/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/Problem04_label34.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 06:36:41,330 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 06:36:41,333 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 06:36:41,356 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 06:36:41,357 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 06:36:41,358 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 06:36:41,359 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 06:36:41,361 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 06:36:41,362 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 06:36:41,363 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 06:36:41,364 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 06:36:41,365 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 06:36:41,365 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 06:36:41,366 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 06:36:41,367 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 06:36:41,368 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 06:36:41,369 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 06:36:41,370 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 06:36:41,371 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 06:36:41,373 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 06:36:41,375 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 06:36:41,376 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 06:36:41,377 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 06:36:41,377 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 06:36:41,380 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 06:36:41,380 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 06:36:41,380 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 06:36:41,381 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 06:36:41,382 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 06:36:41,383 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 06:36:41,383 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 06:36:41,383 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 06:36:41,384 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 06:36:41,385 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 06:36:41,386 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 06:36:41,386 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 06:36:41,387 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 06:36:41,387 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 06:36:41,387 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 06:36:41,388 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 06:36:41,389 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 06:36:41,389 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 06:36:41,412 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 06:36:41,412 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 06:36:41,413 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 06:36:41,413 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 06:36:41,414 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 06:36:41,414 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 06:36:41,414 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 06:36:41,414 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 06:36:41,415 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 06:36:41,415 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 06:36:41,415 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 06:36:41,415 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 06:36:41,415 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 06:36:41,416 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 06:36:41,416 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 06:36:41,416 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 06:36:41,416 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 06:36:41,416 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 06:36:41,416 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 06:36:41,417 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 06:36:41,417 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 06:36:41,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 06:36:41,417 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 06:36:41,418 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 06:36:41,418 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 06:36:41,421 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 06:36:41,421 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 06:36:41,422 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 06:36:41,422 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 06:36:41,422 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 06:36:41,748 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 06:36:41,768 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 06:36:41,773 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 06:36:41,776 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 06:36:41,777 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 06:36:41,778 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label34.c [2020-10-13 06:36:41,852 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/87232e09f/75bc835750c745d38e312bf6c638f225/FLAG1a611494c [2020-10-13 06:36:42,608 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 06:36:42,608 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label34.c [2020-10-13 06:36:42,635 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/87232e09f/75bc835750c745d38e312bf6c638f225/FLAG1a611494c [2020-10-13 06:36:42,740 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/87232e09f/75bc835750c745d38e312bf6c638f225 [2020-10-13 06:36:42,751 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 06:36:42,753 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 06:36:42,758 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 06:36:42,758 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 06:36:42,762 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 06:36:42,764 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:36:42" (1/1) ... [2020-10-13 06:36:42,767 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@738c6f70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:36:42, skipping insertion in model container [2020-10-13 06:36:42,768 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:36:42" (1/1) ... [2020-10-13 06:36:42,777 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 06:36:42,935 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 06:36:44,322 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:36:44,329 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 06:36:44,925 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:36:44,962 INFO L208 MainTranslator]: Completed translation [2020-10-13 06:36:44,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:36:44 WrapperNode [2020-10-13 06:36:44,964 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 06:36:44,965 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 06:36:44,965 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 06:36:44,965 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 06:36:44,979 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:36:44" (1/1) ... [2020-10-13 06:36:44,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:36:44" (1/1) ... [2020-10-13 06:36:45,038 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:36:44" (1/1) ... [2020-10-13 06:36:45,039 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:36:44" (1/1) ... [2020-10-13 06:36:45,152 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:36:44" (1/1) ... [2020-10-13 06:36:45,195 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:36:44" (1/1) ... [2020-10-13 06:36:45,216 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:36:44" (1/1) ... [2020-10-13 06:36:45,243 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 06:36:45,243 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 06:36:45,243 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 06:36:45,244 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 06:36:45,245 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:36:44" (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 06:36:45,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 06:36:45,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 06:36:45,318 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 06:36:45,318 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 06:36:45,319 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 06:36:45,320 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 06:36:45,320 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 06:36:45,321 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 06:36:45,321 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 06:36:45,321 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 06:36:45,321 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 06:36:45,321 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 06:36:45,322 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 06:36:45,322 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 06:36:45,322 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 06:36:45,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 06:36:45,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 06:36:49,584 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 06:36:49,585 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 06:36:49,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:36:49 BoogieIcfgContainer [2020-10-13 06:36:49,597 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 06:36:49,599 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 06:36:49,599 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 06:36:49,603 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 06:36:49,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:36:42" (1/3) ... [2020-10-13 06:36:49,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ed5bb1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:36:49, skipping insertion in model container [2020-10-13 06:36:49,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:36:44" (2/3) ... [2020-10-13 06:36:49,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ed5bb1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:36:49, skipping insertion in model container [2020-10-13 06:36:49,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:36:49" (3/3) ... [2020-10-13 06:36:49,607 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label34.c [2020-10-13 06:36:49,619 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 06:36:49,628 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 06:36:49,642 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 06:36:49,668 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 06:36:49,669 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 06:36:49,669 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 06:36:49,669 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 06:36:49,669 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 06:36:49,669 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 06:36:49,669 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 06:36:49,670 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 06:36:49,704 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states. [2020-10-13 06:36:49,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 801 [2020-10-13 06:36:49,747 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:36:49,749 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:36:49,750 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:36:49,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:36:49,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1010735603, now seen corresponding path program 1 times [2020-10-13 06:36:49,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:36:49,767 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [683368804] [2020-10-13 06:36:49,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:36:50,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:36:50,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:36:53,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:36:55,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:36:55,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 814 [2020-10-13 06:36:55,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:36:55,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 06:36:55,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:36:55,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-13 06:36:55,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:36:55,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 742 [2020-10-13 06:36:55,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 06:36:58,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:36:58,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:36:58,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:36:58,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:36:58,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:36:58,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:36:58,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 06:36:58,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:36:58,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:36:58,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:36:58,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:36:58,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:37:02,489 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 06:37:02,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [683368804] [2020-10-13 06:37:02,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:37:02,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-13 06:37:02,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748247775] [2020-10-13 06:37:02,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 06:37:02,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:37:02,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 06:37:02,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2020-10-13 06:37:02,514 INFO L87 Difference]: Start difference. First operand 906 states. Second operand 18 states. [2020-10-13 06:37:03,751 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-13 06:37:08,382 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 81 [2020-10-13 06:37:16,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:37:16,803 INFO L93 Difference]: Finished difference Result 2548 states and 4905 transitions. [2020-10-13 06:37:16,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 06:37:16,807 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 800 [2020-10-13 06:37:16,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:37:16,884 INFO L225 Difference]: With dead ends: 2548 [2020-10-13 06:37:16,884 INFO L226 Difference]: Without dead ends: 1580 [2020-10-13 06:37:16,899 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=186, Invalid=870, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 06:37:16,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1580 states. [2020-10-13 06:37:17,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1580 to 1580. [2020-10-13 06:37:17,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-10-13 06:37:17,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 2339 transitions. [2020-10-13 06:37:17,097 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 2339 transitions. Word has length 800 [2020-10-13 06:37:17,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:37:17,101 INFO L479 AbstractCegarLoop]: Abstraction has 1580 states and 2339 transitions. [2020-10-13 06:37:17,101 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 06:37:17,102 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 2339 transitions. [2020-10-13 06:37:17,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 820 [2020-10-13 06:37:17,144 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:37:17,145 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:37:17,145 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 06:37:17,146 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:37:17,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:37:17,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1184641532, now seen corresponding path program 1 times [2020-10-13 06:37:17,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:37:17,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1618279649] [2020-10-13 06:37:17,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:37:17,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:37:17,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:18,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:20,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:22,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:37:22,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 835 [2020-10-13 06:37:22,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:37:22,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-13 06:37:22,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:37:22,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-13 06:37:22,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 06:37:22,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 705 [2020-10-13 06:37:22,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:37:25,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:37:25,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:37:25,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:25,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:37:25,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:37:25,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:37:25,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:37:25,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:37:25,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:37:25,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:37:25,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:37:25,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:37:25,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:37:25,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:37:25,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:25,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:37:25,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:37:25,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:37:25,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 06:37:25,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:37:25,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:37:25,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:37:25,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 06:37:25,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:37:29,036 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:37:29,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1618279649] [2020-10-13 06:37:29,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:37:29,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 06:37:29,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005047393] [2020-10-13 06:37:29,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 06:37:29,040 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:37:29,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 06:37:29,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2020-10-13 06:37:29,041 INFO L87 Difference]: Start difference. First operand 1580 states and 2339 transitions. Second operand 19 states. [2020-10-13 06:37:29,418 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-13 06:37:29,714 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-13 06:37:31,866 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-13 06:37:32,726 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-13 06:37:33,865 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 98 [2020-10-13 06:37:34,532 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 91 [2020-10-13 06:37:35,421 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 86 [2020-10-13 06:37:43,258 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2020-10-13 06:37:44,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:37:44,421 INFO L93 Difference]: Finished difference Result 3123 states and 5328 transitions. [2020-10-13 06:37:44,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 06:37:44,424 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 819 [2020-10-13 06:37:44,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:37:44,437 INFO L225 Difference]: With dead ends: 3123 [2020-10-13 06:37:44,438 INFO L226 Difference]: Without dead ends: 2276 [2020-10-13 06:37:44,441 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=179, Invalid=813, Unknown=0, NotChecked=0, Total=992 [2020-10-13 06:37:44,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2276 states. [2020-10-13 06:37:44,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2276 to 2276. [2020-10-13 06:37:44,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2276 states. [2020-10-13 06:37:44,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2276 states to 2276 states and 3045 transitions. [2020-10-13 06:37:44,497 INFO L78 Accepts]: Start accepts. Automaton has 2276 states and 3045 transitions. Word has length 819 [2020-10-13 06:37:44,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:37:44,498 INFO L479 AbstractCegarLoop]: Abstraction has 2276 states and 3045 transitions. [2020-10-13 06:37:44,498 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 06:37:44,498 INFO L276 IsEmpty]: Start isEmpty. Operand 2276 states and 3045 transitions. [2020-10-13 06:37:44,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 827 [2020-10-13 06:37:44,526 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:37:44,527 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:37:44,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 06:37:44,528 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:37:44,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:37:44,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1820842846, now seen corresponding path program 1 times [2020-10-13 06:37:44,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:37:44,529 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1097637716] [2020-10-13 06:37:44,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:37:44,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:37:44,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:45,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:47,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:49,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:37:49,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 842 [2020-10-13 06:37:49,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:37:49,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-13 06:37:49,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:37:49,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 06:37:49,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 06:37:49,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 517 [2020-10-13 06:37:49,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:37:51,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:37:51,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:37:51,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:51,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:37:51,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:37:51,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:37:51,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:37:51,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:37:51,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:37:51,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:37:51,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:37:51,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:37:51,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:37:51,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:37:51,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:51,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:37:51,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-13 06:37:51,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:37:51,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 06:37:51,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:37:51,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:37:51,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:37:51,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 06:37:51,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:37:54,740 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 06:37:54,741 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1097637716] [2020-10-13 06:37:54,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:37:54,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 06:37:54,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934709142] [2020-10-13 06:37:54,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 06:37:54,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:37:54,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 06:37:54,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2020-10-13 06:37:54,747 INFO L87 Difference]: Start difference. First operand 2276 states and 3045 transitions. Second operand 17 states. [2020-10-13 06:37:55,380 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-13 06:38:00,341 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 94 [2020-10-13 06:38:01,236 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 85 [2020-10-13 06:38:01,462 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 92 [2020-10-13 06:38:01,719 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 91 [2020-10-13 06:38:02,152 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 90 [2020-10-13 06:38:03,431 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 89 [2020-10-13 06:38:07,353 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 87 [2020-10-13 06:38:07,806 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2020-10-13 06:38:07,977 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2020-10-13 06:38:13,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:38:13,396 INFO L93 Difference]: Finished difference Result 4329 states and 6367 transitions. [2020-10-13 06:38:13,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 06:38:13,403 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 826 [2020-10-13 06:38:13,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:38:13,417 INFO L225 Difference]: With dead ends: 4329 [2020-10-13 06:38:13,417 INFO L226 Difference]: Without dead ends: 2786 [2020-10-13 06:38:13,423 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=155, Invalid=657, Unknown=0, NotChecked=0, Total=812 [2020-10-13 06:38:13,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2786 