/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 SingleStatement --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=HIGHLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-industry-pattern/array_of_struct_ptr_flag_init.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 22:54:27,824 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 22:54:27,830 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 22:54:27,876 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 22:54:27,877 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 22:54:27,886 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 22:54:27,888 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 22:54:27,892 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 22:54:27,895 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 22:54:27,898 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 22:54:27,899 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 22:54:27,900 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 22:54:27,901 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 22:54:27,904 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 22:54:27,907 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 22:54:27,909 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 22:54:27,911 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 22:54:27,912 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 22:54:27,914 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 22:54:27,922 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 22:54:27,925 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 22:54:27,926 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 22:54:27,927 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 22:54:27,928 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 22:54:27,940 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 22:54:27,947 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 22:54:27,947 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 22:54:27,949 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 22:54:27,949 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 22:54:27,952 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 22:54:27,952 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 22:54:27,954 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 22:54:27,954 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 22:54:27,958 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 22:54:27,959 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 22:54:27,961 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 22:54:27,962 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 22:54:27,962 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 22:54:27,962 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 22:54:27,963 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 22:54:27,964 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 22:54:27,966 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 22:54:28,011 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 22:54:28,011 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 22:54:28,013 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 22:54:28,013 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 22:54:28,014 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 22:54:28,014 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 22:54:28,014 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 22:54:28,014 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 22:54:28,015 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 22:54:28,015 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 22:54:28,016 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 22:54:28,016 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 22:54:28,016 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 22:54:28,017 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 22:54:28,017 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 22:54:28,017 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 22:54:28,017 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 22:54:28,017 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 22:54:28,018 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 22:54:28,018 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 22:54:28,018 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 22:54:28,018 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 22:54:28,018 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 22:54:28,019 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 22:54:28,019 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 22:54:28,019 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 22:54:28,019 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 22:54:28,019 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 22:54:28,020 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 22:54:28,020 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 -> SingleStatement 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=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; [2020-09-24 22:54:28,708 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 22:54:28,730 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 22:54:28,735 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 22:54:28,737 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 22:54:28,738 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 22:54:28,739 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-industry-pattern/array_of_struct_ptr_flag_init.i [2020-09-24 22:54:28,818 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/537ec55ac/44a55c9fd1b048e78f999613a963c5d6/FLAG880224ba9 [2020-09-24 22:54:29,340 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 22:54:29,341 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-industry-pattern/array_of_struct_ptr_flag_init.i [2020-09-24 22:54:29,350 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/537ec55ac/44a55c9fd1b048e78f999613a963c5d6/FLAG880224ba9 [2020-09-24 22:54:29,674 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/537ec55ac/44a55c9fd1b048e78f999613a963c5d6 [2020-09-24 22:54:29,686 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 22:54:29,691 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 22:54:29,693 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 22:54:29,693 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 22:54:29,697 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 22:54:29,699 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:54:29" (1/1) ... [2020-09-24 22:54:29,704 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c934adf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:29, skipping insertion in model container [2020-09-24 22:54:29,704 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:54:29" (1/1) ... [2020-09-24 22:54:29,714 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 22:54:29,740 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 22:54:30,019 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:54:30,031 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 22:54:30,054 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:54:30,074 INFO L208 MainTranslator]: Completed translation [2020-09-24 22:54:30,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:30 WrapperNode [2020-09-24 22:54:30,074 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 22:54:30,075 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 22:54:30,075 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 22:54:30,076 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 22:54:30,170 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:30" (1/1) ... [2020-09-24 22:54:30,170 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:30" (1/1) ... [2020-09-24 22:54:30,185 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:30" (1/1) ... [2020-09-24 22:54:30,185 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:30" (1/1) ... [2020-09-24 22:54:30,193 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:30" (1/1) ... [2020-09-24 22:54:30,200 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:30" (1/1) ... [2020-09-24 22:54:30,202 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:30" (1/1) ... [2020-09-24 22:54:30,204 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 22:54:30,205 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 22:54:30,205 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 22:54:30,205 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 22:54:30,206 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:30" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 22:54:30,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 22:54:30,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 22:54:30,289 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 22:54:30,289 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-09-24 22:54:30,289 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 22:54:30,290 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 22:54:30,290 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 22:54:30,290 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 22:54:30,291 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-24 22:54:30,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 22:54:30,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 22:54:30,292 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 22:54:30,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 22:54:30,292 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 22:54:30,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 22:54:30,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 22:54:30,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 22:54:30,643 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 22:54:30,644 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-24 22:54:30,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:54:30 BoogieIcfgContainer [2020-09-24 22:54:30,649 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 22:54:30,650 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 22:54:30,651 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 22:54:30,654 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 22:54:30,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 10:54:29" (1/3) ... [2020-09-24 22:54:30,655 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aaae088 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:54:30, skipping insertion in model container [2020-09-24 22:54:30,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:30" (2/3) ... [2020-09-24 22:54:30,656 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aaae088 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:54:30, skipping insertion in model container [2020-09-24 22:54:30,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:54:30" (3/3) ... [2020-09-24 22:54:30,659 INFO L109 eAbstractionObserver]: Analyzing ICFG array_of_struct_ptr_flag_init.i [2020-09-24 22:54:30,670 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 22:54:30,681 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 22:54:30,703 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 22:54:30,731 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 22:54:30,732 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 22:54:30,732 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 22:54:30,732 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 22:54:30,732 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 22:54:30,732 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 22:54:30,732 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 22:54:30,732 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 22:54:30,755 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2020-09-24 22:54:30,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-24 22:54:30,764 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:54:30,765 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] [2020-09-24 22:54:30,765 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:54:30,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:54:30,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1392671971, now seen corresponding path program 1 times [2020-09-24 22:54:30,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:54:30,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [188653127] [2020-09-24 22:54:30,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:54:30,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:54:30,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:31,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:31,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:54:31,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-24 22:54:31,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:54:31,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 286 [2020-09-24 22:54:31,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:54:31,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:54:31,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-24 22:54:31,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-24 22:54:31,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 22:54:31,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:54:31,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:54:31,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:31,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:54:31,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:54:31,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:54:31,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 22:54:31,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:54:31,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:54:31,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:54:31,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:54:31,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:54:31,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:54:31,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:54:31,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:31,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:31,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:54:31,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 22:54:31,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:54:31,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 22:54:31,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:54:31,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:54:31,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 22:54:31,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:54:31,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:54:31,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:54:31,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [188653127] [2020-09-24 22:54:31,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:54:31,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 22:54:31,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59086743] [2020-09-24 22:54:31,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 22:54:31,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:54:31,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 22:54:31,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 22:54:31,438 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 5 states. [2020-09-24 22:54:31,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:54:31,742 INFO L93 Difference]: Finished difference Result 109 states and 134 transitions. [2020-09-24 22:54:31,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 22:54:31,745 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2020-09-24 22:54:31,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:54:31,766 INFO L225 Difference]: With dead ends: 109 [2020-09-24 22:54:31,766 INFO L226 Difference]: Without dead ends: 68 [2020-09-24 22:54:31,772 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 22:54:31,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-24 22:54:31,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 50. [2020-09-24 22:54:31,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-24 22:54:31,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2020-09-24 22:54:31,870 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 29 [2020-09-24 22:54:31,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:54:31,871 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2020-09-24 22:54:31,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 22:54:31,871 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2020-09-24 22:54:31,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-24 22:54:31,873 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:54:31,873 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] [2020-09-24 22:54:31,874 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 22:54:31,874 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:54:31,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:54:31,875 INFO L82 PathProgramCache]: Analyzing trace with hash 215899159, now seen corresponding path program 1 times [2020-09-24 22:54:31,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:54:31,876 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [730824603] [2020-09-24 22:54:31,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:54:31,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:54:31,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:31,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:32,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:33,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:54:33,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 22:54:33,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:54:33,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1751 [2020-09-24 22:54:33,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:54:33,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:54:33,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-24 22:54:33,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:54:33,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:54:33,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:54:33,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:54:33,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:33,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:54:33,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:54:33,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:54:33,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:54:33,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:54:33,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:54:33,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:54:33,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:54:33,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:54:33,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:54:33,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:54:33,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:33,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:33,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:54:33,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 22:54:33,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:54:33,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-24 22:54:33,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:54:33,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:54:33,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 22:54:33,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:54:33,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:54:33,842 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:54:33,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [730824603] [2020-09-24 22:54:33,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:54:33,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 22:54:33,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540444802] [2020-09-24 22:54:33,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 22:54:33,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:54:33,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 22:54:33,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-24 22:54:33,850 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 10 states. [2020-09-24 22:54:34,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:54:34,297 INFO L93 Difference]: Finished difference Result 106 states and 119 transitions. [2020-09-24 22:54:34,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 22:54:34,297 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 36 [2020-09-24 22:54:34,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:54:34,299 INFO L225 Difference]: With dead ends: 106 [2020-09-24 22:54:34,299 INFO L226 Difference]: Without dead ends: 78 [2020-09-24 22:54:34,304 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2020-09-24 22:54:34,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-09-24 22:54:34,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 60. [2020-09-24 22:54:34,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-24 22:54:34,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 65 transitions. [2020-09-24 22:54:34,325 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 65 transitions. Word has length 36 [2020-09-24 22:54:34,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:54:34,325 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 65 transitions. [2020-09-24 22:54:34,325 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 22:54:34,326 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 65 transitions. [2020-09-24 22:54:34,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-24 22:54:34,331 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:54:34,331 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:54:34,332 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 22:54:34,332 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:54:34,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:54:34,332 INFO L82 PathProgramCache]: Analyzing trace with hash 589608213, now seen corresponding path program 1 times [2020-09-24 22:54:34,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:54:34,333 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [198049083] [2020-09-24 22:54:34,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:54:34,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:54:34,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:34,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:34,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:36,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:37,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:39,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:39,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:54:39,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-24 22:54:39,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 22:54:39,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-09-24 22:54:39,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:54:39,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:54:39,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-09-24 22:54:39,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 22:54:39,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:54:39,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:54:39,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:54:39,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:39,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:54:39,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:54:39,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:54:39,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 22:54:39,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:54:39,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:54:39,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:54:39,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:54:39,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:54:39,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:54:39,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:54:39,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:39,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:39,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:54:39,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-24 22:54:39,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:54:39,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-24 22:54:39,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:54:39,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:54:39,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 22:54:39,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 22:54:39,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:54:39,702 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:54:39,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [198049083] [2020-09-24 22:54:39,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:54:39,703 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 22:54:39,703 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090765118] [2020-09-24 22:54:39,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 22:54:39,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:54:39,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 22:54:39,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-09-24 22:54:39,707 INFO L87 Difference]: Start difference. First operand 60 states and 65 transitions. Second operand 14 states. [2020-09-24 22:54:40,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:54:40,291 INFO L93 Difference]: Finished difference Result 130 states and 145 transitions. [2020-09-24 22:54:40,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 22:54:40,295 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 49 [2020-09-24 22:54:40,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:54:40,298 INFO L225 Difference]: With dead ends: 130 [2020-09-24 22:54:40,302 INFO L226 Difference]: Without dead ends: 93 [2020-09-24 22:54:40,304 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=110, Invalid=540, Unknown=0, NotChecked=0, Total=650 [2020-09-24 22:54:40,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-09-24 22:54:40,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 75. [2020-09-24 22:54:40,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-09-24 22:54:40,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 81 transitions. [2020-09-24 22:54:40,325 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 81 transitions. Word has length 49 [2020-09-24 22:54:40,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:54:40,326 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 81 transitions. [2020-09-24 22:54:40,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 22:54:40,326 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 81 transitions. [2020-09-24 22:54:40,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-24 22:54:40,329 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:54:40,329 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:54:40,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 22:54:40,335 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:54:40,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:54:40,335 INFO L82 PathProgramCache]: Analyzing trace with hash -138713633, now seen corresponding path program 2 times [2020-09-24 22:54:40,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:54:40,337 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [42401491] [2020-09-24 22:54:40,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:54:40,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:54:40,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:40,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:40,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:40,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:40,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:45,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:54:45,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-24 22:54:45,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 22:54:45,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-24 22:54:45,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:54:45,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:54:45,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-24 22:54:45,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 22:54:45,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:54:45,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:54:45,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:54:45,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:45,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:54:45,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:54:45,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:54:45,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:54:45,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:54:45,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:54:45,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:54:45,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:54:45,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:54:45,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:54:45,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:54:45,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:45,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:45,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:54:45,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 22:54:45,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:54:45,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-09-24 22:54:45,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:54:45,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:54:45,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 22:54:45,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 22:54:45,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:54:45,773 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:54:45,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [42401491] [2020-09-24 22:54:45,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:54:45,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-24 22:54:45,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733278243] [2020-09-24 22:54:45,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-24 22:54:45,776 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:54:45,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-24 22:54:45,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2020-09-24 22:54:45,777 INFO L87 Difference]: Start difference. First operand 75 states and 81 transitions. Second operand 18 states. [2020-09-24 22:54:46,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:54:46,705 INFO L93 Difference]: Finished difference Result 154 states and 171 transitions. [2020-09-24 22:54:46,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-24 22:54:46,706 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 62 [2020-09-24 22:54:46,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:54:46,708 INFO L225 Difference]: With dead ends: 154 [2020-09-24 22:54:46,708 INFO L226 Difference]: Without dead ends: 108 [2020-09-24 22:54:46,712 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=187, Invalid=1003, Unknown=0, NotChecked=0, Total=1190 [2020-09-24 22:54:46,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-09-24 22:54:46,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 90. [2020-09-24 22:54:46,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-09-24 22:54:46,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 97 transitions. [2020-09-24 22:54:46,731 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 97 transitions. Word has length 62 [2020-09-24 22:54:46,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:54:46,731 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 97 transitions. [2020-09-24 22:54:46,731 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-24 22:54:46,733 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 97 transitions. [2020-09-24 22:54:46,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-09-24 22:54:46,736 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:54:46,737 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:54:46,737 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 22:54:46,737 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:54:46,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:54:46,738 INFO L82 PathProgramCache]: Analyzing trace with hash -330918067, now seen corresponding path program 3 times [2020-09-24 22:54:46,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:54:46,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1726063522] [2020-09-24 22:54:46,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:54:46,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:54:46,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:46,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:46,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:47,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:47,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:47,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:47,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:48,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:48,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:48,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:51,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:54:51,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-24 22:54:51,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 22:54:51,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-24 22:54:51,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:54:51,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 22:54:51,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-24 22:54:51,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 22:54:51,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:54:51,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:54:51,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:54:51,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:51,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:54:51,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:54:51,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:54:51,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 22:54:51,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:54:51,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:54:51,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:54:51,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:54:51,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 22:54:51,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:54:51,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:54:51,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:51,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:52,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:54:52,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 22:54:52,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:54:52,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-09-24 22:54:52,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:54:52,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 22:54:52,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 22:54:52,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 22:54:52,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 22:54:52,562 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:54:52,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1726063522] [2020-09-24 22:54:52,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:54:52,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-09-24 22:54:52,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416824424] [2020-09-24 22:54:52,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-09-24 22:54:52,565 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:54:52,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-09-24 22:54:52,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2020-09-24 22:54:52,566 INFO L87 Difference]: Start difference. First operand 90 states and 97 transitions. Second operand 22 states. [2020-09-24 22:54:53,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:54:53,414 INFO L93 Difference]: Finished difference Result 178 states and 197 transitions. [2020-09-24 22:54:53,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-09-24 22:54:53,416 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 75 [2020-09-24 22:54:53,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:54:53,417 INFO L225 Difference]: With dead ends: 178 [2020-09-24 22:54:53,417 INFO L226 Difference]: Without dead ends: 123 [2020-09-24 22:54:53,419 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=259, Invalid=1301, Unknown=0, NotChecked=0, Total=1560 [2020-09-24 22:54:53,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-09-24 22:54:53,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 105. [2020-09-24 22:54:53,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-09-24 22:54:53,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 113 transitions. [2020-09-24 22:54:53,435 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 113 transitions. Word has length 75 [2020-09-24 22:54:53,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:54:53,436 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 113 transitions. [2020-09-24 22:54:53,436 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-09-24 22:54:53,436 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 113 transitions. [2020-09-24 22:54:53,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-09-24 22:54:53,440 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:54:53,440 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:54:53,440 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 22:54:53,441 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:54:53,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:54:53,441 INFO L82 PathProgramCache]: Analyzing trace with hash 1356609447, now seen corresponding path program 4 times [2020-09-24 22:54:53,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:54:53,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1295018551] [2020-09-24 22:54:53,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:54:53,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:54:53,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:53,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:53,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:53,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:54,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:54,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:55,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:55,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:57,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:58,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:54:58,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-09-24 22:54:58,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 22:54:58,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 22:54:58,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:54:58,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 22:54:58,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-24 22:54:58,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-24 22:54:58,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:54:58,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:54:58,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:54:58,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:58,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:54:58,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:54:58,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:54:58,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:54:58,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:54:58,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:54:58,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:54:58,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:54:58,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:54:58,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:54:58,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:54:58,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:58,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:58,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:54:58,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 22:54:58,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:54:58,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 270 [2020-09-24 22:54:58,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:54:58,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 22:54:58,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 22:54:58,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-24 22:54:58,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:54:59,131 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:54:59,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1295018551] [2020-09-24 22:54:59,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:54:59,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-09-24 22:54:59,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092536199] [2020-09-24 22:54:59,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-09-24 22:54:59,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:54:59,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-09-24 22:54:59,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=560, Unknown=0, NotChecked=0, Total=650 [2020-09-24 22:54:59,134 INFO L87 Difference]: Start difference. First operand 105 states and 113 transitions. Second operand 26 states. [2020-09-24 22:55:00,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:55:00,505 INFO L93 Difference]: Finished difference Result 202 states and 223 transitions. [2020-09-24 22:55:00,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-09-24 22:55:00,506 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 88 [2020-09-24 22:55:00,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:55:00,509 INFO L225 Difference]: With dead ends: 202 [2020-09-24 22:55:00,509 INFO L226 Difference]: Without dead ends: 138 [2020-09-24 22:55:00,512 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 509 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=413, Invalid=2343, Unknown=0, NotChecked=0, Total=2756 [2020-09-24 22:55:00,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-09-24 22:55:00,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 120. [2020-09-24 22:55:00,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-09-24 22:55:00,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 129 transitions. [2020-09-24 22:55:00,522 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 129 transitions. Word has length 88 [2020-09-24 22:55:00,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:55:00,522 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 129 transitions. [2020-09-24 22:55:00,523 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-09-24 22:55:00,523 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 129 transitions. [2020-09-24 22:55:00,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-09-24 22:55:00,524 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:55:00,524 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:55:00,525 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 22:55:00,525 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:55:00,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:55:00,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1436643717, now seen corresponding path program 5 times [2020-09-24 22:55:00,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:55:00,526 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1702431801] [2020-09-24 22:55:00,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:55:00,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:00,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:00,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:00,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:01,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:01,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:01,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:02,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:03,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:03,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:04,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:05,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:05,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:05,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-24 22:55:05,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 22:55:05,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-24 22:55:05,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:05,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 22:55:05,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 22:55:05,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-24 22:55:05,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:55:05,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:55:05,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:05,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:05,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:05,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:55:05,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:55:05,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:55:05,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:05,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:55:05,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:55:05,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:55:05,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:55:05,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:55:05,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:05,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:05,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:05,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-24 22:55:05,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:55:05,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 348 [2020-09-24 22:55:05,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:05,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 22:55:05,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 22:55:05,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 22:55:05,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:55:06,189 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-09-24 22:55:06,189 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1702431801] [2020-09-24 22:55:06,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:55:06,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-24 22:55:06,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623812407] [2020-09-24 22:55:06,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-24 22:55:06,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:55:06,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-24 22:55:06,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2020-09-24 22:55:06,192 INFO L87 Difference]: Start difference. First operand 120 states and 129 transitions. Second operand 17 states. [2020-09-24 22:55:06,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:55:06,892 INFO L93 Difference]: Finished difference Result 203 states and 221 transitions. [2020-09-24 22:55:06,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-24 22:55:06,892 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 101 [2020-09-24 22:55:06,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:55:06,894 INFO L225 Difference]: With dead ends: 203 [2020-09-24 22:55:06,894 INFO L226 Difference]: Without dead ends: 130 [2020-09-24 22:55:06,895 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=320, Invalid=1012, Unknown=0, NotChecked=0, Total=1332 [2020-09-24 22:55:06,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-09-24 22:55:06,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 126. [2020-09-24 22:55:06,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-09-24 22:55:06,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 135 transitions. [2020-09-24 22:55:06,904 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 135 transitions. Word has length 101 [2020-09-24 22:55:06,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:55:06,904 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 135 transitions. [2020-09-24 22:55:06,904 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-24 22:55:06,905 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 135 transitions. [2020-09-24 22:55:06,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-09-24 22:55:06,906 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:55:06,906 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:55:06,907 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 22:55:06,909 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:55:06,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:55:06,909 INFO L82 PathProgramCache]: Analyzing trace with hash 777918849, now seen corresponding path program 6 times [2020-09-24 22:55:06,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:55:06,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [651571778] [2020-09-24 22:55:06,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:55:06,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:06,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:07,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:07,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:07,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:08,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:08,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:09,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:10,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:11,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:11,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-24 22:55:11,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 22:55:11,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-24 22:55:11,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:11,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 22:55:11,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 22:55:11,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-24 22:55:11,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:55:11,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:55:11,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:11,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:12,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:12,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:55:12,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:55:12,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:55:12,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:12,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:55:12,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:55:12,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:55:12,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:55:12,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:55:12,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:12,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:12,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:12,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-24 22:55:12,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:55:12,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 408 [2020-09-24 22:55:12,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:12,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 22:55:12,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 22:55:12,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-24 22:55:12,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:55:12,774 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-09-24 22:55:12,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [651571778] [2020-09-24 22:55:12,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:55:12,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-24 22:55:12,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278971518] [2020-09-24 22:55:12,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-24 22:55:12,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:55:12,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-24 22:55:12,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2020-09-24 22:55:12,779 INFO L87 Difference]: Start difference. First operand 126 states and 135 transitions. Second operand 19 states. [2020-09-24 22:55:13,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:55:13,633 INFO L93 Difference]: Finished difference Result 209 states and 227 transitions. [2020-09-24 22:55:13,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-24 22:55:13,635 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 107 [2020-09-24 22:55:13,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:55:13,636 INFO L225 Difference]: With dead ends: 209 [2020-09-24 22:55:13,636 INFO L226 Difference]: Without dead ends: 136 [2020-09-24 22:55:13,638 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=418, Invalid=1304, Unknown=0, NotChecked=0, Total=1722 [2020-09-24 22:55:13,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-09-24 22:55:13,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 132. [2020-09-24 22:55:13,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-09-24 22:55:13,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 141 transitions. [2020-09-24 22:55:13,651 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 141 transitions. Word has length 107 [2020-09-24 22:55:13,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:55:13,651 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 141 transitions. [2020-09-24 22:55:13,651 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-24 22:55:13,651 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 141 transitions. [2020-09-24 22:55:13,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-09-24 22:55:13,655 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:55:13,655 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:55:13,656 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 22:55:13,656 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:55:13,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:55:13,656 INFO L82 PathProgramCache]: Analyzing trace with hash -849095555, now seen corresponding path program 7 times [2020-09-24 22:55:13,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:55:13,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1641445368] [2020-09-24 22:55:13,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:55:13,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:13,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:13,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:14,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking...