/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/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:38:32,535 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:38:32,538 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:38:32,565 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:38:32,566 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:38:32,567 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:38:32,568 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:38:32,571 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:38:32,572 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:38:32,573 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:38:32,575 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:38:32,576 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:38:32,576 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:38:32,577 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:38:32,579 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:38:32,580 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:38:32,581 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:38:32,582 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:38:32,584 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:38:32,586 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:38:32,588 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:38:32,589 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:38:32,590 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:38:32,591 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:38:32,594 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:38:32,594 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:38:32,594 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:38:32,596 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:38:32,596 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:38:32,597 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:38:32,598 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:38:32,599 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:38:32,599 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:38:32,600 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:38:32,602 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:38:32,602 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:38:32,603 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:38:32,603 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:38:32,603 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:38:32,604 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:38:32,605 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:38:32,606 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-21 12:38:32,653 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:38:32,653 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:38:32,655 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:38:32,655 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:38:32,655 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:38:32,655 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:38:32,655 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:38:32,657 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:38:32,657 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:38:32,657 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:38:32,658 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:38:32,658 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:38:32,658 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:38:32,658 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:38:32,658 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:38:32,659 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:38:32,660 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:38:32,660 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:38:32,660 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:38:32,660 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:38:32,661 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:38:32,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:38:32,661 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:38:32,661 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:38:32,661 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:38:32,662 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:38:32,662 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:38:32,663 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:38:32,663 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:38:32,663 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-21 12:38:33,170 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:38:33,196 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:38:33,201 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:38:33,203 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:38:33,203 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:38:33,205 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-09-21 12:38:33,294 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3e11b0e95/c0b92c6d6d5945618abd1de78de80b61/FLAGc6ae524f4 [2020-09-21 12:38:33,940 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:38:33,941 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-09-21 12:38:33,968 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3e11b0e95/c0b92c6d6d5945618abd1de78de80b61/FLAGc6ae524f4 [2020-09-21 12:38:34,163 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3e11b0e95/c0b92c6d6d5945618abd1de78de80b61 [2020-09-21 12:38:34,178 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:38:34,184 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:38:34,185 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:38:34,185 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:38:34,190 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:38:34,191 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:38:34" (1/1) ... [2020-09-21 12:38:34,195 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17866592 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:38:34, skipping insertion in model container [2020-09-21 12:38:34,196 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:38:34" (1/1) ... [2020-09-21 12:38:34,205 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:38:34,288 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:38:34,991 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:38:35,019 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:38:35,532 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:38:35,556 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:38:35,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:38:35 WrapperNode [2020-09-21 12:38:35,556 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:38:35,558 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:38:35,558 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:38:35,558 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:38:35,575 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:38:35" (1/1) ... [2020-09-21 12:38:35,576 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:38:35" (1/1) ... [2020-09-21 12:38:35,597 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:38:35" (1/1) ... [2020-09-21 12:38:35,598 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:38:35" (1/1) ... [2020-09-21 12:38:35,633 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:38:35" (1/1) ... [2020-09-21 12:38:35,676 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:38:35" (1/1) ... [2020-09-21 12:38:35,691 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:38:35" (1/1) ... [2020-09-21 12:38:35,706 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:38:35,708 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:38:35,712 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:38:35,712 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:38:35,713 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:38:35" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:38:35,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:38:35,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:38:35,814 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-21 12:38:35,815 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:38:35,815 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:38:35,815 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-21 12:38:35,816 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-21 12:38:35,816 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-21 12:38:35,817 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-21 12:38:35,817 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-21 12:38:35,817 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-21 12:38:35,818 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-21 12:38:35,818 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-21 12:38:35,818 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-21 12:38:35,819 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-21 12:38:35,820 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-21 12:38:35,820 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-21 12:38:35,820 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:38:35,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:38:35,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:38:37,721 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:38:37,722 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-21 12:38:37,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:38:37 BoogieIcfgContainer [2020-09-21 12:38:37,739 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:38:37,743 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:38:37,743 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:38:37,748 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:38:37,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:38:34" (1/3) ... [2020-09-21 12:38:37,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d264860 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:38:37, skipping insertion in model container [2020-09-21 12:38:37,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:38:35" (2/3) ... [2020-09-21 12:38:37,751 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d264860 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:38:37, skipping insertion in model container [2020-09-21 12:38:37,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:38:37" (3/3) ... [2020-09-21 12:38:37,756 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-09-21 12:38:37,768 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:38:37,788 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-09-21 12:38:37,807 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-09-21 12:38:37,839 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:38:37,840 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:38:37,840 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:38:37,840 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:38:37,840 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:38:37,840 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:38:37,840 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:38:37,840 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:38:37,872 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states. [2020-09-21 12:38:37,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-09-21 12:38:37,893 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:38:37,894 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:38:37,895 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:38:37,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:38:37,903 INFO L82 PathProgramCache]: Analyzing trace with hash 604537660, now seen corresponding path program 1 times [2020-09-21 12:38:37,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:38:37,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1293818156] [2020-09-21 12:38:37,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:38:38,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:38,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:38,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:39,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:39,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:39,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-09-21 12:38:39,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:38:39,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1009 [2020-09-21 12:38:39,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:39,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:38:39,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-09-21 12:38:39,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-21 12:38:39,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-21 12:38:39,946 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-09-21 12:38:39,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:38:39,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:39,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:39,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:39,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:38:39,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:38:39,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-21 12:38:39,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:39,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:38:39,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:38:39,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:38:39,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:38:40,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:38:40,080 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1293818156] [2020-09-21 12:38:40,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:38:40,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:38:40,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098017250] [2020-09-21 12:38:40,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:38:40,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:38:40,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:38:40,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:38:40,112 INFO L87 Difference]: Start difference. First operand 412 states. Second operand 4 states. [2020-09-21 12:38:40,454 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-09-21 12:38:43,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:38:43,383 INFO L93 Difference]: Finished difference Result 754 states and 1320 transitions. [2020-09-21 12:38:43,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:38:43,385 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 146 [2020-09-21 12:38:43,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:38:43,425 INFO L225 Difference]: With dead ends: 754 [2020-09-21 12:38:43,425 INFO L226 Difference]: Without dead ends: 593 [2020-09-21 12:38:43,431 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:38:43,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2020-09-21 12:38:43,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 591. [2020-09-21 12:38:43,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states. [2020-09-21 12:38:43,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 870 transitions. [2020-09-21 12:38:43,542 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 870 transitions. Word has length 146 [2020-09-21 12:38:43,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:38:43,543 INFO L479 AbstractCegarLoop]: Abstraction has 591 states and 870 transitions. [2020-09-21 12:38:43,544 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:38:43,544 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 870 transitions. [2020-09-21 12:38:43,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-09-21 12:38:43,555 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:38:43,555 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:38:43,555 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:38:43,556 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:38:43,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:38:43,556 INFO L82 PathProgramCache]: Analyzing trace with hash 694944860, now seen corresponding path program 1 times [2020-09-21 12:38:43,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:38:43,557 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1406922129] [2020-09-21 12:38:43,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:38:43,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:43,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:44,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:44,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:44,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:44,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:44,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:44,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-09-21 12:38:44,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-21 12:38:44,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1054 [2020-09-21 12:38:44,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:44,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:38:44,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-09-21 12:38:44,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-09-21 12:38:44,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-21 12:38:45,121 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-09-21 12:38:45,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:38:45,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:45,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:45,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:45,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:38:45,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:38:45,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-21 12:38:45,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:45,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:38:45,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:38:45,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:38:45,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:38:45,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:38:45,272 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1406922129] [2020-09-21 12:38:45,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:38:45,273 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:38:45,273 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067476019] [2020-09-21 12:38:45,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:38:45,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:38:45,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:38:45,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:38:45,278 INFO L87 Difference]: Start difference. First operand 591 states and 870 transitions. Second operand 4 states. [2020-09-21 12:38:45,592 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-09-21 12:38:47,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:38:47,842 INFO L93 Difference]: Finished difference Result 1190 states and 1805 transitions. [2020-09-21 12:38:47,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:38:47,843 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 146 [2020-09-21 12:38:47,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:38:47,854 INFO L225 Difference]: With dead ends: 1190 [2020-09-21 12:38:47,855 INFO L226 Difference]: Without dead ends: 961 [2020-09-21 12:38:47,858 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:38:47,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2020-09-21 12:38:47,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 959. [2020-09-21 12:38:47,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 959 states. [2020-09-21 12:38:47,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1434 transitions. [2020-09-21 12:38:47,912 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1434 transitions. Word has length 146 [2020-09-21 12:38:47,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:38:47,913 INFO L479 AbstractCegarLoop]: Abstraction has 959 states and 1434 transitions. [2020-09-21 12:38:47,913 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:38:47,914 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1434 transitions. [2020-09-21 12:38:47,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-09-21 12:38:47,917 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:38:47,917 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:38:47,918 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:38:47,918 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:38:47,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:38:47,918 INFO L82 PathProgramCache]: Analyzing trace with hash -1369993092, now seen corresponding path program 1 times [2020-09-21 12:38:47,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:38:47,919 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1942519021] [2020-09-21 12:38:47,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:38:48,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:48,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:48,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:48,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:48,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:48,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:49,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:49,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-09-21 12:38:49,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-21 12:38:49,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1006 [2020-09-21 12:38:49,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:49,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:38:49,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-09-21 12:38:49,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-21 12:38:49,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:38:49,372 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-09-21 12:38:49,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:38:49,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:49,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:49,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:49,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:38:49,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:38:49,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-21 12:38:49,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:49,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:38:49,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:38:49,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:38:49,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:38:49,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:38:49,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1942519021] [2020-09-21 12:38:49,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:38:49,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:38:49,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800346046] [2020-09-21 12:38:49,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:38:49,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:38:49,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:38:49,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:38:49,461 INFO L87 Difference]: Start difference. First operand 959 states and 1434 transitions. Second operand 4 states. [2020-09-21 12:38:49,751 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-09-21 12:38:52,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:38:52,488 INFO L93 Difference]: Finished difference Result 2090 states and 3210 transitions. [2020-09-21 12:38:52,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:38:52,489 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 146 [2020-09-21 12:38:52,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:38:52,503 INFO L225 Difference]: With dead ends: 2090 [2020-09-21 12:38:52,504 INFO L226 Difference]: Without dead ends: 1701 [2020-09-21 12:38:52,508 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:38:52,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1701 states. [2020-09-21 12:38:52,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1701 to 1699. [2020-09-21 12:38:52,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1699 states. [2020-09-21 12:38:52,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1699 states to 1699 states and 2566 transitions. [2020-09-21 12:38:52,608 INFO L78 Accepts]: Start accepts. Automaton has 1699 states and 2566 transitions. Word has length 146 [2020-09-21 12:38:52,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:38:52,609 INFO L479 AbstractCegarLoop]: Abstraction has 1699 states and 2566 transitions. [2020-09-21 12:38:52,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:38:52,692 INFO L276 IsEmpty]: Start isEmpty. Operand 1699 states and 2566 transitions. [2020-09-21 12:38:52,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-09-21 12:38:52,695 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:38:52,696 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:38:52,696 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 12:38:52,697 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:38:52,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:38:52,698 INFO L82 PathProgramCache]: Analyzing trace with hash -1370331716, now seen corresponding path program 1 times [2020-09-21 12:38:52,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:38:52,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [902888997] [2020-09-21 12:38:52,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:38:52,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:52,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:53,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:53,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:53,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:53,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:53,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:53,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-09-21 12:38:53,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-21 12:38:53,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1005 [2020-09-21 12:38:53,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:53,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:38:53,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 12:38:53,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-21 12:38:53,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:38:54,312 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-09-21 12:38:54,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:38:54,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:54,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:54,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:54,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:38:54,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:38:54,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-21 12:38:54,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:54,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:38:54,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:38:54,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:38:54,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:38:54,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:38:54,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [902888997] [2020-09-21 12:38:54,432 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:38:54,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 12:38:54,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629438140] [2020-09-21 12:38:54,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:38:54,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:38:54,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:38:54,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:38:54,435 INFO L87 Difference]: Start difference. First operand 1699 states and 2566 transitions. Second operand 5 states. [2020-09-21 12:38:57,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:38:57,814 INFO L93 Difference]: Finished difference Result 4962 states and 7475 transitions. [2020-09-21 12:38:57,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:38:57,814 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-09-21 12:38:57,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:38:57,831 INFO L225 Difference]: With dead ends: 4962 [2020-09-21 12:38:57,832 INFO L226 Difference]: Without dead ends: 3274 [2020-09-21 12:38:57,836 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:38:57,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3274 states. [2020-09-21 12:38:57,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3274 to 3240. [2020-09-21 12:38:57,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3240 states. [2020-09-21 12:38:57,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3240 states to 3240 states and 4851 transitions. [2020-09-21 12:38:57,965 INFO L78 Accepts]: Start accepts. Automaton has 3240 states and 4851 transitions. Word has length 146 [2020-09-21 12:38:57,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:38:57,966 INFO L479 AbstractCegarLoop]: Abstraction has 3240 states and 4851 transitions. [2020-09-21 12:38:57,966 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:38:57,966 INFO L276 IsEmpty]: Start isEmpty. Operand 3240 states and 4851 transitions. [2020-09-21 12:38:57,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-09-21 12:38:57,972 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:38:57,972 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:38:57,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 12:38:57,973 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:38:57,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:38:57,973 INFO L82 PathProgramCache]: Analyzing trace with hash 1826762981, now seen corresponding path program 1 times [2020-09-21 12:38:57,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:38:57,974 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2055070658] [2020-09-21 12:38:57,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:38:58,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:58,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:58,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:58,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:58,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:58,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:58,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:58,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:59,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:59,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-09-21 12:38:59,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-21 12:38:59,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1019 [2020-09-21 12:38:59,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:59,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:38:59,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 12:38:59,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:38:59,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:38:59,422 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-09-21 12:38:59,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:38:59,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:59,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:59,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:59,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:38:59,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:38:59,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-21 12:38:59,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:59,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:38:59,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:38:59,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:38:59,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:38:59,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:38:59,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2055070658] [2020-09-21 12:38:59,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:38:59,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:38:59,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995966060] [2020-09-21 12:38:59,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:38:59,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:38:59,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:38:59,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:38:59,536 INFO L87 Difference]: Start difference. First operand 3240 states and 4851 transitions. Second operand 4 states. [2020-09-21 12:39:02,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:39:02,922 INFO L93 Difference]: Finished difference Result 9685 states and 14503 transitions. [2020-09-21 12:39:02,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 12:39:02,923 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 147 [2020-09-21 12:39:02,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:39:02,954 INFO L225 Difference]: With dead ends: 9685 [2020-09-21 12:39:02,954 INFO L226 Difference]: Without dead ends: 6468 [2020-09-21 12:39:02,963 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:39:02,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6468 states. [2020-09-21 12:39:03,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6468 to 3243. [2020-09-21 12:39:03,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3243 states. [2020-09-21 12:39:03,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3243 states to 3243 states and 4855 transitions. [2020-09-21 12:39:03,124 INFO L78 Accepts]: Start accepts. Automaton has 3243 states and 4855 transitions. Word has length 147 [2020-09-21 12:39:03,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:39:03,125 INFO L479 AbstractCegarLoop]: Abstraction has 3243 states and 4855 transitions. [2020-09-21 12:39:03,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:39:03,125 INFO L276 IsEmpty]: Start isEmpty. Operand 3243 states and 4855 transitions. [2020-09-21 12:39:03,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-21 12:39:03,130 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:39:03,131 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:39:03,131 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 12:39:03,131 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:39:03,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:39:03,132 INFO L82 PathProgramCache]: Analyzing trace with hash 921116989, now seen corresponding path program 1 times [2020-09-21 12:39:03,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:39:03,132 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [325218863] [2020-09-21 12:39:03,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:39:03,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:39:03,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:03,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:03,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:03,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:04,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:04,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:04,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:39:04,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-09-21 12:39:04,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-21 12:39:04,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1096 [2020-09-21 12:39:04,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:39:04,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:39:04,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 12:39:04,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-21 12:39:04,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:39:04,796 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-09-21 12:39:04,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:39:04,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:39:04,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:04,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:39:04,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:39:04,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:39:04,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-21 12:39:04,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:39:04,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:39:04,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:39:04,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:39:04,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:39:04,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:39:04,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [325218863] [2020-09-21 12:39:04,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:39:04,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 12:39:04,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036775262] [2020-09-21 12:39:04,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:39:04,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:39:04,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:39:04,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:39:04,902 INFO L87 Difference]: Start difference. First operand 3243 states and 4855 transitions. Second operand 5 states. [2020-09-21 12:39:08,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:39:08,502 INFO L93 Difference]: Finished difference Result 9459 states and 14123 transitions. [2020-09-21 12:39:08,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:39:08,503 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-09-21 12:39:08,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:39:08,532 INFO L225 Difference]: With dead ends: 9459 [2020-09-21 12:39:08,532 INFO L226 Difference]: Without dead ends: 6250 [2020-09-21 12:39:08,540 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:39:08,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6250 states. [2020-09-21 12:39:08,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6250 to 6194. [2020-09-21 12:39:08,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6194 states. [2020-09-21 12:39:08,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6194 states to 6194 states and 9188 transitions. [2020-09-21 12:39:08,810 INFO L78 Accepts]: Start accepts. Automaton has 6194 states and 9188 transitions. Word has length 148 [2020-09-21 12:39:08,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:39:08,811 INFO L479 AbstractCegarLoop]: Abstraction has 6194 states and 9188 transitions. [2020-09-21 12:39:08,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:39:08,811 INFO L276 IsEmpty]: Start isEmpty. Operand 6194 states and 9188 transitions. [2020-09-21 12:39:08,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-09-21 12:39:08,820 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:39:08,820 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:39:08,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 12:39:08,821 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:39:08,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:39:08,821 INFO L82 PathProgramCache]: Analyzing trace with hash 239618117, now seen corresponding path program 1 times [2020-09-21 12:39:08,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:39:08,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [164338311] [2020-09-21 12:39:08,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:39:08,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:39:08,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:09,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:09,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:09,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:09,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:39:09,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-21 12:39:09,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-21 12:39:09,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-21 12:39:09,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:39:09,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:39:09,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-21 12:39:09,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 12:39:09,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:39:10,205 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-09-21 12:39:10,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:39:10,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:39:10,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:10,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:39:10,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:39:10,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:39:10,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-21 12:39:10,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:39:10,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:39:10,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:39:10,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:39:10,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:39:10,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:39:10,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [164338311] [2020-09-21 12:39:10,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:39:10,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:39:10,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866006348] [2020-09-21 12:39:10,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:39:10,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:39:10,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:39:10,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:39:10,310 INFO L87 Difference]: Start difference. First operand 6194 states and 9188 transitions. Second operand 4 states. [2020-09-21 12:39:14,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:39:14,661 INFO L93 Difference]: Finished difference Result 18498 states and 27438 transitions. [2020-09-21 12:39:14,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 12:39:14,662 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-09-21 12:39:14,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:39:14,703 INFO L225 Difference]: With dead ends: 18498 [2020-09-21 12:39:14,703 INFO L226 Difference]: Without dead ends: 12352 [2020-09-21 12:39:14,716 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:39:14,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12352 states. [2020-09-21 12:39:15,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12352 to 6198. [2020-09-21 12:39:15,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6198 states. [2020-09-21 12:39:15,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6198 states to 6198 states and 9192 transitions. [2020-09-21 12:39:15,038 INFO L78 Accepts]: Start accepts. Automaton has 6198 states and 9192 transitions. Word has length 149 [2020-09-21 12:39:15,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:39:15,039 INFO L479 AbstractCegarLoop]: Abstraction has 6198 states and 9192 transitions. [2020-09-21 12:39:15,039 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:39:15,039 INFO L276 IsEmpty]: Start isEmpty. Operand 6198 states and 9192 transitions. [2020-09-21 12:39:15,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-09-21 12:39:15,049 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:39:15,049 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:39:15,049 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 12:39:15,049 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:39:15,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:39:15,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1772203169, now seen corresponding path program 1 times [2020-09-21 12:39:15,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:39:15,050 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [46697630] [2020-09-21 12:39:15,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:39:15,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:39:15,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:15,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:15,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:15,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:15,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:15,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:16,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:39:16,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-09-21 12:39:16,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-21 12:39:16,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1015 [2020-09-21 12:39:16,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:39:16,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:39:16,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-21 12:39:16,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-21 12:39:16,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:39:16,574 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-09-21 12:39:16,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:39:16,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:39:16,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:16,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:39:16,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:39:16,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:39:16,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-21 12:39:16,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:39:16,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:39:16,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:39:16,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:39:16,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:39:16,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:39:16,705 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [46697630] [2020-09-21 12:39:16,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:39:16,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:39:16,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124160603] [2020-09-21 12:39:16,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:39:16,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:39:16,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:39:16,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:39:16,716 INFO L87 Difference]: Start difference. First operand 6198 states and 9192 transitions. Second operand 4 states. [2020-09-21 12:39:20,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:39:20,608 INFO L93 Difference]: Finished difference Result 16504 states and 24439 transitions. [2020-09-21 12:39:20,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 12:39:20,609 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2020-09-21 12:39:20,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:39:20,634 INFO L225 Difference]: With dead ends: 16504 [2020-09-21 12:39:20,634 INFO L226 Difference]: Without dead ends: 10622 [2020-09-21 12:39:20,648 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:39:20,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10622 states. [2020-09-21 12:39:21,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10622 to 10566. [2020-09-21 12:39:21,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10566 states. [2020-09-21 12:39:21,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10566 states to 10566 states and 15471 transitions. [2020-09-21 12:39:21,147 INFO L78 Accepts]: Start accepts. Automaton has 10566 states and 15471 transitions. Word has length 150 [2020-09-21 12:39:21,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:39:21,148 INFO L479 AbstractCegarLoop]: Abstraction has 10566 states and 15471 transitions. [2020-09-21 12:39:21,148 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:39:21,148 INFO L276 IsEmpty]: Start isEmpty. Operand 10566 states and 15471 transitions. [2020-09-21 12:39:21,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-09-21 12:39:21,162 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:39:21,163 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:39:21,163 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 12:39:21,163 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:39:21,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:39:21,164 INFO L82 PathProgramCache]: Analyzing trace with hash 251552574, now seen corresponding path program 1 times [2020-09-21 12:39:21,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:39:21,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1725802230] [2020-09-21 12:39:21,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:39:21,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:39:21,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:21,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:21,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:21,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:21,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:22,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:22,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:39:22,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-09-21 12:39:22,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-21 12:39:22,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1047 [2020-09-21 12:39:22,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:39:22,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:39:22,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 12:39:22,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-21 12:39:22,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1