/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label31.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:36:51,839 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:36:51,844 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:36:51,885 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:36:51,886 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:36:51,893 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:36:51,896 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:36:51,899 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:36:51,902 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:36:51,905 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:36:51,906 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:36:51,907 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:36:51,907 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:36:51,910 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:36:51,913 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:36:51,914 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:36:51,916 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:36:51,917 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:36:51,919 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:36:51,927 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:36:51,930 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:36:51,933 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:36:51,934 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:36:51,935 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:36:51,947 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:36:51,948 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:36:51,948 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:36:51,956 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:36:51,957 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:36:51,958 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:36:51,958 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:36:51,962 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:36:51,963 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:36:51,964 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:36:51,965 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:36:51,966 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:36:51,967 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:36:51,967 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:36:51,967 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:36:51,968 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:36:51,969 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:36:51,970 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 [2020-09-25 14:36:52,016 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:36:52,017 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:36:52,019 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:36:52,019 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:36:52,019 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:36:52,020 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:36:52,020 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:36:52,020 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:36:52,021 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:36:52,021 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:36:52,022 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:36:52,022 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:36:52,022 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:36:52,023 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:36:52,023 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:36:52,023 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:36:52,023 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:36:52,024 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:36:52,024 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:36:52,024 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:36:52,024 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:36:52,024 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:36:52,025 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:36:52,025 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:36:52,025 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:36:52,025 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:36:52,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:36:52,025 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:36:52,026 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:36:52,026 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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-09-25 14:36:52,476 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:36:52,500 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:36:52,508 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:36:52,510 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:36:52,510 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:36:52,511 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label31.c [2020-09-25 14:36:52,609 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9ea22c8a7/cebc24c94c294e05b38417a06ccbba5e/FLAG2470b96a2 [2020-09-25 14:36:53,258 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:36:53,259 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label31.c [2020-09-25 14:36:53,283 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9ea22c8a7/cebc24c94c294e05b38417a06ccbba5e/FLAG2470b96a2 [2020-09-25 14:36:53,506 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9ea22c8a7/cebc24c94c294e05b38417a06ccbba5e [2020-09-25 14:36:53,519 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:36:53,527 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:36:53,531 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:36:53,531 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:36:53,535 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:36:53,536 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:36:53" (1/1) ... [2020-09-25 14:36:53,540 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@245d8fce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:53, skipping insertion in model container [2020-09-25 14:36:53,540 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:36:53" (1/1) ... [2020-09-25 14:36:53,551 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:36:53,625 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:36:54,210 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:36:54,218 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:36:54,440 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:36:54,460 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:36:54,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:54 WrapperNode [2020-09-25 14:36:54,461 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:36:54,461 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:36:54,462 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:36:54,462 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:36:54,476 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:54" (1/1) ... [2020-09-25 14:36:54,477 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:54" (1/1) ... [2020-09-25 14:36:54,501 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:54" (1/1) ... [2020-09-25 14:36:54,502 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:54" (1/1) ... [2020-09-25 14:36:54,542 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:54" (1/1) ... [2020-09-25 14:36:54,559 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:54" (1/1) ... [2020-09-25 14:36:54,564 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:54" (1/1) ... [2020-09-25 14:36:54,574 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:36:54,575 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:36:54,577 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:36:54,577 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:36:54,579 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:54" (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 [2020-09-25 14:36:54,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:36:54,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:36:54,654 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 14:36:54,654 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:36:54,655 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 14:36:54,655 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:36:54,655 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:36:54,655 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:36:54,655 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:36:54,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:36:54,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:36:55,998 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:36:55,999 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:36:56,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:36:56 BoogieIcfgContainer [2020-09-25 14:36:56,014 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:36:56,017 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:36:56,017 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:36:56,021 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:36:56,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:36:53" (1/3) ... [2020-09-25 14:36:56,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68751017 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:36:56, skipping insertion in model container [2020-09-25 14:36:56,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:54" (2/3) ... [2020-09-25 14:36:56,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68751017 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:36:56, skipping insertion in model container [2020-09-25 14:36:56,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:36:56" (3/3) ... [2020-09-25 14:36:56,027 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label31.c [2020-09-25 14:36:56,040 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:36:56,054 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:36:56,075 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:36:56,110 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:36:56,111 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:36:56,111 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:36:56,111 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:36:56,111 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:36:56,111 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:36:56,111 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:36:56,112 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:36:56,144 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 14:36:56,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-09-25 14:36:56,170 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:36:56,171 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:36:56,172 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:36:56,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:36:56,179 INFO L82 PathProgramCache]: Analyzing trace with hash -21747025, now seen corresponding path program 1 times [2020-09-25 14:36:56,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:36:56,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [866462069] [2020-09-25 14:36:56,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:36:56,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:56,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:56,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:57,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:57,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:58,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:59,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:59,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:01,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:01,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-09-25 14:37:01,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:37:01,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 14:37:01,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:01,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:01,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:37:01,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 14:37:01,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-25 14:37:01,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 14:37:01,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:37:01,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:01,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:01,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:01,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:37:01,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:01,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 14:37:01,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:01,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:01,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:37:01,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:01,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 14:37:01,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:01,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:37:01,789 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [866462069] [2020-09-25 14:37:01,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:37:01,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:37:01,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998134043] [2020-09-25 14:37:01,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:37:01,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:37:01,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:37:01,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:37:01,823 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 14:37:03,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:37:03,978 INFO L93 Difference]: Finished difference Result 1231 states and 1630 transitions. [2020-09-25 14:37:03,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:37:03,981 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2020-09-25 14:37:03,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:37:04,027 INFO L225 Difference]: With dead ends: 1231 [2020-09-25 14:37:04,028 INFO L226 Difference]: Without dead ends: 657 [2020-09-25 14:37:04,038 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:37:04,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2020-09-25 14:37:04,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 603. [2020-09-25 14:37:04,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 14:37:04,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 707 transitions. [2020-09-25 14:37:04,149 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 707 transitions. Word has length 120 [2020-09-25 14:37:04,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:37:04,157 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 707 transitions. [2020-09-25 14:37:04,157 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:37:04,157 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 707 transitions. [2020-09-25 14:37:04,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-09-25 14:37:04,170 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:37:04,170 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:37:04,171 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:37:04,171 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:37:04,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:37:04,173 INFO L82 PathProgramCache]: Analyzing trace with hash 2128216958, now seen corresponding path program 1 times [2020-09-25 14:37:04,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:37:04,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1007912380] [2020-09-25 14:37:04,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:37:04,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:04,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:04,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:04,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:04,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:06,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:06,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-09-25 14:37:06,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:37:06,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2260 [2020-09-25 14:37:06,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:06,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:06,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:37:06,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 14:37:06,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-25 14:37:06,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:06,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:37:06,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:06,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:06,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:06,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:37:06,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:06,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 14:37:06,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:06,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:06,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:37:06,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:06,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:37:06,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:37:06,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:37:06,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:06,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:06,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:06,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 14:37:06,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:06,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 14:37:06,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:06,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:06,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:37:06,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:06,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:37:06,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:06,775 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:37:06,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1007912380] [2020-09-25 14:37:06,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:37:06,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:37:06,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875850814] [2020-09-25 14:37:06,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:37:06,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:37:06,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:37:06,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:37:06,782 INFO L87 Difference]: Start difference. First operand 603 states and 707 transitions. Second operand 5 states. [2020-09-25 14:37:08,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:37:08,994 INFO L93 Difference]: Finished difference Result 1503 states and 1831 transitions. [2020-09-25 14:37:08,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:37:08,995 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2020-09-25 14:37:08,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:37:09,002 INFO L225 Difference]: With dead ends: 1503 [2020-09-25 14:37:09,002 INFO L226 Difference]: Without dead ends: 924 [2020-09-25 14:37:09,006 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:37:09,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2020-09-25 14:37:09,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 891. [2020-09-25 14:37:09,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 891 states. [2020-09-25 14:37:09,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1040 transitions. [2020-09-25 14:37:09,085 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1040 transitions. Word has length 141 [2020-09-25 14:37:09,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:37:09,086 INFO L479 AbstractCegarLoop]: Abstraction has 891 states and 1040 transitions. [2020-09-25 14:37:09,086 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:37:09,086 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1040 transitions. [2020-09-25 14:37:09,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-25 14:37:09,090 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:37:09,091 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:37:09,091 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:37:09,091 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:37:09,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:37:09,092 INFO L82 PathProgramCache]: Analyzing trace with hash 1222044605, now seen corresponding path program 1 times [2020-09-25 14:37:09,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:37:09,093 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [631029623] [2020-09-25 14:37:09,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:37:09,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:09,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:09,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:09,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:10,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:11,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:14,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:14,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-09-25 14:37:14,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 14:37:14,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 14:37:14,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:14,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:14,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 14:37:14,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 14:37:14,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-09-25 14:37:14,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:14,852 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 40 [2020-09-25 14:37:15,017 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 39 [2020-09-25 14:37:15,188 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 37 [2020-09-25 14:37:15,364 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 35 [2020-09-25 14:37:15,526 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 33 [2020-09-25 14:37:15,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:37:15,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:15,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:15,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:15,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:37:15,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:15,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 14:37:15,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:15,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:15,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:37:15,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:15,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 14:37:15,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:15,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:37:15,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:15,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:15,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:15,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:15,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:37:15,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:37:15,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-09-25 14:37:15,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:15,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:15,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:37:15,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:15,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 14:37:15,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:37:16,350 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:37:16,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [631029623] [2020-09-25 14:37:16,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:37:16,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-09-25 14:37:16,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364504907] [2020-09-25 14:37:16,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-25 14:37:16,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:37:16,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-25 14:37:16,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2020-09-25 14:37:16,354 INFO L87 Difference]: Start difference. First operand 891 states and 1040 transitions. Second operand 20 states. [2020-09-25 14:37:17,110 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-09-25 14:37:17,280 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-09-25 14:37:17,725 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 90 [2020-09-25 14:37:18,247 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 89 [2020-09-25 14:37:18,651 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 88 [2020-09-25 14:37:18,839 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 39 [2020-09-25 14:37:19,625 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 83 [2020-09-25 14:37:19,952 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2020-09-25 14:37:20,423 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 87 [2020-09-25 14:37:20,592 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 38 [2020-09-25 14:37:21,707 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2020-09-25 14:37:22,136 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 82 [2020-09-25 14:37:22,462 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 81 [2020-09-25 14:37:22,743 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 85 [2020-09-25 14:37:23,663 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2020-09-25 14:37:23,995 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 79 [2020-09-25 14:37:24,297 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 35 [2020-09-25 14:37:24,856 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-09-25 14:37:25,131 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 77 [2020-09-25 14:37:25,832 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 75 [2020-09-25 14:37:26,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:37:26,719 INFO L93 Difference]: Finished difference Result 2685 states and 3390 transitions. [2020-09-25 14:37:26,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-09-25 14:37:26,727 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 142 [2020-09-25 14:37:26,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:37:26,746 INFO L225 Difference]: With dead ends: 2685 [2020-09-25 14:37:26,747 INFO L226 Difference]: Without dead ends: 1818 [2020-09-25 14:37:26,754 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 738 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=872, Invalid=2208, Unknown=0, NotChecked=0, Total=3080 [2020-09-25 14:37:26,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1818 states. [2020-09-25 14:37:26,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1818 to 1709. [2020-09-25 14:37:26,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1709 states. [2020-09-25 14:37:26,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1709 states to 1709 states and 2006 transitions. [2020-09-25 14:37:26,833 INFO L78 Accepts]: Start accepts. Automaton has 1709 states and 2006 transitions. Word has length 142 [2020-09-25 14:37:26,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:37:26,834 INFO L479 AbstractCegarLoop]: Abstraction has 1709 states and 2006 transitions. [2020-09-25 14:37:26,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-25 14:37:26,835 INFO L276 IsEmpty]: Start isEmpty. Operand 1709 states and 2006 transitions. [2020-09-25 14:37:26,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-09-25 14:37:26,842 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:37:26,842 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:37:26,842 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:37:26,843 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:37:26,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:37:26,843 INFO L82 PathProgramCache]: Analyzing trace with hash -112420166, now seen corresponding path program 1 times [2020-09-25 14:37:26,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:37:26,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1050669563] [2020-09-25 14:37:26,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:37:26,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:26,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:27,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:27,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:28,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:28,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:29,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:30,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:31,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:31,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:31,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:31,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:31,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-09-25 14:37:31,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 14:37:31,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 14:37:31,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:31,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:31,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:37:31,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-09-25 14:37:31,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-25 14:37:31,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:32,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:37:32,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:32,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:32,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:32,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:37:32,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:32,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 14:37:32,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:32,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:32,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:37:32,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:32,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:37:32,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:32,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:37:32,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:32,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:32,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:32,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:37:32,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:32,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 14:37:32,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:32,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:32,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:37:32,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:32,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 14:37:32,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:32,170 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:37:32,170 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1050669563] [2020-09-25 14:37:32,171 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:37:32,171 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:37:32,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717419712] [2020-09-25 14:37:32,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:37:32,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:37:32,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:37:32,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:37:32,174 INFO L87 Difference]: Start difference. First operand 1709 states and 2006 transitions. Second operand 5 states. [2020-09-25 14:37:34,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:37:34,768 INFO L93 Difference]: Finished difference Result 4389 states and 5305 transitions. [2020-09-25 14:37:34,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:37:34,769 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-09-25 14:37:34,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:37:34,788 INFO L225 Difference]: With dead ends: 4389 [2020-09-25 14:37:34,789 INFO L226 Difference]: Without dead ends: 2704 [2020-09-25 14:37:34,795 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:37:34,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2704 states. [2020-09-25 14:37:34,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2704 to 2440. [2020-09-25 14:37:34,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2440 states. [2020-09-25 14:37:34,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2440 states to 2440 states and 2932 transitions. [2020-09-25 14:37:34,897 INFO L78 Accepts]: Start accepts. Automaton has 2440 states and 2932 transitions. Word has length 149 [2020-09-25 14:37:34,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:37:34,897 INFO L479 AbstractCegarLoop]: Abstraction has 2440 states and 2932 transitions. [2020-09-25 14:37:34,897 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:37:34,898 INFO L276 IsEmpty]: Start isEmpty. Operand 2440 states and 2932 transitions. [2020-09-25 14:37:34,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-09-25 14:37:34,908 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:37:34,908 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:37:34,909 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:37:34,911 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:37:34,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:37:34,912 INFO L82 PathProgramCache]: Analyzing trace with hash 425868186, now seen corresponding path program 1 times [2020-09-25 14:37:34,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:37:34,912 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [293550520] [2020-09-25 14:37:34,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:37:34,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:34,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:35,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:35,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:35,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:35,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:39,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:39,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-09-25 14:37:39,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 14:37:39,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 14:37:39,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:39,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:39,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:37:39,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-09-25 14:37:39,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-25 14:37:39,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:37:40,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:37:40,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:40,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:40,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:40,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:37:40,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:40,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 14:37:40,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:40,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:40,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:37:40,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:40,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:37:40,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:40,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:37:40,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:40,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:40,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:40,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 14:37:40,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:40,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 14:37:40,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:40,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:40,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:37:40,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:40,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 14:37:40,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:40,230 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:37:40,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [293550520] [2020-09-25 14:37:40,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:37:40,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:37:40,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874332659] [2020-09-25 14:37:40,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:37:40,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:37:40,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:37:40,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:37:40,233 INFO L87 Difference]: Start difference. First operand 2440 states and 2932 transitions. Second operand 5 states. [2020-09-25 14:37:42,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:37:42,285 INFO L93 Difference]: Finished difference Result 3880 states and 4869 transitions. [2020-09-25 14:37:42,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:37:42,286 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-09-25 14:37:42,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:37:42,311 INFO L225 Difference]: With dead ends: 3880 [2020-09-25 14:37:42,312 INFO L226 Difference]: Without dead ends: 3878 [2020-09-25 14:37:42,315 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:37:42,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3878 states. [2020-09-25 14:37:42,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3878 to 3163. [2020-09-25 14:37:42,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3163 states. [2020-09-25 14:37:42,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3163 states to 3163 states and 3939 transitions. [2020-09-25 14:37:42,423 INFO L78 Accepts]: Start accepts. Automaton has 3163 states and 3939 transitions. Word has length 155 [2020-09-25 14:37:42,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:37:42,424 INFO L479 AbstractCegarLoop]: Abstraction has 3163 states and 3939 transitions. [2020-09-25 14:37:42,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:37:42,424 INFO L276 IsEmpty]: Start isEmpty. Operand 3163 states and 3939 transitions. [2020-09-25 14:37:42,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-25 14:37:42,438 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:37:42,438 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:37:42,438 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:37:42,438 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:37:42,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:37:42,439 INFO L82 PathProgramCache]: Analyzing trace with hash 479077002, now seen corresponding path program 1 times [2020-09-25 14:37:42,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:37:42,439 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1651869234] [2020-09-25 14:37:42,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:37:42,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:42,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:42,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:42,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking...