/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 --rcfgbuilder.size.of.a.code.block SequenceOfStatements --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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 19:59:30,685 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 19:59:30,688 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 19:59:30,729 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 19:59:30,729 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 19:59:30,737 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 19:59:30,739 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 19:59:30,742 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 19:59:30,744 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 19:59:30,747 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 19:59:30,748 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 19:59:30,749 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 19:59:30,749 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 19:59:30,751 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 19:59:30,754 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 19:59:30,755 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 19:59:30,756 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 19:59:30,757 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 19:59:30,758 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 19:59:30,766 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 19:59:30,768 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 19:59:30,769 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 19:59:30,769 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 19:59:30,770 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 19:59:30,782 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 19:59:30,782 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 19:59:30,782 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 19:59:30,783 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 19:59:30,784 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 19:59:30,784 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 19:59:30,785 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 19:59:30,785 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 19:59:30,786 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 19:59:30,786 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 19:59:30,787 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 19:59:30,787 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 19:59:30,788 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 19:59:30,788 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 19:59:30,788 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 19:59:30,789 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 19:59:30,790 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 19:59:30,790 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 [2020-10-12 19:59:30,811 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 19:59:30,811 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 19:59:30,812 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 19:59:30,813 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 19:59:30,813 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 19:59:30,813 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 19:59:30,813 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 19:59:30,813 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 19:59:30,814 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 19:59:30,814 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 19:59:30,814 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 19:59:30,814 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 19:59:30,814 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 19:59:30,815 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 19:59:30,815 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 19:59:30,815 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 19:59:30,815 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 19:59:30,815 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 19:59:30,815 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 19:59:30,816 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 19:59:30,816 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 19:59:30,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:59:30,816 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 19:59:30,817 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 19:59:30,817 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 19:59:30,817 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 19:59:30,817 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 19:59:30,817 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 19:59:30,817 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 19:59:30,818 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.rcfgbuilder: Size of a code block -> SequenceOfStatements 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=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=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=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=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=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=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=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=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=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=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=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 19:59:31,109 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 19:59:31,122 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 19:59:31,127 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 19:59:31,129 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 19:59:31,130 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 19:59:31,130 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-12 19:59:31,201 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8abb698b4/4aade3aa8e814a8ea8a244ffafd88628/FLAG66e7b5fcd [2020-10-12 19:59:31,907 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 19:59:31,908 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-12 19:59:31,930 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8abb698b4/4aade3aa8e814a8ea8a244ffafd88628/FLAG66e7b5fcd [2020-10-12 19:59:32,068 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8abb698b4/4aade3aa8e814a8ea8a244ffafd88628 [2020-10-12 19:59:32,075 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 19:59:32,077 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 19:59:32,078 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 19:59:32,078 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 19:59:32,081 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 19:59:32,082 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:59:32" (1/1) ... [2020-10-12 19:59:32,085 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b8ae939 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:59:32, skipping insertion in model container [2020-10-12 19:59:32,085 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:59:32" (1/1) ... [2020-10-12 19:59:32,093 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 19:59:32,252 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 19:59:33,346 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:59:33,361 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 19:59:33,837 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:59:33,880 INFO L208 MainTranslator]: Completed translation [2020-10-12 19:59:33,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:59:33 WrapperNode [2020-10-12 19:59:33,881 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 19:59:33,881 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 19:59:33,881 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 19:59:33,882 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 19:59:33,897 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:59:33" (1/1) ... [2020-10-12 19:59:33,899 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:59:33" (1/1) ... [2020-10-12 19:59:33,955 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:59:33" (1/1) ... [2020-10-12 19:59:33,956 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:59:33" (1/1) ... [2020-10-12 19:59:34,052 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:59:33" (1/1) ... [2020-10-12 19:59:34,127 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:59:33" (1/1) ... [2020-10-12 19:59:34,161 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:59:33" (1/1) ... [2020-10-12 19:59:34,194 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 19:59:34,195 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 19:59:34,195 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 19:59:34,195 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 19:59:34,196 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:59:33" (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 [2020-10-12 19:59:34,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 19:59:34,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 19:59:34,268 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 19:59:34,268 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 19:59:34,268 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 19:59:34,268 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 19:59:34,268 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 19:59:34,269 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-12 19:59:34,269 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 19:59:34,269 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 19:59:34,269 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 19:59:34,269 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 19:59:34,270 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 19:59:34,270 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 19:59:34,270 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 19:59:34,270 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 19:59:34,270 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-12 19:59:34,271 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 19:59:34,271 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 19:59:34,271 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 19:59:34,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 19:59:34,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 19:59:37,552 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 19:59:37,552 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 19:59:37,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:59:37 BoogieIcfgContainer [2020-10-12 19:59:37,568 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 19:59:37,571 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 19:59:37,571 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 19:59:37,574 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 19:59:37,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 07:59:32" (1/3) ... [2020-10-12 19:59:37,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58822ddb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:59:37, skipping insertion in model container [2020-10-12 19:59:37,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:59:33" (2/3) ... [2020-10-12 19:59:37,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58822ddb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:59:37, skipping insertion in model container [2020-10-12 19:59:37,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:59:37" (3/3) ... [2020-10-12 19:59:37,578 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-12 19:59:37,589 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 19:59:37,603 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-10-12 19:59:37,617 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-12 19:59:37,645 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 19:59:37,645 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 19:59:37,646 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 19:59:37,646 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 19:59:37,646 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 19:59:37,646 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 19:59:37,646 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 19:59:37,646 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 19:59:37,681 INFO L276 IsEmpty]: Start isEmpty. Operand 1107 states. [2020-10-12 19:59:37,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-12 19:59:37,708 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:59:37,709 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] [2020-10-12 19:59:37,710 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:59:37,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:59:37,717 INFO L82 PathProgramCache]: Analyzing trace with hash -1537336237, now seen corresponding path program 1 times [2020-10-12 19:59:37,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:59:37,726 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1710558641] [2020-10-12 19:59:37,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:59:38,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:59:38,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:38,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:38,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:39,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:40,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:40,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:41,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:41,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:42,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:43,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:59:43,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 19:59:43,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 19:59:43,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 19:59:43,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:59:43,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 19:59:43,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:59:43,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-12 19:59:43,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 19:59:45,125 WARN L193 SmtUtils]: Spent 1.59 s on a formula simplification that was a NOOP. DAG size: 595 [2020-10-12 19:59:45,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:59:45,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:59:45,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:45,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:59:45,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:59:45,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:59:45,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-12 19:59:45,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:59:45,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:59:45,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:59:45,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:59:45,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:59:45,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:59:45,356 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1710558641] [2020-10-12 19:59:45,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:59:45,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 19:59:45,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582220967] [2020-10-12 19:59:45,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 19:59:45,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:59:45,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 19:59:45,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-12 19:59:45,389 INFO L87 Difference]: Start difference. First operand 1107 states. Second operand 10 states. [2020-10-12 19:59:47,265 WARN L193 SmtUtils]: Spent 1.73 s on a formula simplification that was a NOOP. DAG size: 600 [2020-10-12 20:00:01,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:00:01,639 INFO L93 Difference]: Finished difference Result 3473 states and 6045 transitions. [2020-10-12 20:00:01,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-12 20:00:01,640 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 67 [2020-10-12 20:00:01,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:00:01,685 INFO L225 Difference]: With dead ends: 3473 [2020-10-12 20:00:01,685 INFO L226 Difference]: Without dead ends: 2633 [2020-10-12 20:00:01,698 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=223, Invalid=707, Unknown=0, NotChecked=0, Total=930 [2020-10-12 20:00:01,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2633 states. [2020-10-12 20:00:01,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2633 to 1347. [2020-10-12 20:00:01,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1347 states. [2020-10-12 20:00:01,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1347 states to 1347 states and 1796 transitions. [2020-10-12 20:00:01,867 INFO L78 Accepts]: Start accepts. Automaton has 1347 states and 1796 transitions. Word has length 67 [2020-10-12 20:00:01,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:00:01,867 INFO L479 AbstractCegarLoop]: Abstraction has 1347 states and 1796 transitions. [2020-10-12 20:00:01,868 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 20:00:01,868 INFO L276 IsEmpty]: Start isEmpty. Operand 1347 states and 1796 transitions. [2020-10-12 20:00:01,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-12 20:00:01,879 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:00:01,880 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] [2020-10-12 20:00:01,880 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 20:00:01,881 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:00:01,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:00:01,881 INFO L82 PathProgramCache]: Analyzing trace with hash 522357214, now seen corresponding path program 1 times [2020-10-12 20:00:01,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:00:01,882 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [567889251] [2020-10-12 20:00:01,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:00:01,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:00:02,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:02,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:02,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:02,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:03,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:03,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:04,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:04,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:04,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:05,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:06,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:00:06,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 20:00:06,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 20:00:06,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 20:00:06,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:00:06,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 20:00:06,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:00:06,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-12 20:00:06,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-12 20:00:08,892 WARN L193 SmtUtils]: Spent 1.63 s on a formula simplification that was a NOOP. DAG size: 595 [2020-10-12 20:00:08,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:00:08,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:00:08,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:08,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:00:08,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:00:08,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:00:08,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-12 20:00:08,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:00:08,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:00:08,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:00:08,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:00:08,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:00:09,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:00:09,028 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [567889251] [2020-10-12 20:00:09,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:00:09,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 20:00:09,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240502729] [2020-10-12 20:00:09,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 20:00:09,031 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:00:09,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 20:00:09,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-12 20:00:09,032 INFO L87 Difference]: Start difference. First operand 1347 states and 1796 transitions. Second operand 10 states. [2020-10-12 20:00:10,656 WARN L193 SmtUtils]: Spent 1.55 s on a formula simplification that was a NOOP. DAG size: 600 [2020-10-12 20:00:20,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:00:20,738 INFO L93 Difference]: Finished difference Result 5847 states and 8602 transitions. [2020-10-12 20:00:20,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-12 20:00:20,739 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 67 [2020-10-12 20:00:20,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:00:20,768 INFO L225 Difference]: With dead ends: 5847 [2020-10-12 20:00:20,768 INFO L226 Difference]: Without dead ends: 4817 [2020-10-12 20:00:20,773 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=223, Invalid=707, Unknown=0, NotChecked=0, Total=930 [2020-10-12 20:00:20,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4817 states. [2020-10-12 20:00:20,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4817 to 1957. [2020-10-12 20:00:20,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1957 states. [2020-10-12 20:00:20,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1957 states to 1957 states and 2736 transitions. [2020-10-12 20:00:20,915 INFO L78 Accepts]: Start accepts. Automaton has 1957 states and 2736 transitions. Word has length 67 [2020-10-12 20:00:20,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:00:20,917 INFO L479 AbstractCegarLoop]: Abstraction has 1957 states and 2736 transitions. [2020-10-12 20:00:20,917 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 20:00:20,917 INFO L276 IsEmpty]: Start isEmpty. Operand 1957 states and 2736 transitions. [2020-10-12 20:00:20,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-12 20:00:20,922 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:00:20,922 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] [2020-10-12 20:00:20,923 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 20:00:20,923 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:00:20,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:00:20,923 INFO L82 PathProgramCache]: Analyzing trace with hash -2004494165, now seen corresponding path program 1 times [2020-10-12 20:00:20,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:00:20,924 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [375047182] [2020-10-12 20:00:20,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:00:20,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:00:21,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:21,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:21,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:21,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:21,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:22,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:22,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:23,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:23,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:24,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:24,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:26,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:00:26,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 20:00:26,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 20:00:26,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-12 20:00:26,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:00:26,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 20:00:26,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-12 20:00:26,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 20:00:26,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:00:27,676 WARN L193 SmtUtils]: Spent 1.39 s on a formula simplification that was a NOOP. DAG size: 595 [2020-10-12 20:00:27,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:00:27,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:00:27,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:27,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:00:27,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:00:27,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:00:27,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-12 20:00:27,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:00:27,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:00:27,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:00:27,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:00:27,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:00:27,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:00:27,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [375047182] [2020-10-12 20:00:27,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:00:27,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 20:00:27,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953378890] [2020-10-12 20:00:27,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 20:00:27,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:00:27,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 20:00:27,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-12 20:00:27,763 INFO L87 Difference]: Start difference. First operand 1957 states and 2736 transitions. Second operand 10 states. [2020-10-12 20:00:29,392 WARN L193 SmtUtils]: Spent 1.52 s on a formula simplification that was a NOOP. DAG size: 601 [2020-10-12 20:00:38,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:00:38,757 INFO L93 Difference]: Finished difference Result 6392 states and 9610 transitions. [2020-10-12 20:00:38,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 20:00:38,757 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 67 [2020-10-12 20:00:38,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:00:38,787 INFO L225 Difference]: With dead ends: 6392 [2020-10-12 20:00:38,787 INFO L226 Difference]: Without dead ends: 5693 [2020-10-12 20:00:38,793 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=132, Invalid=420, Unknown=0, NotChecked=0, Total=552 [2020-10-12 20:00:38,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5693 states. [2020-10-12 20:00:38,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5693 to 1762. [2020-10-12 20:00:38,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1762 states. [2020-10-12 20:00:38,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1762 states to 1762 states and 2420 transitions. [2020-10-12 20:00:38,944 INFO L78 Accepts]: Start accepts. Automaton has 1762 states and 2420 transitions. Word has length 67 [2020-10-12 20:00:38,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:00:38,945 INFO L479 AbstractCegarLoop]: Abstraction has 1762 states and 2420 transitions. [2020-10-12 20:00:38,945 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 20:00:38,946 INFO L276 IsEmpty]: Start isEmpty. Operand 1762 states and 2420 transitions. [2020-10-12 20:00:38,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-12 20:00:38,949 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:00:38,949 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] [2020-10-12 20:00:38,949 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 20:00:38,949 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:00:38,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:00:38,950 INFO L82 PathProgramCache]: Analyzing trace with hash 465133034, now seen corresponding path program 1 times [2020-10-12 20:00:38,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:00:38,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1468605664] [2020-10-12 20:00:38,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:00:38,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:00:39,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:39,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:39,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:39,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:39,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:40,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:40,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:40,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:40,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:41,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:42,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:44,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:00:44,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 20:00:44,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 20:00:44,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 20:00:44,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:00:44,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 20:00:44,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-12 20:00:44,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 20:00:44,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:00:45,602 WARN L193 SmtUtils]: Spent 1.35 s on a formula simplification that was a NOOP. DAG size: 595 [2020-10-12 20:00:45,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:00:45,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:00:45,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:45,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:00:45,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:00:45,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:00:45,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 20:00:45,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:00:45,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:00:45,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:00:45,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:00:45,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:00:45,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:00:45,672 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1468605664] [2020-10-12 20:00:45,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:00:45,672 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 20:00:45,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140398948] [2020-10-12 20:00:45,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 20:00:45,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:00:45,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 20:00:45,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-12 20:00:45,674 INFO L87 Difference]: Start difference. First operand 1762 states and 2420 transitions. Second operand 10 states. [2020-10-12 20:00:47,229 WARN L193 SmtUtils]: Spent 1.43 s on a formula simplification that was a NOOP. DAG size: 610 [2020-10-12 20:00:57,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:00:57,873 INFO L93 Difference]: Finished difference Result 7200 states and 10855 transitions. [2020-10-12 20:00:57,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 20:00:57,874 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 67 [2020-10-12 20:00:57,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:00:57,902 INFO L225 Difference]: With dead ends: 7200 [2020-10-12 20:00:57,902 INFO L226 Difference]: Without dead ends: 6676 [2020-10-12 20:00:57,906 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=137, Invalid=463, Unknown=0, NotChecked=0, Total=600 [2020-10-12 20:00:57,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6676 states. [2020-10-12 20:00:58,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6676 to 1821. [2020-10-12 20:00:58,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1821 states. [2020-10-12 20:00:58,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1821 states to 1821 states and 2509 transitions. [2020-10-12 20:00:58,066 INFO L78 Accepts]: Start accepts. Automaton has 1821 states and 2509 transitions. Word has length 67 [2020-10-12 20:00:58,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:00:58,066 INFO L479 AbstractCegarLoop]: Abstraction has 1821 states and 2509 transitions. [2020-10-12 20:00:58,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 20:00:58,066 INFO L276 IsEmpty]: Start isEmpty. Operand 1821 states and 2509 transitions. [2020-10-12 20:00:58,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-12 20:00:58,070 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:00:58,070 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] [2020-10-12 20:00:58,070 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 20:00:58,071 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:00:58,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:00:58,071 INFO L82 PathProgramCache]: Analyzing trace with hash 193631573, now seen corresponding path program 1 times [2020-10-12 20:00:58,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:00:58,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [911921685] [2020-10-12 20:00:58,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:00:58,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:00:58,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:58,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:58,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:58,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:58,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:59,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:59,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:02,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:02,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:02,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:02,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:03,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:01:03,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 20:01:03,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 20:01:03,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 20:01:03,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:01:03,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:01:03,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 20:01:03,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 20:01:03,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:01:04,591 WARN L193 SmtUtils]: Spent 1.35 s on a formula simplification that was a NOOP. DAG size: 595 [2020-10-12 20:01:04,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:01:04,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:01:04,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:04,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:01:04,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:01:04,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:01:04,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 20:01:04,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:01:04,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:01:04,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:01:04,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:01:04,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:01:04,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:01:04,656 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [911921685] [2020-10-12 20:01:04,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:01:04,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 20:01:04,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047794103] [2020-10-12 20:01:04,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:01:04,657 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:01:04,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:01:04,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:01:04,658 INFO L87 Difference]: Start difference. First operand 1821 states and 2509 transitions. Second operand 9 states. [2020-10-12 20:01:06,160 WARN L193 SmtUtils]: Spent 1.40 s on a formula simplification that was a NOOP. DAG size: 596 [2020-10-12 20:01:15,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:01:15,580 INFO L93 Difference]: Finished difference Result 5703 states and 8483 transitions. [2020-10-12 20:01:15,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-12 20:01:15,581 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 67 [2020-10-12 20:01:15,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:01:15,603 INFO L225 Difference]: With dead ends: 5703 [2020-10-12 20:01:15,603 INFO L226 Difference]: Without dead ends: 5209 [2020-10-12 20:01:15,607 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2020-10-12 20:01:15,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5209 states. [2020-10-12 20:01:15,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5209 to 2123. [2020-10-12 20:01:15,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2123 states. [2020-10-12 20:01:15,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2123 states to 2123 states and 2976 transitions. [2020-10-12 20:01:15,855 INFO L78 Accepts]: Start accepts. Automaton has 2123 states and 2976 transitions. Word has length 67 [2020-10-12 20:01:15,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:01:15,857 INFO L479 AbstractCegarLoop]: Abstraction has 2123 states and 2976 transitions. [2020-10-12 20:01:15,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:01:15,857 INFO L276 IsEmpty]: Start isEmpty. Operand 2123 states and 2976 transitions. [2020-10-12 20:01:15,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-12 20:01:15,862 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:01:15,862 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] [2020-10-12 20:01:15,862 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 20:01:15,863 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:01:15,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:01:15,863 INFO L82 PathProgramCache]: Analyzing trace with hash 2087648543, now seen corresponding path program 1 times [2020-10-12 20:01:15,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:01:15,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1220113247] [2020-10-12 20:01:15,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:01:15,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:01:15,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:16,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:16,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:16,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:16,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:16,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:16,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:18,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:19,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:19,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:19,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:19,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:19,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:20,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:20,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:20,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:01:20,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 20:01:20,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 20:01:20,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-12 20:01:20,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:01:20,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 20:01:20,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:01:20,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-12 20:01:20,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:01:22,531 WARN L193 SmtUtils]: Spent 1.40 s on a formula simplification that was a NOOP. DAG size: 595 [2020-10-12 20:01:22,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:01:22,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:01:22,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:22,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:01:22,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:01:22,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:01:22,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-12 20:01:22,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:01:22,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:01:22,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:01:22,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:01:22,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:01:22,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:01:22,599 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1220113247] [2020-10-12 20:01:22,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:01:22,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 20:01:22,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324804306] [2020-10-12 20:01:22,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 20:01:22,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:01:22,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 20:01:22,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-12 20:01:22,601 INFO L87 Difference]: Start difference. First operand 2123 states and 2976 transitions. Second operand 10 states. [2020-10-12 20:01:24,096 WARN L193 SmtUtils]: Spent 1.40 s on a formula simplification that was a NOOP. DAG size: 602 [2020-10-12 20:01:35,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:01:35,061 INFO L93 Difference]: Finished difference Result 6985 states and 10439 transitions. [2020-10-12 20:01:35,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-12 20:01:35,062 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 67 [2020-10-12 20:01:35,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:01:35,073 INFO L225 Difference]: With dead ends: 6985 [2020-10-12 20:01:35,074 INFO L226 Difference]: Without dead ends: 6102 [2020-10-12 20:01:35,077 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=225, Invalid=645, Unknown=0, NotChecked=0, Total=870 [2020-10-12 20:01:35,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6102 states. [2020-10-12 20:01:35,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6102 to 2218. [2020-10-12 20:01:35,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2218 states. [2020-10-12 20:01:35,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2218 states to 2218 states and 3123 transitions. [2020-10-12 20:01:35,336 INFO L78 Accepts]: Start accepts. Automaton has 2218 states and 3123 transitions. Word has length 67 [2020-10-12 20:01:35,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:01:35,336 INFO L479 AbstractCegarLoop]: Abstraction has 2218 states and 3123 transitions. [2020-10-12 20:01:35,337 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 20:01:35,337 INFO L276 IsEmpty]: Start isEmpty. Operand 2218 states and 3123 transitions. [2020-10-12 20:01:35,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-12 20:01:35,341 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:01:35,341 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] [2020-10-12 20:01:35,341 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 20:01:35,341 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:01:35,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:01:35,342 INFO L82 PathProgramCache]: Analyzing trace with hash 683504486, now seen corresponding path program 1 times [2020-10-12 20:01:35,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:01:35,342 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [999103994] [2020-10-12 20:01:35,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:01:35,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:01:35,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:35,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:35,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:35,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:36,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:36,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:36,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:38,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:38,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:39,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:40,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:40,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:40,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:01:40,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 20:01:40,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 20:01:40,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-12 20:01:40,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:01:40,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:01:40,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 20:01:40,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-12 20:01:40,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:01:41,866 WARN L193 SmtUtils]: Spent 1.36 s on a formula simplification that was a NOOP. DAG size: 595 [2020-10-12 20:01:41,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:01:41,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:01:41,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:41,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:01:41,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:01:41,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:01:41,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 20:01:41,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:01:41,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:01:41,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:01:41,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:01:41,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:01:41,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:01:41,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [999103994] [2020-10-12 20:01:41,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:01:41,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 20:01:41,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827858938] [2020-10-12 20:01:41,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:01:41,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:01:41,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:01:41,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:01:41,920 INFO L87 Difference]: Start difference. First operand 2218 states and 3123 transitions. Second operand 9 states. [2020-10-12 20:01:51,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:01:51,475 INFO L93 Difference]: Finished difference Result 7314 states and 10951 transitions. [2020-10-12 20:01:51,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 20:01:51,476 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 68 [2020-10-12 20:01:51,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:01:51,489 INFO L225 Difference]: With dead ends: 7314 [2020-10-12 20:01:51,489 INFO L226 Difference]: Without dead ends: 6501 [2020-10-12 20:01:51,493 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2020-10-12 20:01:51,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6501 states. [2020-10-12 20:01:51,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6501 to 2296. [2020-10-12 20:01:51,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2296 states. [2020-10-12 20:01:51,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2296 states to 2296 states and 3246 transitions. [2020-10-12 20:01:51,742 INFO L78 Accepts]: Start accepts. Automaton has 2296 states and 3246 transitions. Word has length 68 [2020-10-12 20:01:51,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:01:51,742 INFO L479 AbstractCegarLoop]: Abstraction has 2296 states and 3246 transitions. [2020-10-12 20:01:51,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:01:51,743 INFO L276 IsEmpty]: Start isEmpty. Operand 2296 states and 3246 transitions. [2020-10-12 20:01:51,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-12 20:01:51,751 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:01:51,752 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] [2020-10-12 20:01:51,752 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 20:01:51,752 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:01:51,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:01:51,752 INFO L82 PathProgramCache]: Analyzing trace with hash 955005947, now seen corresponding path program 1 times [2020-10-12 20:01:51,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:01:51,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1877806979] [2020-10-12 20:01:51,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:01:51,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:01:51,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:51,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:51,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:52,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:52,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:52,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:53,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:53,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:53,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:53,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:53,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:56,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:01:56,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 20:01:56,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 20:01:56,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 20:01:56,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:01:56,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:01:56,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-12 20:01:56,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 20:01:56,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:01:58,335 WARN L193 SmtUtils]: Spent 1.35 s on a formula simplification that was a NOOP. DAG size: 595 [2020-10-12 20:01:58,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:01:58,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:01:58,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:01:58,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:01:58,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:01:58,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:01:58,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 20:01:58,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:01:58,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:01:58,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:01:58,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:01:58,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:01:58,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:01:58,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1877806979] [2020-10-12 20:01:58,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:01:58,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 20:01:58,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620161278] [2020-10-12 20:01:58,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:01:58,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:01:58,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:01:58,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:01:58,414 INFO L87 Difference]: Start difference. First operand 2296 states and 3246 transitions. Second operand 9 states. [2020-10-12 20:02:00,247 WARN L193 SmtUtils]: Spent 1.63 s on a formula simplification that was a NOOP. DAG size: 628 [2020-10-12 20:02:10,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:02:10,504 INFO L93 Difference]: Finished difference Result 6638 states and 9922 transitions. [2020-10-12 20:02:10,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 20:02:10,505 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 68 [2020-10-12 20:02:10,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:02:10,515 INFO L225 Difference]: With dead ends: 6638 [2020-10-12 20:02:10,515 INFO L226 Difference]: Without dead ends: 5747 [2020-10-12 20:02:10,519 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2020-10-12 20:02:10,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5747 states. [2020-10-12 20:02:10,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5747 to 2174. [2020-10-12 20:02:10,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2174 states. [2020-10-12 20:02:10,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2174 states to 2174 states and 3043 transitions. [2020-10-12 20:02:10,796 INFO L78 Accepts]: Start accepts. Automaton has 2174 states and 3043 transitions. Word has length 68 [2020-10-12 20:02:10,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:02:10,796 INFO L479 AbstractCegarLoop]: Abstraction has 2174 states and 3043 transitions. [2020-10-12 20:02:10,796 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:02:10,797 INFO L276 IsEmpty]: Start isEmpty. Operand 2174 states and 3043 transitions. [2020-10-12 20:02:10,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-12 20:02:10,800 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:02:10,800 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] [2020-10-12 20:02:10,800 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 20:02:10,800 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:02:10,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:02:10,801 INFO L82 PathProgramCache]: Analyzing trace with hash -1075548488, now seen corresponding path program 1 times [2020-10-12 20:02:10,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:02:10,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1196744907] [2020-10-12 20:02:10,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:02:10,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:02:10,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:10,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:11,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:11,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:11,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:11,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:11,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:13,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:13,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:13,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:14,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:14,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:15,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:02:15,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 20:02:15,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 20:02:15,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 20:02:15,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:02:15,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 20:02:15,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:02:15,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-12 20:02:15,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:02:17,568 WARN L193 SmtUtils]: Spent 1.43 s on a formula simplification that was a NOOP. DAG size: 595 [2020-10-12 20:02:17,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:02:17,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:02:17,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:17,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:02:17,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:02:17,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:02:17,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 20:02:17,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:02:17,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:02:17,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:02:17,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:02:17,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:02:17,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:02:17,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1196744907] [2020-10-12 20:02:17,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:02:17,619 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 20:02:17,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649064234] [2020-10-12 20:02:17,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 20:02:17,620 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:02:17,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 20:02:17,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-12 20:02:17,620 INFO L87 Difference]: Start difference. First operand 2174 states and 3043 transitions. Second operand 11 states. [2020-10-12 20:02:19,146 WARN L193 SmtUtils]: Spent 1.41 s on a formula simplification that was a NOOP. DAG size: 604 [2020-10-12 20:02:30,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:02:30,506 INFO L93 Difference]: Finished difference Result 5550 states and 8228 transitions. [2020-10-12 20:02:30,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 20:02:30,506 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 68 [2020-10-12 20:02:30,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:02:30,511 INFO L225 Difference]: With dead ends: 5550 [2020-10-12 20:02:30,512 INFO L226 Difference]: Without dead ends: 4903 [2020-10-12 20:02:30,513 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2020-10-12 20:02:30,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4903 states. [2020-10-12 20:02:30,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4903 to 2218. [2020-10-12 20:02:30,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2218 states. [2020-10-12 20:02:30,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2218 states to 2218 states and 3111 transitions. [2020-10-12 20:02:30,823 INFO L78 Accepts]: Start accepts. Automaton has 2218 states and 3111 transitions. Word has length 68 [2020-10-12 20:02:30,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:02:30,824 INFO L479 AbstractCegarLoop]: Abstraction has 2218 states and 3111 transitions. [2020-10-12 20:02:30,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 20:02:30,824 INFO L276 IsEmpty]: Start isEmpty. Operand 2218 states and 3111 transitions. [2020-10-12 20:02:30,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-12 20:02:30,827 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:02:30,828 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] [2020-10-12 20:02:30,828 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 20:02:30,828 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:02:30,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:02:30,828 INFO L82 PathProgramCache]: Analyzing trace with hash 546967021, now seen corresponding path program 1 times [2020-10-12 20:02:30,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:02:30,829 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [234463883] [2020-10-12 20:02:30,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:02:30,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:02:30,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:30,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:31,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:31,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:31,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:33,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:33,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:33,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:33,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:34,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:34,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:35,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:02:35,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 20:02:35,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 20:02:35,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-12 20:02:35,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:02:35,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:02:35,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-12 20:02:35,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-12 20:02:35,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:02:37,435 WARN L193 SmtUtils]: Spent 1.44 s on a formula simplification that was a NOOP. DAG size: 595 [2020-10-12 20:02:37,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:02:37,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:02:37,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:37,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:02:37,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:02:37,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:02:37,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 20:02:37,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:02:37,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:02:37,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:02:37,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:02:37,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:02:37,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:02:37,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [234463883] [2020-10-12 20:02:37,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:02:37,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 20:02:37,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986769801] [2020-10-12 20:02:37,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:02:37,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:02:37,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:02:37,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:02:37,479 INFO L87 Difference]: Start difference. First operand 2218 states and 3111 transitions. Second operand 9 states. [2020-10-12 20:02:38,965 WARN L193 SmtUtils]: Spent 1.40 s on a formula simplification that was a NOOP. DAG size: 596 [2020-10-12 20:02:49,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:02:49,897 INFO L93 Difference]: Finished difference Result 11898 states and 17960 transitions. [2020-10-12 20:02:49,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 20:02:49,898 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 68 [2020-10-12 20:02:49,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:02:49,907 INFO L225 Difference]: With dead ends: 11898 [2020-10-12 20:02:49,907 INFO L226 Difference]: Without dead ends: 10507 [2020-10-12 20:02:49,910 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=155, Invalid=495, Unknown=0, NotChecked=0, Total=650 [2020-10-12 20:02:49,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10507 states. [2020-10-12 20:02:50,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10507 to 2753. [2020-10-12 20:02:50,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2753 states. [2020-10-12 20:02:50,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2753 states to 2753 states and 3968 transitions. [2020-10-12 20:02:50,388 INFO L78 Accepts]: Start accepts. Automaton has 2753 states and 3968 transitions. Word has length 68 [2020-10-12 20:02:50,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:02:50,388 INFO L479 AbstractCegarLoop]: Abstraction has 2753 states and 3968 transitions. [2020-10-12 20:02:50,388 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:02:50,388 INFO L276 IsEmpty]: Start isEmpty. Operand 2753 states and 3968 transitions. [2020-10-12 20:02:50,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-12 20:02:50,391 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:02:50,391 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] [2020-10-12 20:02:50,392 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 20:02:50,392 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:02:50,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:02:50,392 INFO L82 PathProgramCache]: Analyzing trace with hash -1659530790, now seen corresponding path program 1 times [2020-10-12 20:02:50,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:02:50,392 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1201307803] [2020-10-12 20:02:50,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:02:50,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:02:50,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:50,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:50,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:50,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:50,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:50,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:51,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:51,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:52,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:55,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:02:55,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 20:02:55,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 20:02:55,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 20:02:55,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:02:55,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 20:02:55,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:02:55,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-12 20:02:55,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:02:57,366 WARN L193 SmtUtils]: Spent 1.43 s on a formula simplification that was a NOOP. DAG size: 595 [2020-10-12 20:02:57,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:02:57,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:02:57,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:02:57,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:02:57,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:02:57,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:02:57,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 20:02:57,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:02:57,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:02:57,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:02:57,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:02:57,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:02:57,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:02:57,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1201307803] [2020-10-12 20:02:57,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:02:57,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 20:02:57,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290828422] [2020-10-12 20:02:57,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 20:02:57,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:02:57,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 20:02:57,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-12 20:02:57,421 INFO L87 Difference]: Start difference. First operand 2753 states and 3968 transitions. Second operand 12 states. [2020-10-12 20:02:59,224 WARN L193 SmtUtils]: Spent 1.63 s on a formula simplification that was a NOOP. DAG size: 631