/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label38.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 08:22:22,016 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 08:22:22,019 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 08:22:22,043 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 08:22:22,044 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 08:22:22,045 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 08:22:22,046 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 08:22:22,048 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 08:22:22,050 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 08:22:22,050 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 08:22:22,051 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 08:22:22,052 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 08:22:22,053 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 08:22:22,054 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 08:22:22,055 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 08:22:22,056 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 08:22:22,057 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 08:22:22,058 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 08:22:22,059 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 08:22:22,061 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 08:22:22,063 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 08:22:22,064 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 08:22:22,065 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 08:22:22,066 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 08:22:22,070 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 08:22:22,070 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 08:22:22,070 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 08:22:22,074 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 08:22:22,075 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 08:22:22,075 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 08:22:22,076 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 08:22:22,079 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 08:22:22,080 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 08:22:22,081 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 08:22:22,082 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 08:22:22,082 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 08:22:22,085 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 08:22:22,086 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 08:22:22,087 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 08:22:22,088 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 08:22:22,089 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 08:22:22,090 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 08:22:22,140 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 08:22:22,140 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 08:22:22,141 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 08:22:22,141 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 08:22:22,141 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 08:22:22,142 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 08:22:22,144 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 08:22:22,144 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 08:22:22,144 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 08:22:22,144 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 08:22:22,144 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 08:22:22,145 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 08:22:22,145 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 08:22:22,146 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 08:22:22,146 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 08:22:22,146 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 08:22:22,146 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 08:22:22,147 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 08:22:22,147 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 08:22:22,148 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 08:22:22,148 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 08:22:22,148 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:22:22,148 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 08:22:22,148 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 08:22:22,149 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 08:22:22,149 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 08:22:22,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 08:22:22,150 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 08:22:22,150 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 08:22:22,150 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 08:22:22,465 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 08:22:22,478 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 08:22:22,482 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 08:22:22,483 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 08:22:22,484 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 08:22:22,484 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label38.c [2020-10-13 08:22:22,560 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a0d444d5f/ccdb17e62e6840d3a94e7d36b87e5f12/FLAG321e8850e [2020-10-13 08:22:23,401 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 08:22:23,402 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label38.c [2020-10-13 08:22:23,444 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a0d444d5f/ccdb17e62e6840d3a94e7d36b87e5f12/FLAG321e8850e [2020-10-13 08:22:23,505 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a0d444d5f/ccdb17e62e6840d3a94e7d36b87e5f12 [2020-10-13 08:22:23,516 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 08:22:23,518 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 08:22:23,521 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 08:22:23,522 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 08:22:23,525 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 08:22:23,527 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:22:23" (1/1) ... [2020-10-13 08:22:23,530 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4839a71c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:22:23, skipping insertion in model container [2020-10-13 08:22:23,530 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:22:23" (1/1) ... [2020-10-13 08:22:23,539 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 08:22:23,700 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 08:22:25,301 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:22:25,309 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 08:22:25,983 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:22:26,016 INFO L208 MainTranslator]: Completed translation [2020-10-13 08:22:26,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:22:26 WrapperNode [2020-10-13 08:22:26,018 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 08:22:26,019 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 08:22:26,019 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 08:22:26,020 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 08:22:26,035 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:22:26" (1/1) ... [2020-10-13 08:22:26,037 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:22:26" (1/1) ... [2020-10-13 08:22:26,095 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:22:26" (1/1) ... [2020-10-13 08:22:26,096 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:22:26" (1/1) ... [2020-10-13 08:22:26,203 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:22:26" (1/1) ... [2020-10-13 08:22:26,248 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:22:26" (1/1) ... [2020-10-13 08:22:26,278 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:22:26" (1/1) ... [2020-10-13 08:22:26,324 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 08:22:26,324 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 08:22:26,325 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 08:22:26,325 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 08:22:26,326 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:22:26" (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 [2020-10-13 08:22:26,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 08:22:26,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 08:22:26,407 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 08:22:26,407 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 08:22:26,407 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 08:22:26,407 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 08:22:26,408 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 08:22:26,410 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 08:22:26,410 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 08:22:26,410 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 08:22:26,410 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 08:22:26,411 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 08:22:26,411 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 08:22:26,411 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 08:22:26,411 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 08:22:26,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 08:22:26,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 08:22:31,712 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 08:22:31,712 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 08:22:31,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:22:31 BoogieIcfgContainer [2020-10-13 08:22:31,736 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 08:22:31,739 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 08:22:31,739 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 08:22:31,742 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 08:22:31,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:22:23" (1/3) ... [2020-10-13 08:22:31,744 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7420030f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:22:31, skipping insertion in model container [2020-10-13 08:22:31,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:22:26" (2/3) ... [2020-10-13 08:22:31,745 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7420030f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:22:31, skipping insertion in model container [2020-10-13 08:22:31,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:22:31" (3/3) ... [2020-10-13 08:22:31,748 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label38.c [2020-10-13 08:22:31,761 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 08:22:31,774 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 08:22:31,792 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 08:22:31,827 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 08:22:31,828 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 08:22:31,828 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 08:22:31,828 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 08:22:31,828 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 08:22:31,828 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 08:22:31,829 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 08:22:31,829 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 08:22:31,876 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-13 08:22:31,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-13 08:22:31,886 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:22:31,888 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] [2020-10-13 08:22:31,888 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:22:31,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:22:31,896 INFO L82 PathProgramCache]: Analyzing trace with hash -1431162507, now seen corresponding path program 1 times [2020-10-13 08:22:31,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:22:31,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [871880120] [2020-10-13 08:22:31,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:22:32,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:22:32,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:32,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:22:32,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 08:22:32,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:22:32,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 373 [2020-10-13 08:22:32,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:22:32,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:22:32,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:22:32,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 08:22:32,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 08:22:32,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:22:32,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:22:32,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:32,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:22:32,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:22:32,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:22:32,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 08:22:32,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:22:32,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:22:32,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:22:32,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:22:32,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:22:32,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:22:32,740 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [871880120] [2020-10-13 08:22:32,742 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:22:32,743 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 08:22:32,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130768799] [2020-10-13 08:22:32,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 08:22:32,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:22:32,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 08:22:32,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 08:22:32,769 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 4 states. [2020-10-13 08:22:41,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:22:41,365 INFO L93 Difference]: Finished difference Result 2471 states and 4736 transitions. [2020-10-13 08:22:41,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:22:41,368 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-10-13 08:22:41,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:22:41,400 INFO L225 Difference]: With dead ends: 2471 [2020-10-13 08:22:41,400 INFO L226 Difference]: Without dead ends: 1568 [2020-10-13 08:22:41,413 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:22:41,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-13 08:22:41,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553. [2020-10-13 08:22:41,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1553 states. [2020-10-13 08:22:41,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2521 transitions. [2020-10-13 08:22:41,558 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2521 transitions. Word has length 30 [2020-10-13 08:22:41,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:22:41,561 INFO L479 AbstractCegarLoop]: Abstraction has 1553 states and 2521 transitions. [2020-10-13 08:22:41,561 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 08:22:41,562 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2521 transitions. [2020-10-13 08:22:41,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-13 08:22:41,569 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:22:41,570 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:22:41,570 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 08:22:41,571 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:22:41,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:22:41,571 INFO L82 PathProgramCache]: Analyzing trace with hash -809031011, now seen corresponding path program 1 times [2020-10-13 08:22:41,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:22:41,572 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [56466962] [2020-10-13 08:22:41,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:22:41,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:22:41,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:41,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:42,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:22:42,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-13 08:22:42,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:22:42,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 552 [2020-10-13 08:22:42,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:22:42,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:22:42,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-13 08:22:42,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 08:22:42,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:22:42,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:22:42,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:22:42,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:42,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:22:42,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:22:42,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:22:42,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:22:42,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:22:42,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:22:42,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:22:42,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:22:42,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:22:42,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:22:42,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:22:42,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:42,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:22:42,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 08:22:42,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:22:42,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-13 08:22:42,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:22:42,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:22:42,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:22:42,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 08:22:42,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:22:42,466 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:22:42,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [56466962] [2020-10-13 08:22:42,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:22:42,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:22:42,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617244523] [2020-10-13 08:22:42,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:22:42,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:22:42,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:22:42,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:22:42,470 INFO L87 Difference]: Start difference. First operand 1553 states and 2521 transitions. Second operand 5 states. [2020-10-13 08:22:51,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:22:51,582 INFO L93 Difference]: Finished difference Result 4672 states and 7649 transitions. [2020-10-13 08:22:51,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:22:51,583 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-10-13 08:22:51,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:22:51,600 INFO L225 Difference]: With dead ends: 4672 [2020-10-13 08:22:51,601 INFO L226 Difference]: Without dead ends: 3125 [2020-10-13 08:22:51,606 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 [2020-10-13 08:22:51,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3125 states. [2020-10-13 08:22:51,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3125 to 3109. [2020-10-13 08:22:51,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3109 states. [2020-10-13 08:22:51,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3109 states to 3109 states and 4247 transitions. [2020-10-13 08:22:51,694 INFO L78 Accepts]: Start accepts. Automaton has 3109 states and 4247 transitions. Word has length 105 [2020-10-13 08:22:51,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:22:51,695 INFO L479 AbstractCegarLoop]: Abstraction has 3109 states and 4247 transitions. [2020-10-13 08:22:51,695 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:22:51,695 INFO L276 IsEmpty]: Start isEmpty. Operand 3109 states and 4247 transitions. [2020-10-13 08:22:51,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-13 08:22:51,698 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:22:51,699 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:22:51,699 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 08:22:51,699 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:22:51,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:22:51,700 INFO L82 PathProgramCache]: Analyzing trace with hash -813548772, now seen corresponding path program 1 times [2020-10-13 08:22:51,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:22:51,700 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2122603117] [2020-10-13 08:22:51,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:22:51,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:22:51,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:52,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:52,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:52,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:22:52,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-13 08:22:52,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:22:52,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1003 [2020-10-13 08:22:52,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:22:52,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:22:52,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-13 08:22:52,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 08:22:52,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:22:52,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:22:52,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:22:52,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:52,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:22:52,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:22:52,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:22:52,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:22:52,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:22:52,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:22:52,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:22:52,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:22:52,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:22:52,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:22:52,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:22:52,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:52,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:22:52,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-13 08:22:52,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:22:52,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-13 08:22:52,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:22:52,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:22:52,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:22:52,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-13 08:22:52,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:22:53,021 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:22:53,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2122603117] [2020-10-13 08:22:53,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:22:53,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:22:53,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119633848] [2020-10-13 08:22:53,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:22:53,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:22:53,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:22:53,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:22:53,025 INFO L87 Difference]: Start difference. First operand 3109 states and 4247 transitions. Second operand 5 states. [2020-10-13 08:23:01,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:23:01,953 INFO L93 Difference]: Finished difference Result 7784 states and 11134 transitions. [2020-10-13 08:23:01,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:23:01,958 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-13 08:23:01,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:23:01,983 INFO L225 Difference]: With dead ends: 7784 [2020-10-13 08:23:01,983 INFO L226 Difference]: Without dead ends: 4681 [2020-10-13 08:23:01,991 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:23:01,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4681 states. [2020-10-13 08:23:02,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4681 to 4673. [2020-10-13 08:23:02,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4673 states. [2020-10-13 08:23:02,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4673 states to 4673 states and 6164 transitions. [2020-10-13 08:23:02,196 INFO L78 Accepts]: Start accepts. Automaton has 4673 states and 6164 transitions. Word has length 108 [2020-10-13 08:23:02,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:23:02,198 INFO L479 AbstractCegarLoop]: Abstraction has 4673 states and 6164 transitions. [2020-10-13 08:23:02,198 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:23:02,199 INFO L276 IsEmpty]: Start isEmpty. Operand 4673 states and 6164 transitions. [2020-10-13 08:23:02,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-13 08:23:02,212 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:23:02,212 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:23:02,213 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 08:23:02,213 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:23:02,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:23:02,214 INFO L82 PathProgramCache]: Analyzing trace with hash 1661814604, now seen corresponding path program 1 times [2020-10-13 08:23:02,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:23:02,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [616016392] [2020-10-13 08:23:02,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:23:02,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:23:02,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:02,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:03,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:23:03,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-13 08:23:03,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:23:03,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 894 [2020-10-13 08:23:03,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:23:03,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:23:03,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-10-13 08:23:03,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 08:23:03,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:23:03,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:23:03,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:23:03,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:03,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:23:03,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:23:03,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:23:03,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:23:03,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:23:03,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:23:03,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:23:03,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:23:03,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:23:03,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:23:03,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:23:03,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:03,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:23:03,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-13 08:23:03,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:23:03,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-13 08:23:03,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:23:03,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:23:03,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:23:03,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-13 08:23:03,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:23:03,454 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:23:03,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [616016392] [2020-10-13 08:23:03,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:23:03,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:23:03,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44065506] [2020-10-13 08:23:03,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:23:03,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:23:03,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:23:03,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:23:03,461 INFO L87 Difference]: Start difference. First operand 4673 states and 6164 transitions. Second operand 5 states. [2020-10-13 08:23:14,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:23:14,781 INFO L93 Difference]: Finished difference Result 14024 states and 18821 transitions. [2020-10-13 08:23:14,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:23:14,782 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-10-13 08:23:14,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:23:14,830 INFO L225 Difference]: With dead ends: 14024 [2020-10-13 08:23:14,830 INFO L226 Difference]: Without dead ends: 9357 [2020-10-13 08:23:14,844 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 [2020-10-13 08:23:14,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9357 states. [2020-10-13 08:23:15,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9357 to 9340. [2020-10-13 08:23:15,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9340 states. [2020-10-13 08:23:15,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9340 states to 9340 states and 12074 transitions. [2020-10-13 08:23:15,122 INFO L78 Accepts]: Start accepts. Automaton has 9340 states and 12074 transitions. Word has length 148 [2020-10-13 08:23:15,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:23:15,124 INFO L479 AbstractCegarLoop]: Abstraction has 9340 states and 12074 transitions. [2020-10-13 08:23:15,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:23:15,125 INFO L276 IsEmpty]: Start isEmpty. Operand 9340 states and 12074 transitions. [2020-10-13 08:23:15,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-13 08:23:15,129 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:23:15,129 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, 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] [2020-10-13 08:23:15,129 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 08:23:15,130 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:23:15,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:23:15,130 INFO L82 PathProgramCache]: Analyzing trace with hash -1247826320, now seen corresponding path program 1 times [2020-10-13 08:23:15,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:23:15,130 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1646064367] [2020-10-13 08:23:15,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:23:15,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:23:15,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:15,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:15,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:16,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:16,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:17,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:23:17,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-13 08:23:17,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 08:23:17,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2051 [2020-10-13 08:23:17,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:23:17,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:23:17,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-13 08:23:17,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 08:23:17,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:23:17,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:23:17,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:23:17,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:17,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:23:17,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:23:17,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:23:17,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:23:17,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:23:17,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:23:17,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:23:17,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:23:17,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:23:17,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:23:17,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:23:17,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:17,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:23:17,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 08:23:17,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:23:17,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 08:23:17,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:23:17,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:23:17,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:23:17,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:23:17,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:23:17,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 08:23:17,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:23:17,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:17,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:23:17,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 08:23:17,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:23:17,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-13 08:23:17,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:23:17,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:23:17,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:23:17,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 08:23:17,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-13 08:23:17,604 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 47 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-13 08:23:17,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1646064367] [2020-10-13 08:23:17,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:23:17,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:23:17,606 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480022268] [2020-10-13 08:23:17,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:23:17,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:23:17,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:23:17,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:23:17,608 INFO L87 Difference]: Start difference. First operand 9340 states and 12074 transitions. Second operand 5 states. [2020-10-13 08:23:25,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:23:25,899 INFO L93 Difference]: Finished difference Result 18703 states and 24225 transitions. [2020-10-13 08:23:25,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:23:25,901 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 177 [2020-10-13 08:23:25,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:23:25,937 INFO L225 Difference]: With dead ends: 18703 [2020-10-13 08:23:25,938 INFO L226 Difference]: Without dead ends: 9357 [2020-10-13 08:23:25,957 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:23:25,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9357 states. [2020-10-13 08:23:26,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9357 to 9340. [2020-10-13 08:23:26,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9340 states. [2020-10-13 08:23:26,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9340 states to 9340 states and 12070 transitions. [2020-10-13 08:23:26,141 INFO L78 Accepts]: Start accepts. Automaton has 9340 states and 12070 transitions. Word has length 177 [2020-10-13 08:23:26,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:23:26,142 INFO L479 AbstractCegarLoop]: Abstraction has 9340 states and 12070 transitions. [2020-10-13 08:23:26,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:23:26,142 INFO L276 IsEmpty]: Start isEmpty. Operand 9340 states and 12070 transitions. [2020-10-13 08:23:26,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-10-13 08:23:26,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:23:26,146 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, 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] [2020-10-13 08:23:26,146 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 08:23:26,146 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:23:26,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:23:26,147 INFO L82 PathProgramCache]: Analyzing trace with hash -676670626, now seen corresponding path program 1 times [2020-10-13 08:23:26,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:23:26,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2134282815] [2020-10-13 08:23:26,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:23:26,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:23:26,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:26,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:26,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:27,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:28,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:29,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:23:29,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-13 08:23:29,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 08:23:29,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3275 [2020-10-13 08:23:29,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:23:29,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:23:29,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 161 [2020-10-13 08:23:29,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 08:23:29,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:23:29,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:23:29,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:23:29,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:29,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:23:29,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:23:29,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:23:29,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:23:29,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:23:29,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:23:29,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:23:29,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:23:29,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:23:29,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:23:29,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:23:29,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:29,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:23:29,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-13 08:23:29,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:23:29,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 08:23:29,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:23:29,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:23:29,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:23:29,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:23:29,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:23:29,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-13 08:23:29,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:23:29,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:29,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:23:29,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 08:23:29,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:23:29,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-13 08:23:29,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:23:29,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:23:29,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:23:29,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 08:23:29,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:23:29,694 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 47 proven. 2 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-10-13 08:23:29,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2134282815] [2020-10-13 08:23:29,694 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:23:29,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:23:29,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405656589] [2020-10-13 08:23:29,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:23:29,696 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:23:29,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:23:29,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:23:29,696 INFO L87 Difference]: Start difference. First operand 9340 states and 12070 transitions. Second operand 5 states. [2020-10-13 08:23:40,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:23:40,309 INFO L93 Difference]: Finished difference Result 23344 states and 31130 transitions. [2020-10-13 08:23:40,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:23:40,311 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 179 [2020-10-13 08:23:40,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:23:40,362 INFO L225 Difference]: With dead ends: 23344 [2020-10-13 08:23:40,363 INFO L226 Difference]: Without dead ends: 14010 [2020-10-13 08:23:40,380 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:23:40,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14010 states. [2020-10-13 08:23:40,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14010 to 13998. [2020-10-13 08:23:40,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13998 states. [2020-10-13 08:23:40,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13998 states to 13998 states and 18354 transitions. [2020-10-13 08:23:40,666 INFO L78 Accepts]: Start accepts. Automaton has 13998 states and 18354 transitions. Word has length 179 [2020-10-13 08:23:40,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:23:40,667 INFO L479 AbstractCegarLoop]: Abstraction has 13998 states and 18354 transitions. [2020-10-13 08:23:40,667 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:23:40,667 INFO L276 IsEmpty]: Start isEmpty. Operand 13998 states and 18354 transitions. [2020-10-13 08:23:40,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-13 08:23:40,672 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:23:40,672 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:23:40,673 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 08:23:40,673 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:23:40,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:23:40,674 INFO L82 PathProgramCache]: Analyzing trace with hash -1691233168, now seen corresponding path program 1 times [2020-10-13 08:23:40,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:23:40,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [777425098] [2020-10-13 08:23:40,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:23:40,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:23:40,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:40,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:42,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:23:42,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-13 08:23:42,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:23:42,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1540 [2020-10-13 08:23:42,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:23:42,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:23:42,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-13 08:23:42,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 08:23:42,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:23:42,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:23:42,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:23:42,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:42,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:23:42,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:23:42,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:23:42,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:23:42,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:23:42,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:23:42,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:23:42,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:23:42,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:23:42,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:23:42,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:23:42,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:42,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:23:42,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-13 08:23:42,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:23:42,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-13 08:23:42,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:23:42,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:23:42,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:23:42,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-13 08:23:42,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:23:42,885 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:23:42,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [777425098] [2020-10-13 08:23:42,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:23:42,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:23:42,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848422932] [2020-10-13 08:23:42,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:23:42,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:23:42,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:23:42,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:23:42,890 INFO L87 Difference]: Start difference. First operand 13998 states and 18354 transitions. Second operand 5 states. [2020-10-13 08:23:54,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:23:54,058 INFO L93 Difference]: Finished difference Result 35013 states and 47071 transitions. [2020-10-13 08:23:54,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:23:54,066 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 178 [2020-10-13 08:23:54,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:23:54,158 INFO L225 Difference]: With dead ends: 35013 [2020-10-13 08:23:54,159 INFO L226 Difference]: Without dead ends: 21021 [2020-10-13 08:23:54,191 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 [2020-10-13 08:23:54,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21021 states. [2020-10-13 08:23:54,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21021 to 21013. [2020-10-13 08:23:54,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21013 states. [2020-10-13 08:23:54,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21013 states to 21013 states and 27751 transitions. [2020-10-13 08:23:54,739 INFO L78 Accepts]: Start accepts. Automaton has 21013 states and 27751 transitions. Word has length 178 [2020-10-13 08:23:54,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:23:54,740 INFO L479 AbstractCegarLoop]: Abstraction has 21013 states and 27751 transitions. [2020-10-13 08:23:54,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:23:54,740 INFO L276 IsEmpty]: Start isEmpty. Operand 21013 states and 27751 transitions. [2020-10-13 08:23:54,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-10-13 08:23:54,748 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:23:54,748 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, 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] [2020-10-13 08:23:54,748 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 08:23:54,749 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:23:54,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:23:54,749 INFO L82 PathProgramCache]: Analyzing trace with hash -847079728, now seen corresponding path program 1 times [2020-10-13 08:23:54,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:23:54,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [248283137] [2020-10-13 08:23:54,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:23:54,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:23:54,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:54,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:55,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:56,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:58,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:59,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:23:59,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 237 [2020-10-13 08:23:59,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 08:23:59,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4996 [2020-10-13 08:23:59,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:23:59,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:23:59,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 207 [2020-10-13 08:23:59,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 08:23:59,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:23:59,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:23:59,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:23:59,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:59,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:23:59,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:23:59,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:23:59,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:23:59,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:23:59,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:23:59,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:23:59,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:23:59,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:23:59,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:23:59,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:23:59,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:00,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:24:00,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 08:24:00,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:24:00,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 08:24:00,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:24:00,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:24:00,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:24:00,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:24:00,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:24:00,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-13 08:24:00,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:24:00,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:00,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:24:00,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 08:24:00,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:24:00,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-13 08:24:00,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:24:00,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:24:00,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:24:00,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 08:24:00,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:24:00,272 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 47 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-13 08:24:00,272 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [248283137] [2020-10-13 08:24:00,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:24:00,273 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:24:00,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140633935] [2020-10-13 08:24:00,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:24:00,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:24:00,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:24:00,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:24:00,277 INFO L87 Difference]: Start difference. First operand 21013 states and 27751 transitions. Second operand 5 states. [2020-10-13 08:24:19,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:24:19,440 INFO L93 Difference]: Finished difference Result 61403 states and 83738 transitions. [2020-10-13 08:24:19,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:24:19,442 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 225 [2020-10-13 08:24:19,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:24:19,624 INFO L225 Difference]: With dead ends: 61403 [2020-10-13 08:24:19,624 INFO L226 Difference]: Without dead ends: 40396 [2020-10-13 08:24:19,675 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:24:19,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40396 states. [2020-10-13 08:24:21,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40396 to 36549. [2020-10-13 08:24:21,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36549 states. [2020-10-13 08:24:21,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36549 states to 36549 states and 47834 transitions. [2020-10-13 08:24:21,804 INFO L78 Accepts]: Start accepts. Automaton has 36549 states and 47834 transitions. Word has length 225 [2020-10-13 08:24:21,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:24:21,805 INFO L479 AbstractCegarLoop]: Abstraction has 36549 states and 47834 transitions. [2020-10-13 08:24:21,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:24:21,806 INFO L276 IsEmpty]: Start isEmpty. Operand 36549 states and 47834 transitions. [2020-10-13 08:24:21,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2020-10-13 08:24:21,823 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:24:21,823 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:24:21,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 08:24:21,824 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:24:21,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:24:21,825 INFO L82 PathProgramCache]: Analyzing trace with hash 1327846432, now seen corresponding path program 1 times [2020-10-13 08:24:21,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:24:21,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1358128845] [2020-10-13 08:24:21,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:24:21,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:24:21,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:22,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:23,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:24:23,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 292 [2020-10-13 08:24:23,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:24:23,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1127 [2020-10-13 08:24:23,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:24:23,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:24:23,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 262 [2020-10-13 08:24:23,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 08:24:23,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:24:23,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:24:23,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:24:23,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:23,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:24:23,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:24:23,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:24:23,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:24:23,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:24:23,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:24:23,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:24:23,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:24:23,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:24:23,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:24:23,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:24:23,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:23,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:24:23,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-10-13 08:24:23,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:24:23,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-10-13 08:24:23,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:24:23,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:24:23,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:24:23,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 247 [2020-10-13 08:24:23,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:24:23,624 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:24:23,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1358128845] [2020-10-13 08:24:23,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:24:23,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:24:23,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84972058] [2020-10-13 08:24:23,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:24:23,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:24:23,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:24:23,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:24:23,627 INFO L87 Difference]: Start difference. First operand 36549 states and 47834 transitions. Second operand 5 states. [2020-10-13 08:24:40,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:24:40,780 INFO L93 Difference]: Finished difference Result 104061 states and 140722 transitions. [2020-10-13 08:24:40,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:24:40,782 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 282 [2020-10-13 08:24:40,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:24:41,000 INFO L225 Difference]: With dead ends: 104061 [2020-10-13 08:24:41,000 INFO L226 Difference]: Without dead ends: 67518 [2020-10-13 08:24:41,058 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 [2020-10-13 08:24:41,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67518 states. [2020-10-13 08:24:42,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67518 to 66739. [2020-10-13 08:24:42,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66739 states. [2020-10-13 08:24:42,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66739 states to 66739 states and 86883 transitions. [2020-10-13 08:24:42,184 INFO L78 Accepts]: Start accepts. Automaton has 66739 states and 86883 transitions. Word has length 282 [2020-10-13 08:24:42,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:24:42,185 INFO L479 AbstractCegarLoop]: Abstraction has 66739 states and 86883 transitions. [2020-10-13 08:24:42,185 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:24:42,185 INFO L276 IsEmpty]: Start isEmpty. Operand 66739 states and 86883 transitions. [2020-10-13 08:24:42,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2020-10-13 08:24:42,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:24:42,221 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:24:42,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 08:24:42,221 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:24:42,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:24:42,222 INFO L82 PathProgramCache]: Analyzing trace with hash -1068456625, now seen corresponding path program 1 times [2020-10-13 08:24:42,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:24:42,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1813937327] [2020-10-13 08:24:42,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:24:42,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:24:42,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:43,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:44,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:24:44,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 391 [2020-10-13 08:24:44,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:24:44,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2255 [2020-10-13 08:24:44,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:24:44,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:24:44,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 358 [2020-10-13 08:24:44,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 08:24:44,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:24:44,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:24:44,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:24:44,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:44,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:24:44,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:24:44,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:24:44,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:24:44,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:24:44,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:24:44,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:24:44,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:24:44,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:24:44,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:24:44,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:24:44,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:44,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:24:44,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 352 [2020-10-13 08:24:44,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:24:44,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-10-13 08:24:44,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:24:44,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:24:44,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:24:44,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 343 [2020-10-13 08:24:44,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:24:44,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 08:24:45,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:24:45,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:45,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:24:45,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 08:24:45,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:24:45,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-13 08:24:45,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:24:45,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:24:45,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:24:45,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 08:24:45,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:24:45,419 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:24:45,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1813937327] [2020-10-13 08:24:45,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:24:45,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:24:45,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124416840] [2020-10-13 08:24:45,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:24:45,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:24:45,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:24:45,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:24:45,421 INFO L87 Difference]: Start difference. First operand 66739 states and 86883 transitions. Second operand 5 states. [2020-10-13 08:25:01,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:25:01,633 INFO L93 Difference]: Finished difference Result 145869 states and 195806 transitions. [2020-10-13 08:25:01,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:25:01,635 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 379 [2020-10-13 08:25:01,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:25:01,869 INFO L225 Difference]: With dead ends: 145869 [2020-10-13 08:25:01,870 INFO L226 Difference]: Without dead ends: 79136 [2020-10-13 08:25:01,964 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:25:02,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79136 states. [2020-10-13 08:25:03,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79136 to 78357. [2020-10-13 08:25:03,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78357 states. [2020-10-13 08:25:05,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78357 states to 78357 states and 100069 transitions. [2020-10-13 08:25:05,774 INFO L78 Accepts]: Start accepts. Automaton has 78357 states and 100069 transitions. Word has length 379 [2020-10-13 08:25:05,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:25:05,775 INFO L479 AbstractCegarLoop]: Abstraction has 78357 states and 100069 transitions. [2020-10-13 08:25:05,775 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:25:05,775 INFO L276 IsEmpty]: Start isEmpty. Operand 78357 states and 100069 transitions. [2020-10-13 08:25:05,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2020-10-13 08:25:05,809 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:25:05,810 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:25:05,810 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 08:25:05,810 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:25:05,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:25:05,811 INFO L82 PathProgramCache]: Analyzing trace with hash 572708001, now seen corresponding path program 1 times [2020-10-13 08:25:05,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:25:05,811 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [153518200] [2020-10-13 08:25:05,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:25:05,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:25:05,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:06,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:07,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:25:07,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 472 [2020-10-13 08:25:07,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:25:07,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1964 [2020-10-13 08:25:07,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:25:07,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:25:07,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 439 [2020-10-13 08:25:07,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 08:25:07,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:25:07,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:25:07,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:25:07,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:07,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:25:07,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:25:07,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:25:07,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:25:07,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:25:07,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:25:07,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:25:07,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:25:07,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:25:08,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:25:08,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:25:08,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:08,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:25:08,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 433 [2020-10-13 08:25:08,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:25:08,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-10-13 08:25:08,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:25:08,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:25:08,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:25:08,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 424 [2020-10-13 08:25:08,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:25:08,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 08:25:08,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:25:08,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:08,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:25:08,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-13 08:25:08,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:25:08,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-13 08:25:08,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:25:08,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:25:08,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:25:08,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-13 08:25:08,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:25:08,911 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:25:08,911 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [153518200] [2020-10-13 08:25:08,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:25:08,912 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:25:08,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890847564] [2020-10-13 08:25:08,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:25:08,913 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:25:08,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:25:08,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:25:08,914 INFO L87 Difference]: Start difference. First operand 78357 states and 100069 transitions. Second operand 5 states. [2020-10-13 08:25:26,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:25:26,219 INFO L93 Difference]: Finished difference Result 169077 states and 221924 transitions. [2020-10-13 08:25:26,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:25:26,221 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 460 [2020-10-13 08:25:26,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:25:26,436 INFO L225 Difference]: With dead ends: 169077 [2020-10-13 08:25:26,437 INFO L226 Difference]: Without dead ends: 90726 [2020-10-13 08:25:26,520 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:25:26,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90726 states. [2020-10-13 08:25:28,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90726 to 90710. [2020-10-13 08:25:28,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90710 states. [2020-10-13 08:25:28,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90710 states to 90710 states and 113950 transitions. [2020-10-13 08:25:28,304 INFO L78 Accepts]: Start accepts. Automaton has 90710 states and 113950 transitions. Word has length 460 [2020-10-13 08:25:28,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:25:28,305 INFO L479 AbstractCegarLoop]: Abstraction has 90710 states and 113950 transitions. [2020-10-13 08:25:28,305 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:25:28,305 INFO L276 IsEmpty]: Start isEmpty. Operand 90710 states and 113950 transitions. [2020-10-13 08:25:28,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 770 [2020-10-13 08:25:28,384 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:25:28,385 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:25:28,385 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 08:25:28,386 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:25:28,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:25:28,386 INFO L82 PathProgramCache]: Analyzing trace with hash 1613472127, now seen corresponding path program 1 times [2020-10-13 08:25:28,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:25:28,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [810505170] [2020-10-13 08:25:28,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:25:28,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:25:28,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:28,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:33,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:25:33,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 785 [2020-10-13 08:25:33,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:25:33,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-13 08:25:33,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:25:33,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:25:33,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:25:33,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-13 08:25:33,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:25:33,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:25:33,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:25:33,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:33,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:25:33,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:25:33,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:25:33,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 08:25:33,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:25:33,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:25:33,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:25:33,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:25:33,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:25:33,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:25:33,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:25:33,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:33,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:25:33,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 08:25:33,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:25:33,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-13 08:25:33,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:25:33,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:25:33,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:25:33,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-13 08:25:33,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:25:33,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 08:25:33,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:25:33,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:34,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:25:34,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 665 [2020-10-13 08:25:34,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:25:34,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 299 [2020-10-13 08:25:34,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:25:34,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:25:34,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 662 [2020-10-13 08:25:34,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:25:34,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:25:34,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 08:25:34,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:25:34,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:34,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:25:34,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 377 [2020-10-13 08:25:34,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:25:34,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-13 08:25:34,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:25:34,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:25:34,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:25:34,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:25:34,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:25:34,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 08:25:34,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:25:34,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:25:34,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:25:34,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-13 08:25:34,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:25:34,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 08:25:34,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:25:34,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:25:34,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:25:34,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:25:34,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:25:35,372 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 46 proven. 74 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 08:25:35,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [810505170] [2020-10-13 08:25:35,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:25:35,373 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:25:35,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062171423] [2020-10-13 08:25:35,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:25:35,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:25:35,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:25:35,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:25:35,375 INFO L87 Difference]: Start difference. First operand 90710 states and 113950 transitions. Second operand 7 states. [2020-10-13 08:25:56,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:25:56,077 INFO L93 Difference]: Finished difference Result 232384 states and 296394 transitions. [2020-10-13 08:25:56,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 08:25:56,079 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 769 [2020-10-13 08:25:56,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:25:56,410 INFO L225 Difference]: With dead ends: 232384 [2020-10-13 08:25:56,410 INFO L226 Difference]: Without dead ends: 133139 [2020-10-13 08:25:56,517 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:25:56,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133139 states. [2020-10-13 08:25:58,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133139 to 131370. [2020-10-13 08:25:58,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131370 states. [2020-10-13 08:25:59,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131370 states to 131370 states and 158248 transitions. [2020-10-13 08:25:59,081 INFO L78 Accepts]: Start accepts. Automaton has 131370 states and 158248 transitions. Word has length 769 [2020-10-13 08:25:59,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:25:59,082 INFO L479 AbstractCegarLoop]: Abstraction has 131370 states and 158248 transitions. [2020-10-13 08:25:59,082 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:25:59,082 INFO L276 IsEmpty]: Start isEmpty. Operand 131370 states and 158248 transitions. [2020-10-13 08:25:59,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 860 [2020-10-13 08:25:59,161 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:25:59,162 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:25:59,163 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 08:25:59,163 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:25:59,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:25:59,163 INFO L82 PathProgramCache]: Analyzing trace with hash 911244538, now seen corresponding path program 1 times [2020-10-13 08:25:59,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:25:59,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2076527662] [2020-10-13 08:25:59,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:25:59,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:25:59,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:00,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:00,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking...