/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 --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/Problem14_label21.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:31:23,943 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:31:23,948 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:31:23,989 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:31:23,990 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:31:23,998 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:31:24,001 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:31:24,004 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:31:24,007 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:31:24,011 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:31:24,012 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:31:24,013 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:31:24,013 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:31:24,016 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:31:24,019 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:31:24,020 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:31:24,022 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:31:24,023 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:31:24,025 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:31:24,033 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:31:24,036 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:31:24,037 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:31:24,038 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:31:24,039 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:31:24,051 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:31:24,052 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:31:24,059 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:31:24,060 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:31:24,061 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:31:24,062 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:31:24,062 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:31:24,063 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:31:24,067 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:31:24,069 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:31:24,070 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:31:24,071 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:31:24,072 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:31:24,072 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:31:24,072 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:31:24,074 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:31:24,074 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:31:24,077 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 04:31:24,126 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:31:24,127 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:31:24,129 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:31:24,130 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:31:24,130 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:31:24,130 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:31:24,131 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:31:24,131 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:31:24,131 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:31:24,131 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:31:24,132 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:31:24,132 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:31:24,133 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:31:24,133 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:31:24,133 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:31:24,134 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:31:24,134 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:31:24,134 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:31:24,134 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:31:24,134 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:31:24,135 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:31:24,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:31:24,135 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:31:24,135 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:31:24,135 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:31:24,136 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:31:24,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:31:24,136 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:31:24,136 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:31:24,136 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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-09-25 04:31:24,577 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:31:24,605 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:31:24,610 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:31:24,611 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:31:24,612 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:31:24,613 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label21.c [2020-09-25 04:31:24,706 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/189413f4d/c6cc55baeb6746e998f045f1e732de75/FLAG544b76186 [2020-09-25 04:31:25,368 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:31:25,369 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label21.c [2020-09-25 04:31:25,399 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/189413f4d/c6cc55baeb6746e998f045f1e732de75/FLAG544b76186 [2020-09-25 04:31:25,601 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/189413f4d/c6cc55baeb6746e998f045f1e732de75 [2020-09-25 04:31:25,617 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:31:25,623 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:31:25,628 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:31:25,629 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:31:25,633 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:31:25,634 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:31:25" (1/1) ... [2020-09-25 04:31:25,640 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@629d3d05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:25, skipping insertion in model container [2020-09-25 04:31:25,640 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:31:25" (1/1) ... [2020-09-25 04:31:25,651 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:31:25,730 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:31:26,515 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:31:26,521 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:31:26,649 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:31:26,669 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:31:26,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:26 WrapperNode [2020-09-25 04:31:26,670 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:31:26,671 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:31:26,671 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:31:26,671 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:31:26,690 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:26" (1/1) ... [2020-09-25 04:31:26,690 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:26" (1/1) ... [2020-09-25 04:31:26,723 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:26" (1/1) ... [2020-09-25 04:31:26,723 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:26" (1/1) ... [2020-09-25 04:31:26,798 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:26" (1/1) ... [2020-09-25 04:31:26,827 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:26" (1/1) ... [2020-09-25 04:31:26,844 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:26" (1/1) ... [2020-09-25 04:31:26,860 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:31:26,861 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:31:26,861 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:31:26,861 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:31:26,863 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:26" (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 04:31:26,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:31:26,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:31:26,945 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 04:31:26,945 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:31:26,945 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 04:31:26,945 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:31:26,945 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:31:26,946 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:31:26,946 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:31:26,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:31:26,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:31:28,784 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:31:28,785 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 04:31:28,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:31:28 BoogieIcfgContainer [2020-09-25 04:31:28,805 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:31:28,806 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:31:28,806 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:31:28,810 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:31:28,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:31:25" (1/3) ... [2020-09-25 04:31:28,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bd2f6ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:31:28, skipping insertion in model container [2020-09-25 04:31:28,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:26" (2/3) ... [2020-09-25 04:31:28,813 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bd2f6ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:31:28, skipping insertion in model container [2020-09-25 04:31:28,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:31:28" (3/3) ... [2020-09-25 04:31:28,817 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label21.c [2020-09-25 04:31:28,829 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:31:28,845 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:31:28,869 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:31:28,911 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:31:28,912 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:31:28,912 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:31:28,912 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:31:28,913 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:31:28,913 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:31:28,913 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:31:28,913 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:31:28,960 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states. [2020-09-25 04:31:28,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 04:31:28,973 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:28,975 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] [2020-09-25 04:31:28,975 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:28,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:28,984 INFO L82 PathProgramCache]: Analyzing trace with hash -2130690894, now seen corresponding path program 1 times [2020-09-25 04:31:28,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:28,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [973664715] [2020-09-25 04:31:28,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:29,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:29,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:29,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:29,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:29,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-25 04:31:29,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:31:29,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 638 [2020-09-25 04:31:29,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:29,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:29,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:31:29,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 04:31:29,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 04:31:29,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 04:31:30,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:31:30,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:30,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:30,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:30,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:31:30,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:30,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 04:31:30,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:30,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:30,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:31:30,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:30,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:31:30,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:30,145 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 04:31:30,146 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [973664715] [2020-09-25 04:31:30,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:31:30,149 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:31:30,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100898433] [2020-09-25 04:31:30,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:31:30,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:31:30,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:31:30,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:31:30,189 INFO L87 Difference]: Start difference. First operand 678 states. Second operand 4 states. [2020-09-25 04:31:33,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:31:33,181 INFO L93 Difference]: Finished difference Result 1656 states and 2196 transitions. [2020-09-25 04:31:33,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:31:33,184 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-09-25 04:31:33,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:31:33,214 INFO L225 Difference]: With dead ends: 1656 [2020-09-25 04:31:33,214 INFO L226 Difference]: Without dead ends: 920 [2020-09-25 04:31:33,229 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:31:33,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2020-09-25 04:31:33,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 806. [2020-09-25 04:31:33,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 806 states. [2020-09-25 04:31:33,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 969 transitions. [2020-09-25 04:31:33,343 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 969 transitions. Word has length 53 [2020-09-25 04:31:33,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:31:33,348 INFO L479 AbstractCegarLoop]: Abstraction has 806 states and 969 transitions. [2020-09-25 04:31:33,349 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:31:33,349 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 969 transitions. [2020-09-25 04:31:33,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-09-25 04:31:33,361 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:33,361 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, 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] [2020-09-25 04:31:33,361 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:31:33,362 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:33,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:33,362 INFO L82 PathProgramCache]: Analyzing trace with hash -2128467461, now seen corresponding path program 1 times [2020-09-25 04:31:33,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:33,363 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1143532756] [2020-09-25 04:31:33,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:33,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:33,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:33,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:33,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:34,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:34,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:36,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:36,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-09-25 04:31:36,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:31:36,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2702 [2020-09-25 04:31:36,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:36,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:36,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:36,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-09-25 04:31:36,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 04:31:36,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:36,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:31:36,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:36,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:36,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:36,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:31:36,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:36,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 04:31:36,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:36,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:36,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:31:36,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:36,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:31:36,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:36,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:31:36,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:36,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:36,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:36,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 04:31:36,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:36,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-09-25 04:31:36,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:36,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:36,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:31:36,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:36,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 04:31:36,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:36,407 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:31:36,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1143532756] [2020-09-25 04:31:36,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:31:36,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:31:36,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809226278] [2020-09-25 04:31:36,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:31:36,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:31:36,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:31:36,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:31:36,412 INFO L87 Difference]: Start difference. First operand 806 states and 969 transitions. Second operand 5 states. [2020-09-25 04:31:39,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:31:39,294 INFO L93 Difference]: Finished difference Result 2007 states and 2507 transitions. [2020-09-25 04:31:39,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:31:39,295 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2020-09-25 04:31:39,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:31:39,303 INFO L225 Difference]: With dead ends: 2007 [2020-09-25 04:31:39,303 INFO L226 Difference]: Without dead ends: 1021 [2020-09-25 04:31:39,307 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:31:39,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1021 states. [2020-09-25 04:31:39,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1021 to 993. [2020-09-25 04:31:39,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 993 states. [2020-09-25 04:31:39,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 993 states to 993 states and 1165 transitions. [2020-09-25 04:31:39,343 INFO L78 Accepts]: Start accepts. Automaton has 993 states and 1165 transitions. Word has length 132 [2020-09-25 04:31:39,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:31:39,344 INFO L479 AbstractCegarLoop]: Abstraction has 993 states and 1165 transitions. [2020-09-25 04:31:39,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:31:39,344 INFO L276 IsEmpty]: Start isEmpty. Operand 993 states and 1165 transitions. [2020-09-25 04:31:39,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-09-25 04:31:39,351 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:39,352 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, 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] [2020-09-25 04:31:39,352 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:31:39,352 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:39,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:39,353 INFO L82 PathProgramCache]: Analyzing trace with hash 1607078394, now seen corresponding path program 1 times [2020-09-25 04:31:39,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:39,353 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [154407849] [2020-09-25 04:31:39,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:39,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:39,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:39,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:39,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:40,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:40,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:40,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:42,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:42,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-25 04:31:42,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:31:42,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3314 [2020-09-25 04:31:42,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:42,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:42,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:42,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 04:31:42,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 04:31:42,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:42,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:31:42,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:42,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:42,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:42,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:31:42,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:42,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 04:31:42,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:42,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:42,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:31:42,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:42,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:31:42,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:42,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:31:42,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:42,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:42,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:42,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 04:31:42,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:42,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-25 04:31:42,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:42,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:42,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:31:42,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:42,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 04:31:42,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:42,994 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:31:42,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [154407849] [2020-09-25 04:31:42,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:31:42,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:31:42,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324399282] [2020-09-25 04:31:42,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:31:42,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:31:42,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:31:42,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:31:42,997 INFO L87 Difference]: Start difference. First operand 993 states and 1165 transitions. Second operand 5 states. [2020-09-25 04:31:45,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:31:45,738 INFO L93 Difference]: Finished difference Result 2586 states and 3123 transitions. [2020-09-25 04:31:45,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:31:45,739 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 140 [2020-09-25 04:31:45,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:31:45,752 INFO L225 Difference]: With dead ends: 2586 [2020-09-25 04:31:45,752 INFO L226 Difference]: Without dead ends: 1608 [2020-09-25 04:31:45,756 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:31:45,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1608 states. [2020-09-25 04:31:45,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1608 to 1388. [2020-09-25 04:31:45,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1388 states. [2020-09-25 04:31:45,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 1626 transitions. [2020-09-25 04:31:45,812 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 1626 transitions. Word has length 140 [2020-09-25 04:31:45,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:31:45,815 INFO L479 AbstractCegarLoop]: Abstraction has 1388 states and 1626 transitions. [2020-09-25 04:31:45,818 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:31:45,819 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 1626 transitions. [2020-09-25 04:31:45,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-09-25 04:31:45,826 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:45,826 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, 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] [2020-09-25 04:31:45,826 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:31:45,826 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:45,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:45,827 INFO L82 PathProgramCache]: Analyzing trace with hash -1257411310, now seen corresponding path program 1 times [2020-09-25 04:31:45,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:45,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [461301840] [2020-09-25 04:31:45,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:45,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:45,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:46,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:46,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:47,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:47,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:50,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:50,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-09-25 04:31:50,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:31:50,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4181 [2020-09-25 04:31:50,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:50,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:50,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:50,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-09-25 04:31:50,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 04:31:50,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:50,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:31:50,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:50,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:50,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:50,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:31:50,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:50,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 04:31:50,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:50,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:50,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:31:50,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:50,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:31:50,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:50,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:31:50,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:50,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:50,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:50,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-25 04:31:50,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:50,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-25 04:31:50,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:50,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:50,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:31:50,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:50,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 04:31:50,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:50,336 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:31:50,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [461301840] [2020-09-25 04:31:50,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:31:50,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:31:50,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058005504] [2020-09-25 04:31:50,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:31:50,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:31:50,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:31:50,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:31:50,342 INFO L87 Difference]: Start difference. First operand 1388 states and 1626 transitions. Second operand 5 states. [2020-09-25 04:31:53,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:31:53,022 INFO L93 Difference]: Finished difference Result 1800 states and 2219 transitions. [2020-09-25 04:31:53,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:31:53,023 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-09-25 04:31:53,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:31:53,036 INFO L225 Difference]: With dead ends: 1800 [2020-09-25 04:31:53,036 INFO L226 Difference]: Without dead ends: 1798 [2020-09-25 04:31:53,038 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:31:53,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1798 states. [2020-09-25 04:31:53,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1798 to 1770. [2020-09-25 04:31:53,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1770 states. [2020-09-25 04:31:53,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1770 states to 1770 states and 2184 transitions. [2020-09-25 04:31:53,107 INFO L78 Accepts]: Start accepts. Automaton has 1770 states and 2184 transitions. Word has length 149 [2020-09-25 04:31:53,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:31:53,108 INFO L479 AbstractCegarLoop]: Abstraction has 1770 states and 2184 transitions. [2020-09-25 04:31:53,108 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:31:53,108 INFO L276 IsEmpty]: Start isEmpty. Operand 1770 states and 2184 transitions. [2020-09-25 04:31:53,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-09-25 04:31:53,111 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:53,112 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, 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] [2020-09-25 04:31:53,112 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:31:53,112 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:53,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:53,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1135519942, now seen corresponding path program 1 times [2020-09-25 04:31:53,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:53,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [492566851] [2020-09-25 04:31:53,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:53,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:53,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:53,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:53,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:54,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:56,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:56,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:56,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-09-25 04:31:56,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:31:56,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3486 [2020-09-25 04:31:56,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:56,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:56,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:56,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-09-25 04:31:56,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 04:31:56,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:56,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:31:56,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:56,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:56,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:56,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:31:56,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:56,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:31:56,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:56,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:56,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:31:56,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:56,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:31:56,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:56,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:31:56,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:56,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:56,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:56,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 04:31:56,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:56,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-25 04:31:56,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:56,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:56,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:31:56,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:56,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-09-25 04:31:56,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:56,875 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:31:56,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [492566851] [2020-09-25 04:31:56,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:31:56,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:31:56,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44768714] [2020-09-25 04:31:56,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:31:56,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:31:56,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:31:56,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:31:56,878 INFO L87 Difference]: Start difference. First operand 1770 states and 2184 transitions. Second operand 5 states. [2020-09-25 04:32:00,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:32:00,136 INFO L93 Difference]: Finished difference Result 4458 states and 5643 transitions. [2020-09-25 04:32:00,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:32:00,138 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-09-25 04:32:00,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:32:00,155 INFO L225 Difference]: With dead ends: 4458 [2020-09-25 04:32:00,156 INFO L226 Difference]: Without dead ends: 2703 [2020-09-25 04:32:00,163 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:32:00,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2703 states. [2020-09-25 04:32:00,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2703 to 2154. [2020-09-25 04:32:00,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2154 states. [2020-09-25 04:32:00,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2154 states to 2154 states and 2707 transitions. [2020-09-25 04:32:00,241 INFO L78 Accepts]: Start accepts. Automaton has 2154 states and 2707 transitions. Word has length 155 [2020-09-25 04:32:00,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:32:00,242 INFO L479 AbstractCegarLoop]: Abstraction has 2154 states and 2707 transitions. [2020-09-25 04:32:00,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:32:00,242 INFO L276 IsEmpty]: Start isEmpty. Operand 2154 states and 2707 transitions. [2020-09-25 04:32:00,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 04:32:00,246 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:32:00,246 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, 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] [2020-09-25 04:32:00,247 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:32:00,247 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:32:00,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:32:00,248 INFO L82 PathProgramCache]: Analyzing trace with hash -688471070, now seen corresponding path program 1 times [2020-09-25 04:32:00,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:32:00,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [905112163] [2020-09-25 04:32:00,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:32:00,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:32:00,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:00,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:01,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:01,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:03,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:32:03,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-25 04:32:03,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:32:03,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2908 [2020-09-25 04:32:03,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:32:03,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:32:03,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:32:03,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 118 [2020-09-25 04:32:03,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 04:32:03,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 28 [2020-09-25 04:32:03,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:32:03,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:32:03,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:03,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:32:03,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:32:03,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:32:03,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:32:03,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:32:03,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:32:03,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:32:03,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:32:03,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:32:03,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:32:03,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:32:03,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:32:03,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:03,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:32:03,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-09-25 04:32:03,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:32:03,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-25 04:32:03,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:32:03,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:32:03,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:32:03,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:32:03,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 04:32:03,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:32:03,509 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:32:03,510 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [905112163] [2020-09-25 04:32:03,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:32:03,512 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:32:03,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594605312] [2020-09-25 04:32:03,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:32:03,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:32:03,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:32:03,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:32:03,515 INFO L87 Difference]: Start difference. First operand 2154 states and 2707 transitions. Second operand 5 states. [2020-09-25 04:32:06,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:32:06,683 INFO L93 Difference]: Finished difference Result 5280 states and 6853 transitions. [2020-09-25 04:32:06,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:32:06,684 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-09-25 04:32:06,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:32:06,703 INFO L225 Difference]: With dead ends: 5280 [2020-09-25 04:32:06,703 INFO L226 Difference]: Without dead ends: 3141 [2020-09-25 04:32:06,713 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:32:06,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3141 states. [2020-09-25 04:32:06,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3141 to 2736. [2020-09-25 04:32:06,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2736 states. [2020-09-25 04:32:06,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2736 states to 2736 states and 3484 transitions. [2020-09-25 04:32:06,830 INFO L78 Accepts]: Start accepts. Automaton has 2736 states and 3484 transitions. Word has length 156 [2020-09-25 04:32:06,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:32:06,831 INFO L479 AbstractCegarLoop]: Abstraction has 2736 states and 3484 transitions. [2020-09-25 04:32:06,831 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:32:06,831 INFO L276 IsEmpty]: Start isEmpty. Operand 2736 states and 3484 transitions. [2020-09-25 04:32:06,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2020-09-25 04:32:06,843 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:32:06,843 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:32:06,843 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 04:32:06,844 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:32:06,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:32:06,844 INFO L82 PathProgramCache]: Analyzing trace with hash -1597800751, now seen corresponding path program 1 times [2020-09-25 04:32:06,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:32:06,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [218457171] [2020-09-25 04:32:06,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:32:06,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:32:06,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:06,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:07,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:09,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:10,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:11,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:32:11,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 350 [2020-09-25 04:32:11,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:32:11,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5079 [2020-09-25 04:32:11,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:32:11,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:32:11,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:32:11,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-09-25 04:32:11,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 189 [2020-09-25 04:32:11,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:32:12,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:32:12,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:32:12,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:12,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:32:12,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:32:12,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:32:12,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:32:12,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:32:12,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:32:12,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:32:12,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:32:12,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:32:12,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:32:12,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:32:12,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:32:12,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:12,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:32:12,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-25 04:32:12,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:32:12,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-25 04:32:12,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:32:12,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:32:12,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:32:12,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:32:12,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 04:32:12,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:32:12,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-09-25 04:32:12,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:32:12,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking...