statements. [2020-09-18 02:58:42,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 02:58:42 BoogieIcfgContainer [2020-09-18 02:58:42,210 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-18 02:58:42,211 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-18 02:58:42,212 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-18 02:58:42,215 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-18 02:58:42,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 02:58:40" (1/3) ... [2020-09-18 02:58:42,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2071f647 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 02:58:42, skipping insertion in model container [2020-09-18 02:58:42,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 02:58:41" (2/3) ... [2020-09-18 02:58:42,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2071f647 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 02:58:42, skipping insertion in model container [2020-09-18 02:58:42,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 02:58:42" (3/3) ... [2020-09-18 02:58:42,221 INFO L109 eAbstractionObserver]: Analyzing ICFG nondet-array-2.i [2020-09-18 02:58:42,233 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-18 02:58:42,233 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-18 02:58:42,244 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-18 02:58:42,245 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-18 02:58:42,271 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:42,272 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:42,272 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:42,272 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:42,273 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:42,273 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:42,274 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:42,279 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:42,279 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:42,279 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:42,280 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:42,280 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:42,316 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-09-18 02:58:42,342 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-18 02:58:42,342 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-18 02:58:42,342 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-18 02:58:42,342 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-18 02:58:42,343 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-18 02:58:42,343 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-18 02:58:42,343 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-18 02:58:42,343 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-18 02:58:42,361 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 67 places, 71 transitions, 150 flow [2020-09-18 02:58:42,363 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 67 places, 71 transitions, 150 flow [2020-09-18 02:58:42,427 INFO L129 PetriNetUnfolder]: 12/103 cut-off events. [2020-09-18 02:58:42,427 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-09-18 02:58:42,432 INFO L80 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 103 events. 12/103 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 206 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 55. Up to 4 conditions per place. [2020-09-18 02:58:42,435 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 67 places, 71 transitions, 150 flow [2020-09-18 02:58:42,467 INFO L129 PetriNetUnfolder]: 12/103 cut-off events. [2020-09-18 02:58:42,468 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-09-18 02:58:42,468 INFO L80 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 103 events. 12/103 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 206 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 55. Up to 4 conditions per place. [2020-09-18 02:58:42,471 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 370 [2020-09-18 02:58:42,472 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-18 02:58:43,849 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2020-09-18 02:58:44,139 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2020-09-18 02:58:44,313 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2020-09-18 02:58:44,400 INFO L206 etLargeBlockEncoding]: Checked pairs total: 264 [2020-09-18 02:58:44,400 INFO L214 etLargeBlockEncoding]: Total number of compositions: 66 [2020-09-18 02:58:44,406 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 15 places, 14 transitions, 36 flow [2020-09-18 02:58:44,417 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 27 states. [2020-09-18 02:58:44,420 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-09-18 02:58:44,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-09-18 02:58:44,429 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:58:44,430 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-09-18 02:58:44,431 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:58:44,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:58:44,438 INFO L82 PathProgramCache]: Analyzing trace with hash 8680406, now seen corresponding path program 1 times [2020-09-18 02:58:44,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:58:44,463 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122772991] [2020-09-18 02:58:44,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:58:44,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:58:44,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 02:58:44,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122772991] [2020-09-18 02:58:44,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 02:58:44,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-18 02:58:44,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [718733904] [2020-09-18 02:58:44,677 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:58:44,680 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:58:44,697 INFO L274 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-09-18 02:58:44,697 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:58:44,699 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 02:58:44,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-18 02:58:44,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:58:44,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-18 02:58:44,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 02:58:44,722 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 3 states. [2020-09-18 02:58:44,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:58:44,761 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2020-09-18 02:58:44,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-18 02:58:44,763 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-09-18 02:58:44,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:58:44,777 INFO L225 Difference]: With dead ends: 27 [2020-09-18 02:58:44,777 INFO L226 Difference]: Without dead ends: 23 [2020-09-18 02:58:44,779 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 02:58:44,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-09-18 02:58:44,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-09-18 02:58:44,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-09-18 02:58:44,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 32 transitions. [2020-09-18 02:58:44,825 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 32 transitions. Word has length 4 [2020-09-18 02:58:44,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:58:44,826 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 32 transitions. [2020-09-18 02:58:44,826 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-18 02:58:44,826 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 32 transitions. [2020-09-18 02:58:44,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-09-18 02:58:44,827 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:58:44,827 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2020-09-18 02:58:44,827 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-18 02:58:44,827 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:58:44,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:58:44,828 INFO L82 PathProgramCache]: Analyzing trace with hash -256835414, now seen corresponding path program 1 times [2020-09-18 02:58:44,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:58:44,829 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700725708] [2020-09-18 02:58:44,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:58:44,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-18 02:58:44,863 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-18 02:58:44,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-18 02:58:44,885 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-18 02:58:44,916 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-18 02:58:44,917 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-18 02:58:44,918 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-18 02:58:44,919 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-09-18 02:58:44,920 WARN L363 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-18 02:58:44,920 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-09-18 02:58:44,928 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:44,928 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:44,928 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:44,929 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:44,929 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:44,929 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:44,929 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:44,930 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:44,930 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:44,930 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:44,930 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:44,931 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:44,931 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:44,931 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:44,932 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:44,932 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:44,932 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:44,932 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:44,932 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:44,935 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:44,935 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:44,936 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:44,936 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:44,936 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:44,942 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-09-18 02:58:44,942 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-18 02:58:44,942 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-18 02:58:44,943 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-18 02:58:44,943 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-18 02:58:44,943 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-18 02:58:44,943 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-18 02:58:44,943 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-18 02:58:44,943 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-18 02:58:44,946 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 78 transitions, 174 flow [2020-09-18 02:58:44,946 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 75 places, 78 transitions, 174 flow [2020-09-18 02:58:44,979 INFO L129 PetriNetUnfolder]: 23/183 cut-off events. [2020-09-18 02:58:44,979 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2020-09-18 02:58:44,980 INFO L80 FinitePrefix]: Finished finitePrefix Result has 197 conditions, 183 events. 23/183 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 456 event pairs, 0 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 105. Up to 8 conditions per place. [2020-09-18 02:58:44,983 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 75 places, 78 transitions, 174 flow [2020-09-18 02:58:45,008 INFO L129 PetriNetUnfolder]: 23/183 cut-off events. [2020-09-18 02:58:45,008 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2020-09-18 02:58:45,009 INFO L80 FinitePrefix]: Finished finitePrefix Result has 197 conditions, 183 events. 23/183 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 456 event pairs, 0 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 105. Up to 8 conditions per place. [2020-09-18 02:58:45,012 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 900 [2020-09-18 02:58:45,012 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-18 02:58:46,281 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2020-09-18 02:58:46,595 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 84 [2020-09-18 02:58:46,722 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-09-18 02:58:46,901 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 67 [2020-09-18 02:58:46,988 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1723 [2020-09-18 02:58:46,988 INFO L214 etLargeBlockEncoding]: Total number of compositions: 62 [2020-09-18 02:58:46,988 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 25 places, 23 transitions, 64 flow [2020-09-18 02:58:47,001 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 242 states. [2020-09-18 02:58:47,001 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states. [2020-09-18 02:58:47,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-09-18 02:58:47,002 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:58:47,002 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-09-18 02:58:47,002 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:58:47,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:58:47,003 INFO L82 PathProgramCache]: Analyzing trace with hash 13452069, now seen corresponding path program 1 times [2020-09-18 02:58:47,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:58:47,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998340869] [2020-09-18 02:58:47,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:58:47,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:58:47,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 02:58:47,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998340869] [2020-09-18 02:58:47,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 02:58:47,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-18 02:58:47,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1967795661] [2020-09-18 02:58:47,058 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:58:47,059 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:58:47,060 INFO L274 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-09-18 02:58:47,060 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:58:47,060 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 02:58:47,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-18 02:58:47,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:58:47,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-18 02:58:47,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 02:58:47,062 INFO L87 Difference]: Start difference. First operand 242 states. Second operand 3 states. [2020-09-18 02:58:47,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:58:47,106 INFO L93 Difference]: Finished difference Result 242 states and 550 transitions. [2020-09-18 02:58:47,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-18 02:58:47,106 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-09-18 02:58:47,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:58:47,119 INFO L225 Difference]: With dead ends: 242 [2020-09-18 02:58:47,119 INFO L226 Difference]: Without dead ends: 216 [2020-09-18 02:58:47,119 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 02:58:47,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-09-18 02:58:47,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2020-09-18 02:58:47,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-09-18 02:58:47,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 494 transitions. [2020-09-18 02:58:47,154 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 494 transitions. Word has length 4 [2020-09-18 02:58:47,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:58:47,154 INFO L479 AbstractCegarLoop]: Abstraction has 216 states and 494 transitions. [2020-09-18 02:58:47,154 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-18 02:58:47,154 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 494 transitions. [2020-09-18 02:58:47,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-18 02:58:47,155 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:58:47,156 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:58:47,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-18 02:58:47,156 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:58:47,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:58:47,157 INFO L82 PathProgramCache]: Analyzing trace with hash 76722491, now seen corresponding path program 1 times [2020-09-18 02:58:47,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:58:47,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102356723] [2020-09-18 02:58:47,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:58:47,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:58:47,230 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 02:58:47,231 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102356723] [2020-09-18 02:58:47,231 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849076778] [2020-09-18 02:58:47,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-18 02:58:47,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:58:47,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 2 conjunts are in the unsatisfiable core [2020-09-18 02:58:47,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-18 02:58:47,322 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-18 02:58:47,322 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-09-18 02:58:47,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2020-09-18 02:58:47,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [736470274] [2020-09-18 02:58:47,323 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:58:47,324 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:58:47,326 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-18 02:58:47,326 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:58:47,326 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 02:58:47,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-18 02:58:47,327 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:58:47,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-18 02:58:47,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-18 02:58:47,327 INFO L87 Difference]: Start difference. First operand 216 states and 494 transitions. Second operand 3 states. [2020-09-18 02:58:47,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:58:47,344 INFO L93 Difference]: Finished difference Result 241 states and 549 transitions. [2020-09-18 02:58:47,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-18 02:58:47,345 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-18 02:58:47,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:58:47,348 INFO L225 Difference]: With dead ends: 241 [2020-09-18 02:58:47,348 INFO L226 Difference]: Without dead ends: 241 [2020-09-18 02:58:47,349 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-18 02:58:47,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-09-18 02:58:47,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2020-09-18 02:58:47,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-09-18 02:58:47,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 549 transitions. [2020-09-18 02:58:47,374 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 549 transitions. Word has length 8 [2020-09-18 02:58:47,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:58:47,375 INFO L479 AbstractCegarLoop]: Abstraction has 241 states and 549 transitions. [2020-09-18 02:58:47,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-18 02:58:47,376 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 549 transitions. [2020-09-18 02:58:47,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-18 02:58:47,376 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:58:47,377 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:58:47,590 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-18 02:58:47,590 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:58:47,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:58:47,591 INFO L82 PathProgramCache]: Analyzing trace with hash -1916569557, now seen corresponding path program 1 times [2020-09-18 02:58:47,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:58:47,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2973939] [2020-09-18 02:58:47,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:58:47,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:58:47,669 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-18 02:58:47,670 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2973939] [2020-09-18 02:58:47,671 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485598257] [2020-09-18 02:58:47,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-18 02:58:47,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:58:47,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 4 conjunts are in the unsatisfiable core [2020-09-18 02:58:47,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-18 02:58:47,774 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-18 02:58:47,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-18 02:58:47,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2020-09-18 02:58:47,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1732834253] [2020-09-18 02:58:47,776 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:58:47,777 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:58:47,779 INFO L274 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-09-18 02:58:47,779 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:58:47,779 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 02:58:47,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-18 02:58:47,782 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:58:47,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-18 02:58:47,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-09-18 02:58:47,783 INFO L87 Difference]: Start difference. First operand 241 states and 549 transitions. Second operand 6 states. [2020-09-18 02:58:47,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:58:47,828 INFO L93 Difference]: Finished difference Result 241 states and 545 transitions. [2020-09-18 02:58:47,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-18 02:58:47,829 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-09-18 02:58:47,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:58:47,832 INFO L225 Difference]: With dead ends: 241 [2020-09-18 02:58:47,832 INFO L226 Difference]: Without dead ends: 241 [2020-09-18 02:58:47,833 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-09-18 02:58:47,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-09-18 02:58:47,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2020-09-18 02:58:47,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-09-18 02:58:47,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 545 transitions. [2020-09-18 02:58:47,869 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 545 transitions. Word has length 9 [2020-09-18 02:58:47,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:58:47,869 INFO L479 AbstractCegarLoop]: Abstraction has 241 states and 545 transitions. [2020-09-18 02:58:47,874 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-18 02:58:47,874 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 545 transitions. [2020-09-18 02:58:47,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-18 02:58:47,875 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:58:47,876 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2020-09-18 02:58:48,083 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-18 02:58:48,084 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:58:48,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:58:48,085 INFO L82 PathProgramCache]: Analyzing trace with hash 94633273, now seen corresponding path program 1 times [2020-09-18 02:58:48,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:58:48,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718296950] [2020-09-18 02:58:48,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:58:48,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-18 02:58:48,125 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-18 02:58:48,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-18 02:58:48,163 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-18 02:58:48,175 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-18 02:58:48,180 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-18 02:58:48,180 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-18 02:58:48,181 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-09-18 02:58:48,181 WARN L363 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-18 02:58:48,186 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-09-18 02:58:48,194 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:48,195 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:48,195 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:48,195 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:48,196 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:48,197 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:48,197 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:48,197 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:48,198 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:48,198 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:48,198 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:48,198 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:48,198 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:48,199 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:48,199 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:48,199 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:48,199 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:48,200 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:48,200 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:48,200 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:48,200 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:48,202 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:48,202 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:48,203 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:48,203 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:48,203 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:48,210 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:48,210 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:48,210 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:48,211 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:48,211 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:48,213 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:48,214 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:48,214 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:48,214 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:48,214 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:48,220 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-09-18 02:58:48,220 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-18 02:58:48,221 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-18 02:58:48,221 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-18 02:58:48,221 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-18 02:58:48,222 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-18 02:58:48,222 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-18 02:58:48,222 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-18 02:58:48,223 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-18 02:58:48,224 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 85 transitions, 200 flow [2020-09-18 02:58:48,225 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 83 places, 85 transitions, 200 flow [2020-09-18 02:58:48,284 INFO L129 PetriNetUnfolder]: 45/330 cut-off events. [2020-09-18 02:58:48,284 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2020-09-18 02:58:48,285 INFO L80 FinitePrefix]: Finished finitePrefix Result has 358 conditions, 330 events. 45/330 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1086 event pairs, 1 based on Foata normal form. 0/273 useless extension candidates. Maximal degree in co-relation 191. Up to 16 conditions per place. [2020-09-18 02:58:48,291 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 83 places, 85 transitions, 200 flow [2020-09-18 02:58:48,336 INFO L129 PetriNetUnfolder]: 45/330 cut-off events. [2020-09-18 02:58:48,336 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2020-09-18 02:58:48,339 INFO L80 FinitePrefix]: Finished finitePrefix Result has 358 conditions, 330 events. 45/330 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1086 event pairs, 1 based on Foata normal form. 0/273 useless extension candidates. Maximal degree in co-relation 191. Up to 16 conditions per place. [2020-09-18 02:58:48,344 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1470 [2020-09-18 02:58:48,344 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-18 02:58:49,795 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-09-18 02:58:49,908 INFO L206 etLargeBlockEncoding]: Checked pairs total: 3028 [2020-09-18 02:58:49,908 INFO L214 etLargeBlockEncoding]: Total number of compositions: 68 [2020-09-18 02:58:49,908 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 28 transitions, 86 flow [2020-09-18 02:58:49,960 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1150 states. [2020-09-18 02:58:49,960 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states. [2020-09-18 02:58:49,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-09-18 02:58:49,961 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:58:49,961 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-09-18 02:58:49,961 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:58:49,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:58:49,962 INFO L82 PathProgramCache]: Analyzing trace with hash 18528206, now seen corresponding path program 1 times [2020-09-18 02:58:49,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:58:49,963 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972246595] [2020-09-18 02:58:49,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:58:49,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:58:50,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 02:58:50,002 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972246595] [2020-09-18 02:58:50,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 02:58:50,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-18 02:58:50,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [386248583] [2020-09-18 02:58:50,003 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:58:50,004 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:58:50,004 INFO L274 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-09-18 02:58:50,005 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:58:50,005 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 02:58:50,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-18 02:58:50,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:58:50,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-18 02:58:50,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 02:58:50,006 INFO L87 Difference]: Start difference. First operand 1150 states. Second operand 3 states. [2020-09-18 02:58:50,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:58:50,053 INFO L93 Difference]: Finished difference Result 1150 states and 3360 transitions. [2020-09-18 02:58:50,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-18 02:58:50,054 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-09-18 02:58:50,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:58:50,064 INFO L225 Difference]: With dead ends: 1150 [2020-09-18 02:58:50,064 INFO L226 Difference]: Without dead ends: 1024 [2020-09-18 02:58:50,064 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 02:58:50,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2020-09-18 02:58:50,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 1024. [2020-09-18 02:58:50,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1024 states. [2020-09-18 02:58:50,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 3009 transitions. [2020-09-18 02:58:50,110 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 3009 transitions. Word has length 4 [2020-09-18 02:58:50,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:58:50,111 INFO L479 AbstractCegarLoop]: Abstraction has 1024 states and 3009 transitions. [2020-09-18 02:58:50,111 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-18 02:58:50,111 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 3009 transitions. [2020-09-18 02:58:50,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-18 02:58:50,112 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:58:50,112 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:58:50,112 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-18 02:58:50,112 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:58:50,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:58:50,113 INFO L82 PathProgramCache]: Analyzing trace with hash 949696130, now seen corresponding path program 1 times [2020-09-18 02:58:50,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:58:50,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866543951] [2020-09-18 02:58:50,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:58:50,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:58:50,156 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 02:58:50,156 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866543951] [2020-09-18 02:58:50,156 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [335029052] [2020-09-18 02:58:50,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-18 02:58:50,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:58:50,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 2 conjunts are in the unsatisfiable core [2020-09-18 02:58:50,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-18 02:58:50,219 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-18 02:58:50,220 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-09-18 02:58:50,220 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2020-09-18 02:58:50,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1715761543] [2020-09-18 02:58:50,221 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:58:50,222 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:58:50,223 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-18 02:58:50,224 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:58:50,224 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 02:58:50,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-18 02:58:50,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:58:50,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-18 02:58:50,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-18 02:58:50,225 INFO L87 Difference]: Start difference. First operand 1024 states and 3009 transitions. Second operand 3 states. [2020-09-18 02:58:50,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:58:50,258 INFO L93 Difference]: Finished difference Result 1149 states and 3359 transitions. [2020-09-18 02:58:50,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-18 02:58:50,259 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-18 02:58:50,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:58:50,267 INFO L225 Difference]: With dead ends: 1149 [2020-09-18 02:58:50,268 INFO L226 Difference]: Without dead ends: 1149 [2020-09-18 02:58:50,273 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-18 02:58:50,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1149 states. [2020-09-18 02:58:50,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1149 to 1149. [2020-09-18 02:58:50,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1149 states. [2020-09-18 02:58:50,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1149 states to 1149 states and 3359 transitions. [2020-09-18 02:58:50,314 INFO L78 Accepts]: Start accepts. Automaton has 1149 states and 3359 transitions. Word has length 8 [2020-09-18 02:58:50,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:58:50,315 INFO L479 AbstractCegarLoop]: Abstraction has 1149 states and 3359 transitions. [2020-09-18 02:58:50,315 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-18 02:58:50,315 INFO L276 IsEmpty]: Start isEmpty. Operand 1149 states and 3359 transitions. [2020-09-18 02:58:50,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-18 02:58:50,317 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:58:50,317 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:58:50,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-18 02:58:50,532 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:58:50,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:58:50,532 INFO L82 PathProgramCache]: Analyzing trace with hash -624190544, now seen corresponding path program 1 times [2020-09-18 02:58:50,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:58:50,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725387672] [2020-09-18 02:58:50,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:58:50,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:58:50,574 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-18 02:58:50,574 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725387672] [2020-09-18 02:58:50,575 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451430107] [2020-09-18 02:58:50,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-18 02:58:50,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:58:50,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 4 conjunts are in the unsatisfiable core [2020-09-18 02:58:50,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-18 02:58:50,673 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-18 02:58:50,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-18 02:58:50,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2020-09-18 02:58:50,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1892388912] [2020-09-18 02:58:50,675 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:58:50,676 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:58:50,677 INFO L274 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-09-18 02:58:50,677 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:58:50,677 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 02:58:50,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-18 02:58:50,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:58:50,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-18 02:58:50,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-09-18 02:58:50,684 INFO L87 Difference]: Start difference. First operand 1149 states and 3359 transitions. Second operand 6 states. [2020-09-18 02:58:50,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:58:50,742 INFO L93 Difference]: Finished difference Result 1149 states and 3355 transitions. [2020-09-18 02:58:50,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-18 02:58:50,743 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-09-18 02:58:50,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:58:50,751 INFO L225 Difference]: With dead ends: 1149 [2020-09-18 02:58:50,752 INFO L226 Difference]: Without dead ends: 1149 [2020-09-18 02:58:50,752 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-09-18 02:58:50,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1149 states. [2020-09-18 02:58:50,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1149 to 1149. [2020-09-18 02:58:50,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1149 states. [2020-09-18 02:58:50,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1149 states to 1149 states and 3355 transitions. [2020-09-18 02:58:50,802 INFO L78 Accepts]: Start accepts. Automaton has 1149 states and 3355 transitions. Word has length 9 [2020-09-18 02:58:50,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:58:50,803 INFO L479 AbstractCegarLoop]: Abstraction has 1149 states and 3355 transitions. [2020-09-18 02:58:50,803 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-18 02:58:50,803 INFO L276 IsEmpty]: Start isEmpty. Operand 1149 states and 3355 transitions. [2020-09-18 02:58:50,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-18 02:58:50,810 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:58:50,810 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:58:51,023 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-18 02:58:51,023 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:58:51,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:58:51,024 INFO L82 PathProgramCache]: Analyzing trace with hash -1107793731, now seen corresponding path program 1 times [2020-09-18 02:58:51,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:58:51,025 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859953223] [2020-09-18 02:58:51,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:58:51,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:58:51,106 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-18 02:58:51,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859953223] [2020-09-18 02:58:51,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 02:58:51,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-18 02:58:51,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1957871279] [2020-09-18 02:58:51,107 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:58:51,109 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:58:51,110 INFO L274 McrAutomatonBuilder]: Finished intersection with 14 states and 13 transitions. [2020-09-18 02:58:51,111 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:58:51,111 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 02:58:51,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-18 02:58:51,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:58:51,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-18 02:58:51,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-18 02:58:51,112 INFO L87 Difference]: Start difference. First operand 1149 states and 3355 transitions. Second operand 4 states. [2020-09-18 02:58:51,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:58:51,146 INFO L93 Difference]: Finished difference Result 1005 states and 2767 transitions. [2020-09-18 02:58:51,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-18 02:58:51,146 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-09-18 02:58:51,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:58:51,153 INFO L225 Difference]: With dead ends: 1005 [2020-09-18 02:58:51,153 INFO L226 Difference]: Without dead ends: 1005 [2020-09-18 02:58:51,154 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-18 02:58:51,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1005 states. [2020-09-18 02:58:51,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1005 to 973. [2020-09-18 02:58:51,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 973 states. [2020-09-18 02:58:51,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 2707 transitions. [2020-09-18 02:58:51,185 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 2707 transitions. Word has length 13 [2020-09-18 02:58:51,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:58:51,187 INFO L479 AbstractCegarLoop]: Abstraction has 973 states and 2707 transitions. [2020-09-18 02:58:51,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-18 02:58:51,187 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 2707 transitions. [2020-09-18 02:58:51,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-18 02:58:51,188 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:58:51,189 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2020-09-18 02:58:51,189 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-18 02:58:51,189 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:58:51,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:58:51,189 INFO L82 PathProgramCache]: Analyzing trace with hash -515475845, now seen corresponding path program 1 times [2020-09-18 02:58:51,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:58:51,190 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847472094] [2020-09-18 02:58:51,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:58:51,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-18 02:58:51,206 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-18 02:58:51,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-18 02:58:51,223 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-18 02:58:51,231 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-18 02:58:51,231 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-18 02:58:51,232 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-18 02:58:51,232 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-09-18 02:58:51,232 WARN L363 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-18 02:58:51,233 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-09-18 02:58:51,241 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:51,242 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:51,242 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:51,242 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:51,242 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:51,242 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:51,243 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:51,243 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:51,243 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:51,243 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:51,243 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:51,243 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:51,244 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:51,244 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:51,244 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:51,244 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:51,244 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:51,244 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:51,245 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:51,245 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:51,245 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:51,245 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:51,245 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:51,245 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:51,246 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:51,246 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:51,246 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:51,246 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:51,247 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:51,247 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:51,247 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:51,247 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:51,247 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:51,249 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:51,249 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:51,249 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:51,250 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:51,250 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:51,251 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:51,251 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:51,251 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:51,252 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:51,252 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:51,253 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:51,253 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:51,254 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:51,254 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:51,254 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:51,259 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-09-18 02:58:51,259 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-18 02:58:51,260 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-18 02:58:51,260 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-18 02:58:51,260 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-18 02:58:51,260 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-18 02:58:51,261 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-18 02:58:51,261 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-18 02:58:51,261 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-18 02:58:51,262 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 92 transitions, 228 flow [2020-09-18 02:58:51,263 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 92 transitions, 228 flow [2020-09-18 02:58:51,357 INFO L129 PetriNetUnfolder]: 91/613 cut-off events. [2020-09-18 02:58:51,357 INFO L130 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2020-09-18 02:58:51,361 INFO L80 FinitePrefix]: Finished finitePrefix Result has 668 conditions, 613 events. 91/613 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2732 event pairs, 6 based on Foata normal form. 0/506 useless extension candidates. Maximal degree in co-relation 350. Up to 32 conditions per place. [2020-09-18 02:58:51,374 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 92 transitions, 228 flow [2020-09-18 02:58:51,462 INFO L129 PetriNetUnfolder]: 91/613 cut-off events. [2020-09-18 02:58:51,463 INFO L130 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2020-09-18 02:58:51,465 INFO L80 FinitePrefix]: Finished finitePrefix Result has 668 conditions, 613 events. 91/613 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2732 event pairs, 6 based on Foata normal form. 0/506 useless extension candidates. Maximal degree in co-relation 350. Up to 32 conditions per place. [2020-09-18 02:58:51,477 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2120 [2020-09-18 02:58:51,477 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-18 02:58:52,905 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-09-18 02:58:53,020 INFO L206 etLargeBlockEncoding]: Checked pairs total: 4448 [2020-09-18 02:58:53,020 INFO L214 etLargeBlockEncoding]: Total number of compositions: 68 [2020-09-18 02:58:53,020 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 37 places, 33 transitions, 110 flow [2020-09-18 02:58:53,348 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 5482 states. [2020-09-18 02:58:53,348 INFO L276 IsEmpty]: Start isEmpty. Operand 5482 states. [2020-09-18 02:58:53,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-09-18 02:58:53,349 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:58:53,349 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-09-18 02:58:53,349 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:58:53,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:58:53,349 INFO L82 PathProgramCache]: Analyzing trace with hash 23824947, now seen corresponding path program 1 times [2020-09-18 02:58:53,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:58:53,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688133077] [2020-09-18 02:58:53,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:58:53,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:58:53,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 02:58:53,375 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688133077] [2020-09-18 02:58:53,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 02:58:53,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-18 02:58:53,376 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2127132577] [2020-09-18 02:58:53,376 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:58:53,377 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:58:53,377 INFO L274 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-09-18 02:58:53,377 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:58:53,377 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 02:58:53,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-18 02:58:53,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:58:53,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-18 02:58:53,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 02:58:53,378 INFO L87 Difference]: Start difference. First operand 5482 states. Second operand 3 states. [2020-09-18 02:58:53,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:58:53,446 INFO L93 Difference]: Finished difference Result 5482 states and 19554 transitions. [2020-09-18 02:58:53,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-18 02:58:53,447 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-09-18 02:58:53,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:58:53,497 INFO L225 Difference]: With dead ends: 5482 [2020-09-18 02:58:53,497 INFO L226 Difference]: Without dead ends: 4856 [2020-09-18 02:58:53,497 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 02:58:53,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4856 states. [2020-09-18 02:58:53,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4856 to 4856. [2020-09-18 02:58:53,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4856 states. [2020-09-18 02:58:53,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4856 states to 4856 states and 17428 transitions. [2020-09-18 02:58:53,744 INFO L78 Accepts]: Start accepts. Automaton has 4856 states and 17428 transitions. Word has length 4 [2020-09-18 02:58:53,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:58:53,745 INFO L479 AbstractCegarLoop]: Abstraction has 4856 states and 17428 transitions. [2020-09-18 02:58:53,745 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-18 02:58:53,745 INFO L276 IsEmpty]: Start isEmpty. Operand 4856 states and 17428 transitions. [2020-09-18 02:58:53,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-18 02:58:53,745 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:58:53,746 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:58:53,746 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-18 02:58:53,746 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:58:53,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:58:53,746 INFO L82 PathProgramCache]: Analyzing trace with hash -1205655351, now seen corresponding path program 1 times [2020-09-18 02:58:53,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:58:53,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036933563] [2020-09-18 02:58:53,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:58:53,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:58:53,792 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 02:58:53,793 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036933563] [2020-09-18 02:58:53,793 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332252038] [2020-09-18 02:58:53,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-18 02:58:53,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:58:53,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 2 conjunts are in the unsatisfiable core [2020-09-18 02:58:53,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-18 02:58:53,849 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-18 02:58:53,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-09-18 02:58:53,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2020-09-18 02:58:53,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [928960624] [2020-09-18 02:58:53,850 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:58:53,851 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:58:53,852 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-18 02:58:53,852 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:58:53,852 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 02:58:53,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-18 02:58:53,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:58:53,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-18 02:58:53,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-18 02:58:53,853 INFO L87 Difference]: Start difference. First operand 4856 states and 17428 transitions. Second operand 3 states. [2020-09-18 02:58:53,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:58:53,901 INFO L93 Difference]: Finished difference Result 5481 states and 19553 transitions. [2020-09-18 02:58:53,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-18 02:58:53,902 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-18 02:58:53,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:58:53,948 INFO L225 Difference]: With dead ends: 5481 [2020-09-18 02:58:53,948 INFO L226 Difference]: Without dead ends: 5481 [2020-09-18 02:58:53,948 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-18 02:58:53,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5481 states. [2020-09-18 02:58:54,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5481 to 5481. [2020-09-18 02:58:54,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5481 states. [2020-09-18 02:58:54,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5481 states to 5481 states and 19553 transitions. [2020-09-18 02:58:54,138 INFO L78 Accepts]: Start accepts. Automaton has 5481 states and 19553 transitions. Word has length 8 [2020-09-18 02:58:54,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:58:54,139 INFO L479 AbstractCegarLoop]: Abstraction has 5481 states and 19553 transitions. [2020-09-18 02:58:54,139 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-18 02:58:54,139 INFO L276 IsEmpty]: Start isEmpty. Operand 5481 states and 19553 transitions. [2020-09-18 02:58:54,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-18 02:58:54,140 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:58:54,140 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:58:54,354 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-09-18 02:58:54,354 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:58:54,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:58:54,355 INFO L82 PathProgramCache]: Analyzing trace with hash 1279390486, now seen corresponding path program 1 times [2020-09-18 02:58:54,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:58:54,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828240236] [2020-09-18 02:58:54,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:58:54,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:58:54,391 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-18 02:58:54,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828240236] [2020-09-18 02:58:54,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133638920] [2020-09-18 02:58:54,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-18 02:58:54,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:58:54,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 4 conjunts are in the unsatisfiable core [2020-09-18 02:58:54,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-18 02:58:54,487 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-18 02:58:54,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-18 02:58:54,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2020-09-18 02:58:54,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1983447901] [2020-09-18 02:58:54,489 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:58:54,490 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:58:54,492 INFO L274 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-09-18 02:58:54,492 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:58:54,493 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 02:58:54,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-18 02:58:54,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:58:54,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-18 02:58:54,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-09-18 02:58:54,494 INFO L87 Difference]: Start difference. First operand 5481 states and 19553 transitions. Second operand 6 states. [2020-09-18 02:58:54,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:58:54,623 INFO L93 Difference]: Finished difference Result 5481 states and 19549 transitions. [2020-09-18 02:58:54,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-18 02:58:54,623 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-09-18 02:58:54,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:58:54,648 INFO L225 Difference]: With dead ends: 5481 [2020-09-18 02:58:54,648 INFO L226 Difference]: Without dead ends: 5481 [2020-09-18 02:58:54,649 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-09-18 02:58:54,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5481 states. [2020-09-18 02:58:54,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5481 to 5481. [2020-09-18 02:58:54,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5481 states. [2020-09-18 02:58:54,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5481 states to 5481 states and 19549 transitions. [2020-09-18 02:58:54,820 INFO L78 Accepts]: Start accepts. Automaton has 5481 states and 19549 transitions. Word has length 9 [2020-09-18 02:58:54,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:58:54,821 INFO L479 AbstractCegarLoop]: Abstraction has 5481 states and 19549 transitions. [2020-09-18 02:58:54,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-18 02:58:54,821 INFO L276 IsEmpty]: Start isEmpty. Operand 5481 states and 19549 transitions. [2020-09-18 02:58:54,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-18 02:58:54,821 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:58:54,822 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:58:55,022 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-18 02:58:55,023 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:58:55,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:58:55,023 INFO L82 PathProgramCache]: Analyzing trace with hash 41565569, now seen corresponding path program 1 times [2020-09-18 02:58:55,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:58:55,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562690353] [2020-09-18 02:58:55,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:58:55,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:58:55,092 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-18 02:58:55,092 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562690353] [2020-09-18 02:58:55,092 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 02:58:55,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-18 02:58:55,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [384804647] [2020-09-18 02:58:55,093 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:58:55,094 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:58:55,096 INFO L274 McrAutomatonBuilder]: Finished intersection with 14 states and 13 transitions. [2020-09-18 02:58:55,096 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:58:55,096 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 02:58:55,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-18 02:58:55,097 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:58:55,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-18 02:58:55,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-18 02:58:55,097 INFO L87 Difference]: Start difference. First operand 5481 states and 19549 transitions. Second operand 4 states. [2020-09-18 02:58:55,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:58:55,141 INFO L93 Difference]: Finished difference Result 4985 states and 16961 transitions. [2020-09-18 02:58:55,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-18 02:58:55,142 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-09-18 02:58:55,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:58:55,160 INFO L225 Difference]: With dead ends: 4985 [2020-09-18 02:58:55,161 INFO L226 Difference]: Without dead ends: 4985 [2020-09-18 02:58:55,161 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-18 02:58:55,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4985 states. [2020-09-18 02:58:55,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4985 to 4793. [2020-09-18 02:58:55,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4793 states. [2020-09-18 02:58:55,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4793 states to 4793 states and 16469 transitions. [2020-09-18 02:58:55,303 INFO L78 Accepts]: Start accepts. Automaton has 4793 states and 16469 transitions. Word has length 13 [2020-09-18 02:58:55,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:58:55,303 INFO L479 AbstractCegarLoop]: Abstraction has 4793 states and 16469 transitions. [2020-09-18 02:58:55,304 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-18 02:58:55,304 INFO L276 IsEmpty]: Start isEmpty. Operand 4793 states and 16469 transitions. [2020-09-18 02:58:55,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-18 02:58:55,306 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:58:55,306 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2020-09-18 02:58:55,307 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-18 02:58:55,307 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:58:55,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:58:55,307 INFO L82 PathProgramCache]: Analyzing trace with hash -1534304145, now seen corresponding path program 1 times [2020-09-18 02:58:55,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:58:55,308 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232397739] [2020-09-18 02:58:55,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:58:55,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-18 02:58:55,323 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-18 02:58:55,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-18 02:58:55,337 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-18 02:58:55,346 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-18 02:58:55,347 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-18 02:58:55,347 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-18 02:58:55,347 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-09-18 02:58:55,348 WARN L363 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-18 02:58:55,348 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-09-18 02:58:55,358 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:55,359 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:55,359 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:55,359 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:55,359 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:55,359 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:55,360 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:55,360 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:55,360 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:55,360 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:55,361 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:55,361 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:55,361 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:55,361 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:55,361 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:55,362 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:55,362 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:55,362 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:55,362 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:55,362 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:55,362 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:55,363 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:55,363 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:55,363 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:55,363 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:55,363 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:55,363 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:55,364 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:55,364 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:55,364 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:55,364 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:55,364 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:55,364 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:55,364 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:55,365 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:55,365 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:55,365 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:55,365 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:55,366 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:55,366 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:55,372 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:55,372 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:55,372 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:55,373 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:55,373 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:55,375 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:55,375 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:55,375 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:55,375 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:55,376 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:55,377 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:55,377 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:55,378 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:55,378 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:55,378 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:55,380 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:55,380 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:55,380 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:55,380 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:55,381 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:58:55,391 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-09-18 02:58:55,392 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-18 02:58:55,392 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-18 02:58:55,392 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-18 02:58:55,392 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-18 02:58:55,393 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-18 02:58:55,393 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-18 02:58:55,393 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-18 02:58:55,393 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-18 02:58:55,395 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 99 transitions, 258 flow [2020-09-18 02:58:55,395 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 99 places, 99 transitions, 258 flow [2020-09-18 02:58:55,558 INFO L129 PetriNetUnfolder]: 189/1172 cut-off events. [2020-09-18 02:58:55,558 INFO L130 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2020-09-18 02:58:55,564 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1283 conditions, 1172 events. 189/1172 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 6706 event pairs, 23 based on Foata normal form. 0/967 useless extension candidates. Maximal degree in co-relation 658. Up to 80 conditions per place. [2020-09-18 02:58:55,629 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 99 places, 99 transitions, 258 flow [2020-09-18 02:58:55,750 INFO L129 PetriNetUnfolder]: 189/1172 cut-off events. [2020-09-18 02:58:55,750 INFO L130 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2020-09-18 02:58:55,755 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1283 conditions, 1172 events. 189/1172 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 6706 event pairs, 23 based on Foata normal form. 0/967 useless extension candidates. Maximal degree in co-relation 658. Up to 80 conditions per place. [2020-09-18 02:58:55,771 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2850 [2020-09-18 02:58:55,771 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-18 02:58:56,971 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-09-18 02:58:57,391 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2020-09-18 02:58:57,467 INFO L206 etLargeBlockEncoding]: Checked pairs total: 5971 [2020-09-18 02:58:57,467 INFO L214 etLargeBlockEncoding]: Total number of compositions: 70 [2020-09-18 02:58:57,467 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 43 places, 38 transitions, 136 flow [2020-09-18 02:58:59,678 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 26310 states. [2020-09-18 02:58:59,678 INFO L276 IsEmpty]: Start isEmpty. Operand 26310 states. [2020-09-18 02:58:59,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-09-18 02:58:59,679 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:58:59,679 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-09-18 02:58:59,679 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:58:59,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:58:59,679 INFO L82 PathProgramCache]: Analyzing trace with hash 29336307, now seen corresponding path program 1 times [2020-09-18 02:58:59,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:58:59,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511223682] [2020-09-18 02:58:59,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:58:59,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:58:59,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 02:58:59,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511223682] [2020-09-18 02:58:59,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 02:58:59,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-18 02:58:59,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1085960023] [2020-09-18 02:58:59,709 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:58:59,710 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:58:59,710 INFO L274 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-09-18 02:58:59,710 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:58:59,710 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 02:58:59,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-18 02:58:59,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:58:59,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-18 02:58:59,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 02:58:59,711 INFO L87 Difference]: Start difference. First operand 26310 states. Second operand 3 states. [2020-09-18 02:59:00,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:59:00,770 INFO L93 Difference]: Finished difference Result 26310 states and 110676 transitions. [2020-09-18 02:59:00,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-18 02:59:00,771 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-09-18 02:59:00,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:59:00,898 INFO L225 Difference]: With dead ends: 26310 [2020-09-18 02:59:00,899 INFO L226 Difference]: Without dead ends: 23184 [2020-09-18 02:59:00,899 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 02:59:01,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23184 states. [2020-09-18 02:59:01,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23184 to 23184. [2020-09-18 02:59:01,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23184 states. [2020-09-18 02:59:02,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23184 states to 23184 states and 98175 transitions. [2020-09-18 02:59:02,040 INFO L78 Accepts]: Start accepts. Automaton has 23184 states and 98175 transitions. Word has length 4 [2020-09-18 02:59:02,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:59:02,041 INFO L479 AbstractCegarLoop]: Abstraction has 23184 states and 98175 transitions. [2020-09-18 02:59:02,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-18 02:59:02,041 INFO L276 IsEmpty]: Start isEmpty. Operand 23184 states and 98175 transitions. [2020-09-18 02:59:02,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-18 02:59:02,041 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:59:02,041 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:59:02,042 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-18 02:59:02,042 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:59:02,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:59:02,042 INFO L82 PathProgramCache]: Analyzing trace with hash 805936127, now seen corresponding path program 1 times [2020-09-18 02:59:02,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:59:02,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946873834] [2020-09-18 02:59:02,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:59:02,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:59:02,083 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 02:59:02,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946873834] [2020-09-18 02:59:02,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896596981] [2020-09-18 02:59:02,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-18 02:59:02,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:59:02,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 2 conjunts are in the unsatisfiable core [2020-09-18 02:59:02,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-18 02:59:02,178 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-18 02:59:02,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-09-18 02:59:02,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2020-09-18 02:59:02,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [144704428] [2020-09-18 02:59:02,179 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:59:02,179 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:59:02,180 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-18 02:59:02,180 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:59:02,181 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 02:59:02,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-18 02:59:02,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:59:02,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-18 02:59:02,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-18 02:59:02,182 INFO L87 Difference]: Start difference. First operand 23184 states and 98175 transitions. Second operand 3 states. [2020-09-18 02:59:02,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:59:02,330 INFO L93 Difference]: Finished difference Result 26309 states and 110675 transitions. [2020-09-18 02:59:02,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-18 02:59:02,331 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-18 02:59:02,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:59:02,437 INFO L225 Difference]: With dead ends: 26309 [2020-09-18 02:59:02,437 INFO L226 Difference]: Without dead ends: 26309 [2020-09-18 02:59:02,438 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-18 02:59:02,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26309 states. [2020-09-18 02:59:04,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26309 to 26309. [2020-09-18 02:59:04,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26309 states. [2020-09-18 02:59:04,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26309 states to 26309 states and 110675 transitions. [2020-09-18 02:59:04,666 INFO L78 Accepts]: Start accepts. Automaton has 26309 states and 110675 transitions. Word has length 8 [2020-09-18 02:59:04,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:59:04,666 INFO L479 AbstractCegarLoop]: Abstraction has 26309 states and 110675 transitions. [2020-09-18 02:59:04,666 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-18 02:59:04,666 INFO L276 IsEmpty]: Start isEmpty. Operand 26309 states and 110675 transitions. [2020-09-18 02:59:04,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-18 02:59:04,666 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:59:04,667 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:59:04,867 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-09-18 02:59:04,868 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:59:04,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:59:04,868 INFO L82 PathProgramCache]: Analyzing trace with hash -785782832, now seen corresponding path program 1 times [2020-09-18 02:59:04,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:59:04,869 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483745898] [2020-09-18 02:59:04,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:59:04,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:59:04,904 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-18 02:59:04,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483745898] [2020-09-18 02:59:04,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772169336] [2020-09-18 02:59:04,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-18 02:59:04,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:59:04,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 4 conjunts are in the unsatisfiable core [2020-09-18 02:59:04,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-18 02:59:04,995 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-18 02:59:04,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-18 02:59:04,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2020-09-18 02:59:04,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [13242441] [2020-09-18 02:59:04,996 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:59:04,997 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:59:04,997 INFO L274 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-09-18 02:59:04,997 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:59:04,998 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 02:59:04,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-18 02:59:04,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:59:04,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-18 02:59:04,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-09-18 02:59:04,998 INFO L87 Difference]: Start difference. First operand 26309 states and 110675 transitions. Second operand 6 states. [2020-09-18 02:59:05,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:59:05,458 INFO L93 Difference]: Finished difference Result 26309 states and 110671 transitions. [2020-09-18 02:59:05,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-18 02:59:05,459 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-09-18 02:59:05,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:59:05,570 INFO L225 Difference]: With dead ends: 26309 [2020-09-18 02:59:05,571 INFO L226 Difference]: Without dead ends: 26309 [2020-09-18 02:59:05,571 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-09-18 02:59:05,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26309 states. [2020-09-18 02:59:06,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26309 to 26309. [2020-09-18 02:59:06,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26309 states. [2020-09-18 02:59:08,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26309 states to 26309 states and 110671 transitions. [2020-09-18 02:59:08,025 INFO L78 Accepts]: Start accepts. Automaton has 26309 states and 110671 transitions. Word has length 9 [2020-09-18 02:59:08,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:59:08,026 INFO L479 AbstractCegarLoop]: Abstraction has 26309 states and 110671 transitions. [2020-09-18 02:59:08,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-18 02:59:08,026 INFO L276 IsEmpty]: Start isEmpty. Operand 26309 states and 110671 transitions. [2020-09-18 02:59:08,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-18 02:59:08,026 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:59:08,027 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:59:08,233 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-18 02:59:08,234 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:59:08,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:59:08,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1486090629, now seen corresponding path program 1 times [2020-09-18 02:59:08,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:59:08,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153034839] [2020-09-18 02:59:08,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:59:08,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:59:08,302 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-18 02:59:08,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153034839] [2020-09-18 02:59:08,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 02:59:08,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-18 02:59:08,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1661020186] [2020-09-18 02:59:08,304 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:59:08,305 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:59:08,306 INFO L274 McrAutomatonBuilder]: Finished intersection with 14 states and 13 transitions. [2020-09-18 02:59:08,306 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:59:08,306 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 02:59:08,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-18 02:59:08,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:59:08,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-18 02:59:08,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-18 02:59:08,308 INFO L87 Difference]: Start difference. First operand 26309 states and 110671 transitions. Second operand 4 states. [2020-09-18 02:59:08,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:59:08,463 INFO L93 Difference]: Finished difference Result 24533 states and 99507 transitions. [2020-09-18 02:59:08,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-18 02:59:08,463 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-09-18 02:59:08,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:59:08,530 INFO L225 Difference]: With dead ends: 24533 [2020-09-18 02:59:08,530 INFO L226 Difference]: Without dead ends: 24533 [2020-09-18 02:59:08,531 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-18 02:59:08,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24533 states. [2020-09-18 02:59:09,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24533 to 23573. [2020-09-18 02:59:09,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23573 states. [2020-09-18 02:59:09,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23573 states to 23573 states and 96327 transitions. [2020-09-18 02:59:09,372 INFO L78 Accepts]: Start accepts. Automaton has 23573 states and 96327 transitions. Word has length 13 [2020-09-18 02:59:09,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:59:09,373 INFO L479 AbstractCegarLoop]: Abstraction has 23573 states and 96327 transitions. [2020-09-18 02:59:09,373 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-18 02:59:09,373 INFO L276 IsEmpty]: Start isEmpty. Operand 23573 states and 96327 transitions. [2020-09-18 02:59:09,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-18 02:59:09,376 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:59:09,377 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:59:09,377 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-18 02:59:09,377 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:59:09,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:59:09,377 INFO L82 PathProgramCache]: Analyzing trace with hash 81754288, now seen corresponding path program 1 times [2020-09-18 02:59:09,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:59:09,378 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069786490] [2020-09-18 02:59:09,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:59:09,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:59:09,432 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-18 02:59:09,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069786490] [2020-09-18 02:59:09,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758585026] [2020-09-18 02:59:09,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-18 02:59:09,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:59:09,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjunts are in the unsatisfiable core [2020-09-18 02:59:09,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-18 02:59:09,550 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-18 02:59:09,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-18 02:59:09,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2020-09-18 02:59:09,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1557883850] [2020-09-18 02:59:09,551 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:59:09,554 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:59:09,560 INFO L274 McrAutomatonBuilder]: Finished intersection with 31 states and 40 transitions. [2020-09-18 02:59:09,561 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:59:09,675 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 02:59:09,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-18 02:59:09,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:59:09,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-18 02:59:09,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2020-09-18 02:59:09,677 INFO L87 Difference]: Start difference. First operand 23573 states and 96327 transitions. Second operand 8 states. [2020-09-18 02:59:10,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:59:10,038 INFO L93 Difference]: Finished difference Result 23557 states and 96271 transitions. [2020-09-18 02:59:10,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-18 02:59:10,039 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-09-18 02:59:10,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:59:10,130 INFO L225 Difference]: With dead ends: 23557 [2020-09-18 02:59:10,131 INFO L226 Difference]: Without dead ends: 23557 [2020-09-18 02:59:10,131 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 6 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2020-09-18 02:59:10,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23557 states. [2020-09-18 02:59:10,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23557 to 23557. [2020-09-18 02:59:10,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23557 states. [2020-09-18 02:59:11,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23557 states to 23557 states and 96271 transitions. [2020-09-18 02:59:11,049 INFO L78 Accepts]: Start accepts. Automaton has 23557 states and 96271 transitions. Word has length 20 [2020-09-18 02:59:11,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 02:59:11,049 INFO L479 AbstractCegarLoop]: Abstraction has 23557 states and 96271 transitions. [2020-09-18 02:59:11,049 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-18 02:59:11,049 INFO L276 IsEmpty]: Start isEmpty. Operand 23557 states and 96271 transitions. [2020-09-18 02:59:11,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-18 02:59:11,056 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:59:11,056 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 02:59:11,256 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-18 02:59:11,257 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:59:11,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:59:11,258 INFO L82 PathProgramCache]: Analyzing trace with hash -1012463302, now seen corresponding path program 1 times [2020-09-18 02:59:11,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:59:11,259 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038358113] [2020-09-18 02:59:11,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:59:11,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-18 02:59:11,292 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-18 02:59:11,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-18 02:59:11,306 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-18 02:59:11,316 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-18 02:59:11,316 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-18 02:59:11,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-09-18 02:59:11,317 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-09-18 02:59:11,317 WARN L363 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-18 02:59:11,318 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2020-09-18 02:59:11,326 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:59:11,327 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:59:11,327 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:59:11,327 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:59:11,327 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:59:11,327 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:59:11,328 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:59:11,328 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:59:11,328 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:59:11,328 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:59:11,328 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:59:11,328 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:59:11,329 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:59:11,329 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:59:11,329 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:59:11,329 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:59:11,329 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:59:11,329 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:59:11,330 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:59:11,330 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:59:11,330 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:59:11,330 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:59:11,330 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:59:11,330 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:59:11,330 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:59:11,331 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:59:11,331 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:59:11,331 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:59:11,331 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:59:11,331 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:59:11,331 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:59:11,332 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:59:11,332 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:59:11,332 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:59:11,332 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:59:11,332 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:59:11,332 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:59:11,332 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:59:11,333 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:59:11,333 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:59:11,333 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:59:11,333 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:59:11,333 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:59:11,334 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:59:11,334 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:59:11,334 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:59:11,334 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:59:11,335 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:59:11,336 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:59:11,336 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:59:11,336 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:59:11,336 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:59:11,337 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:59:11,337 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:59:11,338 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:59:11,338 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:59:11,338 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:59:11,339 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:59:11,339 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:59:11,339 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:59:11,339 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:59:11,340 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:59:11,341 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:59:11,341 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:59:11,341 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:59:11,341 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:59:11,341 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:59:11,343 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:59:11,343 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:59:11,343 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:59:11,343 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:59:11,343 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 02:59:11,348 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-09-18 02:59:11,349 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-18 02:59:11,349 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-18 02:59:11,349 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-18 02:59:11,349 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-18 02:59:11,349 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-18 02:59:11,349 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-18 02:59:11,350 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-18 02:59:11,350 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-18 02:59:11,351 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 107 places, 106 transitions, 290 flow [2020-09-18 02:59:11,351 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 107 places, 106 transitions, 290 flow [2020-09-18 02:59:11,675 INFO L129 PetriNetUnfolder]: 399/2291 cut-off events. [2020-09-18 02:59:11,675 INFO L130 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2020-09-18 02:59:11,686 INFO L80 FinitePrefix]: Finished finitePrefix Result has 2523 conditions, 2291 events. 399/2291 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 16164 event pairs, 72 based on Foata normal form. 0/1892 useless extension candidates. Maximal degree in co-relation 1271. Up to 192 conditions per place. [2020-09-18 02:59:11,726 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 107 places, 106 transitions, 290 flow [2020-09-18 02:59:12,012 INFO L129 PetriNetUnfolder]: 399/2291 cut-off events. [2020-09-18 02:59:12,012 INFO L130 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2020-09-18 02:59:12,023 INFO L80 FinitePrefix]: Finished finitePrefix Result has 2523 conditions, 2291 events. 399/2291 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 16164 event pairs, 72 based on Foata normal form. 0/1892 useless extension candidates. Maximal degree in co-relation 1271. Up to 192 conditions per place. [2020-09-18 02:59:12,075 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 3660 [2020-09-18 02:59:12,076 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-18 02:59:12,942 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-09-18 02:59:13,328 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2020-09-18 02:59:13,781 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-09-18 02:59:13,886 INFO L206 etLargeBlockEncoding]: Checked pairs total: 8653 [2020-09-18 02:59:13,886 INFO L214 etLargeBlockEncoding]: Total number of compositions: 71 [2020-09-18 02:59:13,886 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 49 places, 43 transitions, 164 flow [2020-09-18 02:59:50,051 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 127122 states. [2020-09-18 02:59:50,052 INFO L276 IsEmpty]: Start isEmpty. Operand 127122 states. [2020-09-18 02:59:50,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-09-18 02:59:50,052 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 02:59:50,052 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-09-18 02:59:50,052 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 02:59:50,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 02:59:50,053 INFO L82 PathProgramCache]: Analyzing trace with hash 35155697, now seen corresponding path program 1 times [2020-09-18 02:59:50,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 02:59:50,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635558821] [2020-09-18 02:59:50,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 02:59:50,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 02:59:50,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 02:59:50,085 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635558821] [2020-09-18 02:59:50,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 02:59:50,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-18 02:59:50,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1416935710] [2020-09-18 02:59:50,086 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 02:59:50,086 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 02:59:50,086 INFO L274 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-09-18 02:59:50,086 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 02:59:50,087 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 02:59:50,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-18 02:59:50,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 02:59:50,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-18 02:59:50,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 02:59:50,088 INFO L87 Difference]: Start difference. First operand 127122 states. Second operand 3 states. [2020-09-18 02:59:51,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 02:59:51,732 INFO L93 Difference]: Finished difference Result 127122 states and 615398 transitions. [2020-09-18 02:59:51,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-18 02:59:51,732 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-09-18 02:59:51,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 02:59:52,189 INFO L225 Difference]: With dead ends: 127122 [2020-09-18 02:59:52,189 INFO L226 Difference]: Without dead ends: 111496 [2020-09-18 02:59:52,189 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 02:59:55,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111496 states. [2020-09-18 02:59:59,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111496 to 111496. [2020-09-18 02:59:59,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111496 states. [2020-09-18 03:00:06,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111496 states to 111496 states and 543522 transitions. [2020-09-18 03:00:06,222 INFO L78 Accepts]: Start accepts. Automaton has 111496 states and 543522 transitions. Word has length 4 [2020-09-18 03:00:06,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 03:00:06,222 INFO L479 AbstractCegarLoop]: Abstraction has 111496 states and 543522 transitions. [2020-09-18 03:00:06,222 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-18 03:00:06,223 INFO L276 IsEmpty]: Start isEmpty. Operand 111496 states and 543522 transitions. [2020-09-18 03:00:06,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-18 03:00:06,223 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 03:00:06,223 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 03:00:06,223 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-09-18 03:00:06,224 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 03:00:06,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 03:00:06,224 INFO L82 PathProgramCache]: Analyzing trace with hash -1170285684, now seen corresponding path program 1 times [2020-09-18 03:00:06,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 03:00:06,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500568139] [2020-09-18 03:00:06,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 03:00:06,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 03:00:06,255 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 03:00:06,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500568139] [2020-09-18 03:00:06,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385823507] [2020-09-18 03:00:06,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-18 03:00:06,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 03:00:06,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 2 conjunts are in the unsatisfiable core [2020-09-18 03:00:06,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-18 03:00:06,326 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-18 03:00:06,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-09-18 03:00:06,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2020-09-18 03:00:06,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1893068363] [2020-09-18 03:00:06,327 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 03:00:06,328 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 03:00:06,328 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-18 03:00:06,328 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 03:00:06,329 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 03:00:06,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-18 03:00:06,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 03:00:06,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-18 03:00:06,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-18 03:00:06,330 INFO L87 Difference]: Start difference. First operand 111496 states and 543522 transitions. Second operand 3 states. [2020-09-18 03:00:08,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 03:00:08,308 INFO L93 Difference]: Finished difference Result 127121 states and 615397 transitions. [2020-09-18 03:00:08,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-18 03:00:08,308 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-18 03:00:08,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 03:00:08,809 INFO L225 Difference]: With dead ends: 127121 [2020-09-18 03:00:08,809 INFO L226 Difference]: Without dead ends: 127121 [2020-09-18 03:00:08,809 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-18 03:00:17,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127121 states. [2020-09-18 03:00:20,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127121 to 127121. [2020-09-18 03:00:20,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127121 states. [2020-09-18 03:00:21,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127121 states to 127121 states and 615397 transitions. [2020-09-18 03:00:21,434 INFO L78 Accepts]: Start accepts. Automaton has 127121 states and 615397 transitions. Word has length 8 [2020-09-18 03:00:21,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 03:00:21,434 INFO L479 AbstractCegarLoop]: Abstraction has 127121 states and 615397 transitions. [2020-09-18 03:00:21,434 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-18 03:00:21,435 INFO L276 IsEmpty]: Start isEmpty. Operand 127121 states and 615397 transitions. [2020-09-18 03:00:21,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-18 03:00:21,435 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 03:00:21,435 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 03:00:21,635 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-18 03:00:21,636 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 03:00:21,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 03:00:21,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1919116790, now seen corresponding path program 1 times [2020-09-18 03:00:21,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 03:00:21,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095354249] [2020-09-18 03:00:21,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 03:00:21,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 03:00:21,687 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-18 03:00:21,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095354249] [2020-09-18 03:00:21,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974708196] [2020-09-18 03:00:21,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-18 03:00:21,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 03:00:21,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 4 conjunts are in the unsatisfiable core [2020-09-18 03:00:21,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-18 03:00:21,810 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-18 03:00:21,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-18 03:00:21,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2020-09-18 03:00:21,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1615537578] [2020-09-18 03:00:21,812 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 03:00:21,812 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 03:00:21,813 INFO L274 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-09-18 03:00:21,813 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 03:00:21,813 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 03:00:21,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-18 03:00:21,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 03:00:21,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-18 03:00:21,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-09-18 03:00:21,814 INFO L87 Difference]: Start difference. First operand 127121 states and 615397 transitions. Second operand 6 states. [2020-09-18 03:00:28,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 03:00:28,683 INFO L93 Difference]: Finished difference Result 127121 states and 615393 transitions. [2020-09-18 03:00:28,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-18 03:00:28,683 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-09-18 03:00:28,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 03:00:29,214 INFO L225 Difference]: With dead ends: 127121 [2020-09-18 03:00:29,214 INFO L226 Difference]: Without dead ends: 127121 [2020-09-18 03:00:29,214 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-09-18 03:00:32,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127121 states. [2020-09-18 03:00:34,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127121 to 127121. [2020-09-18 03:00:34,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127121 states. [2020-09-18 03:00:36,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127121 states to 127121 states and 615393 transitions. [2020-09-18 03:00:36,075 INFO L78 Accepts]: Start accepts. Automaton has 127121 states and 615393 transitions. Word has length 9 [2020-09-18 03:00:36,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 03:00:36,075 INFO L479 AbstractCegarLoop]: Abstraction has 127121 states and 615393 transitions. [2020-09-18 03:00:36,076 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-18 03:00:36,076 INFO L276 IsEmpty]: Start isEmpty. Operand 127121 states and 615393 transitions. [2020-09-18 03:00:36,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-18 03:00:36,076 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 03:00:36,076 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 03:00:36,277 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-09-18 03:00:36,277 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 03:00:36,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 03:00:36,278 INFO L82 PathProgramCache]: Analyzing trace with hash -2046881392, now seen corresponding path program 1 times [2020-09-18 03:00:36,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 03:00:36,279 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357160941] [2020-09-18 03:00:36,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 03:00:36,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 03:00:36,325 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-18 03:00:36,325 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357160941] [2020-09-18 03:00:36,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 03:00:36,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-18 03:00:36,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [803537191] [2020-09-18 03:00:36,326 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 03:00:36,327 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 03:00:36,328 INFO L274 McrAutomatonBuilder]: Finished intersection with 14 states and 13 transitions. [2020-09-18 03:00:36,328 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 03:00:36,328 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 03:00:36,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-18 03:00:36,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 03:00:36,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-18 03:00:36,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-18 03:00:36,330 INFO L87 Difference]: Start difference. First operand 127121 states and 615393 transitions. Second operand 4 states. [2020-09-18 03:00:37,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 03:00:37,132 INFO L93 Difference]: Finished difference Result 120737 states and 568389 transitions. [2020-09-18 03:00:37,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-18 03:00:37,133 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-09-18 03:00:37,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 03:00:43,862 INFO L225 Difference]: With dead ends: 120737 [2020-09-18 03:00:43,862 INFO L226 Difference]: Without dead ends: 120737 [2020-09-18 03:00:43,863 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-18 03:00:46,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120737 states. [2020-09-18 03:00:48,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120737 to 116193. [2020-09-18 03:00:48,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116193 states. [2020-09-18 03:00:49,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116193 states to 116193 states and 549849 transitions. [2020-09-18 03:00:49,177 INFO L78 Accepts]: Start accepts. Automaton has 116193 states and 549849 transitions. Word has length 13 [2020-09-18 03:00:49,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 03:00:49,177 INFO L479 AbstractCegarLoop]: Abstraction has 116193 states and 549849 transitions. [2020-09-18 03:00:49,177 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-18 03:00:49,177 INFO L276 IsEmpty]: Start isEmpty. Operand 116193 states and 549849 transitions. [2020-09-18 03:00:49,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-18 03:00:49,180 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 03:00:49,180 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 03:00:49,180 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-09-18 03:00:49,180 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 03:00:49,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 03:00:49,181 INFO L82 PathProgramCache]: Analyzing trace with hash 173719339, now seen corresponding path program 1 times [2020-09-18 03:00:49,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 03:00:49,181 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294905725] [2020-09-18 03:00:49,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 03:00:49,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 03:00:49,234 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-18 03:00:49,234 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294905725] [2020-09-18 03:00:49,234 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229563850] [2020-09-18 03:00:49,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-18 03:00:49,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 03:00:49,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjunts are in the unsatisfiable core [2020-09-18 03:00:49,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-18 03:00:49,356 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-18 03:00:49,356 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-18 03:00:49,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2020-09-18 03:00:49,357 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1008428263] [2020-09-18 03:00:49,357 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 03:00:49,359 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 03:00:49,363 INFO L274 McrAutomatonBuilder]: Finished intersection with 33 states and 44 transitions. [2020-09-18 03:00:49,364 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 03:00:49,435 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 03:00:49,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-18 03:00:49,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 03:00:49,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-18 03:00:49,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2020-09-18 03:00:49,438 INFO L87 Difference]: Start difference. First operand 116193 states and 549849 transitions. Second operand 8 states. [2020-09-18 03:00:51,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 03:00:51,502 INFO L93 Difference]: Finished difference Result 116177 states and 549793 transitions. [2020-09-18 03:00:51,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-18 03:00:51,503 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-09-18 03:00:51,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 03:00:51,967 INFO L225 Difference]: With dead ends: 116177 [2020-09-18 03:00:51,967 INFO L226 Difference]: Without dead ends: 116177 [2020-09-18 03:00:51,968 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 34 SyntacticMatches, 7 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2020-09-18 03:01:00,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116177 states. [2020-09-18 03:01:02,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116177 to 116177. [2020-09-18 03:01:02,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116177 states. [2020-09-18 03:01:03,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116177 states to 116177 states and 549793 transitions. [2020-09-18 03:01:03,729 INFO L78 Accepts]: Start accepts. Automaton has 116177 states and 549793 transitions. Word has length 20 [2020-09-18 03:01:03,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 03:01:03,730 INFO L479 AbstractCegarLoop]: Abstraction has 116177 states and 549793 transitions. [2020-09-18 03:01:03,730 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-18 03:01:03,730 INFO L276 IsEmpty]: Start isEmpty. Operand 116177 states and 549793 transitions. [2020-09-18 03:01:03,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-18 03:01:03,738 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 03:01:03,738 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 03:01:03,952 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-09-18 03:01:03,953 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 03:01:03,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 03:01:03,953 INFO L82 PathProgramCache]: Analyzing trace with hash -999416206, now seen corresponding path program 1 times [2020-09-18 03:01:03,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 03:01:03,954 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712992622] [2020-09-18 03:01:03,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 03:01:03,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 03:01:04,052 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-18 03:01:04,053 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712992622] [2020-09-18 03:01:04,053 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152052098] [2020-09-18 03:01:04,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-18 03:01:04,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 03:01:04,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-18 03:01:04,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-18 03:01:04,210 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-18 03:01:04,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-18 03:01:04,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5] total 8 [2020-09-18 03:01:04,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [468350098] [2020-09-18 03:01:04,211 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 03:01:04,214 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 03:01:04,220 INFO L274 McrAutomatonBuilder]: Finished intersection with 41 states and 56 transitions. [2020-09-18 03:01:04,220 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 03:01:04,318 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 03:01:04,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-18 03:01:04,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 03:01:04,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-18 03:01:04,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=38, Unknown=0, NotChecked=0, Total=72 [2020-09-18 03:01:04,319 INFO L87 Difference]: Start difference. First operand 116177 states and 549793 transitions. Second operand 9 states. [2020-09-18 03:01:04,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 03:01:04,978 INFO L93 Difference]: Finished difference Result 94230 states and 434726 transitions. [2020-09-18 03:01:04,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-18 03:01:04,979 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2020-09-18 03:01:04,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 03:01:05,299 INFO L225 Difference]: With dead ends: 94230 [2020-09-18 03:01:05,299 INFO L226 Difference]: Without dead ends: 94230 [2020-09-18 03:01:05,300 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 44 SyntacticMatches, 7 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=38, Unknown=0, NotChecked=0, Total=72 [2020-09-18 03:01:12,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94230 states. [2020-09-18 03:01:14,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94230 to 94012. [2020-09-18 03:01:14,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94012 states. [2020-09-18 03:01:14,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94012 states to 94012 states and 434318 transitions. [2020-09-18 03:01:14,697 INFO L78 Accepts]: Start accepts. Automaton has 94012 states and 434318 transitions. Word has length 24 [2020-09-18 03:01:14,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 03:01:14,698 INFO L479 AbstractCegarLoop]: Abstraction has 94012 states and 434318 transitions. [2020-09-18 03:01:14,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-18 03:01:14,698 INFO L276 IsEmpty]: Start isEmpty. Operand 94012 states and 434318 transitions. [2020-09-18 03:01:14,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-18 03:01:14,714 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 03:01:14,715 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 03:01:14,928 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-09-18 03:01:14,929 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 03:01:14,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 03:01:14,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1963695170, now seen corresponding path program 1 times [2020-09-18 03:01:14,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 03:01:14,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019379013] [2020-09-18 03:01:14,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 03:01:14,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-18 03:01:14,949 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-18 03:01:14,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-18 03:01:14,966 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-18 03:01:14,983 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-18 03:01:14,983 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-18 03:01:14,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-09-18 03:01:14,984 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-09-18 03:01:14,986 WARN L363 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-18 03:01:14,986 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2020-09-18 03:01:14,998 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:14,998 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:14,998 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:14,998 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:14,999 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:14,999 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:14,999 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:14,999 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:14,999 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:14,999 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:14,999 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:15,000 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:15,000 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:15,000 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:15,000 WARN L313 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:15,000 WARN L313 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:15,000 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:15,000 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:15,001 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:15,001 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:15,001 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:15,001 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:15,001 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:15,001 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:15,002 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:15,002 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:15,002 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:15,002 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:15,002 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:15,002 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:15,003 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:15,003 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:15,003 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:15,003 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:15,003 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:15,003 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:15,004 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:15,004 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:15,004 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:15,004 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:15,004 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:15,004 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:15,004 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:15,005 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:15,005 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:15,005 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:15,005 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:15,005 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:15,005 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:15,006 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:15,006 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:15,006 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:15,006 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:15,006 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:15,008 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:15,008 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:15,008 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:15,008 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:15,008 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:15,009 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:15,010 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:15,010 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:15,010 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:15,010 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:15,011 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:15,011 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:15,012 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:15,012 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:15,012 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:15,013 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:15,013 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:15,014 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:15,014 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:15,014 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:15,015 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:15,015 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:15,015 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:15,016 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:15,016 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:15,017 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:15,018 WARN L313 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:15,018 WARN L313 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:15,018 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:15,018 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:01:15,024 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-09-18 03:01:15,025 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-18 03:01:15,025 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-18 03:01:15,025 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-18 03:01:15,025 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-18 03:01:15,025 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-18 03:01:15,025 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-18 03:01:15,025 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-18 03:01:15,026 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-18 03:01:15,027 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 115 places, 113 transitions, 324 flow [2020-09-18 03:01:15,027 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 115 places, 113 transitions, 324 flow [2020-09-18 03:01:16,428 INFO L129 PetriNetUnfolder]: 849/4546 cut-off events. [2020-09-18 03:01:16,428 INFO L130 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2020-09-18 03:01:16,447 INFO L80 FinitePrefix]: Finished finitePrefix Result has 5044 conditions, 4546 events. 849/4546 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 38350 event pairs, 201 based on Foata normal form. 0/3761 useless extension candidates. Maximal degree in co-relation 2509. Up to 448 conditions per place. [2020-09-18 03:01:16,530 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 115 places, 113 transitions, 324 flow [2020-09-18 03:01:16,981 INFO L129 PetriNetUnfolder]: 849/4546 cut-off events. [2020-09-18 03:01:16,981 INFO L130 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2020-09-18 03:01:16,999 INFO L80 FinitePrefix]: Finished finitePrefix Result has 5044 conditions, 4546 events. 849/4546 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 38350 event pairs, 201 based on Foata normal form. 0/3761 useless extension candidates. Maximal degree in co-relation 2509. Up to 448 conditions per place. [2020-09-18 03:01:17,061 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 4550 [2020-09-18 03:01:17,061 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-18 03:01:18,799 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-09-18 03:01:18,906 INFO L206 etLargeBlockEncoding]: Checked pairs total: 11131 [2020-09-18 03:01:18,906 INFO L214 etLargeBlockEncoding]: Total number of compositions: 75 [2020-09-18 03:01:18,907 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 55 places, 48 transitions, 194 flow