states. [2020-10-13 06:38:13,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2786 to 2786. [2020-10-13 06:38:13,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2786 states. [2020-10-13 06:38:13,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2786 states to 2786 states and 3564 transitions. [2020-10-13 06:38:13,538 INFO L78 Accepts]: Start accepts. Automaton has 2786 states and 3564 transitions. Word has length 826 [2020-10-13 06:38:13,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:38:13,539 INFO L479 AbstractCegarLoop]: Abstraction has 2786 states and 3564 transitions. [2020-10-13 06:38:13,539 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 06:38:13,540 INFO L276 IsEmpty]: Start isEmpty. Operand 2786 states and 3564 transitions. [2020-10-13 06:38:13,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 837 [2020-10-13 06:38:13,554 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:38:13,555 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:38:13,555 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 06:38:13,556 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:38:13,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:38:13,556 INFO L82 PathProgramCache]: Analyzing trace with hash -1288996137, now seen corresponding path program 1 times [2020-10-13 06:38:13,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:38:13,557 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [788127998] [2020-10-13 06:38:13,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:38:13,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:38:13,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:14,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:15,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:17,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:18,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:38:18,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 854 [2020-10-13 06:38:18,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:38:18,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 06:38:18,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:38:18,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 06:38:18,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-13 06:38:18,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 786 [2020-10-13 06:38:18,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:38:19,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:38:19,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:38:19,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:19,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:38:19,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:38:19,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:38:19,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:38:19,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:38:19,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:38:19,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:38:19,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:38:19,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:38:19,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:38:19,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:38:19,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:19,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:38:19,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:38:19,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:38:19,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:38:19,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:38:19,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:38:19,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:38:19,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:38:19,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:38:19,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 06:38:19,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:38:19,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:19,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:38:19,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 06:38:19,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:38:19,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 06:38:19,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:38:19,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:38:19,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:38:19,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:38:19,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:38:22,281 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 31 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-13 06:38:22,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [788127998] [2020-10-13 06:38:22,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:38:22,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 06:38:22,282 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788133882] [2020-10-13 06:38:22,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:38:22,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:38:22,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:38:22,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:38:22,286 INFO L87 Difference]: Start difference. First operand 2786 states and 3564 transitions. Second operand 5 states. [2020-10-13 06:38:31,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:38:31,861 INFO L93 Difference]: Finished difference Result 5625 states and 7934 transitions. [2020-10-13 06:38:31,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:38:31,866 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 836 [2020-10-13 06:38:31,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:38:31,880 INFO L225 Difference]: With dead ends: 5625 [2020-10-13 06:38:31,880 INFO L226 Difference]: Without dead ends: 2715 [2020-10-13 06:38:31,886 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 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 06:38:31,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2715 states. [2020-10-13 06:38:31,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2715 to 2715. [2020-10-13 06:38:31,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2715 states. [2020-10-13 06:38:31,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2715 states to 2715 states and 2983 transitions. [2020-10-13 06:38:31,947 INFO L78 Accepts]: Start accepts. Automaton has 2715 states and 2983 transitions. Word has length 836 [2020-10-13 06:38:31,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:38:31,948 INFO L479 AbstractCegarLoop]: Abstraction has 2715 states and 2983 transitions. [2020-10-13 06:38:31,948 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 06:38:31,948 INFO L276 IsEmpty]: Start isEmpty. Operand 2715 states and 2983 transitions. [2020-10-13 06:38:31,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 945 [2020-10-13 06:38:31,961 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:38:31,962 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:38:31,962 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 06:38:31,963 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:38:31,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:38:31,963 INFO L82 PathProgramCache]: Analyzing trace with hash -552757505, now seen corresponding path program 1 times [2020-10-13 06:38:31,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:38:31,964 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1118280652] [2020-10-13 06:38:31,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:38:32,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:38:32,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:32,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:33,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:37,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:38:37,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 962 [2020-10-13 06:38:37,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:38:37,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 06:38:37,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:38:37,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 06:38:37,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 156 [2020-10-13 06:38:37,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 805 [2020-10-13 06:38:37,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 06:38:37,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:38:37,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:38:37,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:37,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:38:37,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:38:37,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:38:37,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 06:38:37,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:38:37,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:38:37,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:38:37,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:38:37,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:38:37,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:38:37,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:38:37,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:37,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:38:37,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:38:37,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:38:37,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 06:38:37,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:38:37,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:38:37,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:38:37,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:38:37,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:38:37,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 06:38:37,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:38:37,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:37,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:38:37,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 06:38:37,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:38:37,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-13 06:38:37,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:38:37,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:38:37,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:38:37,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-13 06:38:37,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:38:38,201 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 139 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-13 06:38:38,201 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1118280652] [2020-10-13 06:38:38,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:38:38,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 06:38:38,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103074045] [2020-10-13 06:38:38,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:38:38,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:38:38,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:38:38,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:38:38,204 INFO L87 Difference]: Start difference. First operand 2715 states and 2983 transitions. Second operand 5 states. [2020-10-13 06:38:44,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:38:44,286 INFO L93 Difference]: Finished difference Result 5542 states and 6342 transitions. [2020-10-13 06:38:44,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:38:44,287 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 944 [2020-10-13 06:38:44,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:38:44,304 INFO L225 Difference]: With dead ends: 5542 [2020-10-13 06:38:44,304 INFO L226 Difference]: Without dead ends: 3560 [2020-10-13 06:38:44,309 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 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 06:38:44,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3560 states. [2020-10-13 06:38:44,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3560 to 3560. [2020-10-13 06:38:44,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3560 states. [2020-10-13 06:38:44,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3560 states to 3560 states and 3937 transitions. [2020-10-13 06:38:44,385 INFO L78 Accepts]: Start accepts. Automaton has 3560 states and 3937 transitions. Word has length 944 [2020-10-13 06:38:44,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:38:44,386 INFO L479 AbstractCegarLoop]: Abstraction has 3560 states and 3937 transitions. [2020-10-13 06:38:44,386 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 06:38:44,387 INFO L276 IsEmpty]: Start isEmpty. Operand 3560 states and 3937 transitions. [2020-10-13 06:38:44,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 995 [2020-10-13 06:38:44,403 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:38:44,404 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:38:44,404 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 06:38:44,404 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:38:44,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:38:44,405 INFO L82 PathProgramCache]: Analyzing trace with hash -529200070, now seen corresponding path program 1 times [2020-10-13 06:38:44,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:38:44,405 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [58225433] [2020-10-13 06:38:44,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:38:44,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:38:44,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:44,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:45,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:49,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:38:49,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1014 [2020-10-13 06:38:49,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:38:49,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-13 06:38:49,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:38:49,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:38:49,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 156 [2020-10-13 06:38:49,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-13 06:38:49,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:38:49,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:38:49,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:38:49,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:49,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:38:49,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:38:49,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:38:49,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:38:49,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:38:49,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:38:49,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:38:49,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:38:49,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:38:49,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:38:49,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:38:49,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:49,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:38:49,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:38:49,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:38:49,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:38:49,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:38:49,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:38:49,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:38:49,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:38:49,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:38:49,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 06:38:49,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:38:49,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:49,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:38:49,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 06:38:49,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:38:49,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-13 06:38:49,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:38:49,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:38:49,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:38:49,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-13 06:38:49,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:38:50,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-13 06:38:50,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:38:50,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:50,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:38:50,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 06:38:50,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:38:50,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-13 06:38:50,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:38:50,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:38:50,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:38:50,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 06:38:50,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:38:50,639 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 253 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 06:38:50,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [58225433] [2020-10-13 06:38:50,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:38:50,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:38:50,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339778914] [2020-10-13 06:38:50,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:38:50,641 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:38:50,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:38:50,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:38:50,642 INFO L87 Difference]: Start difference. First operand 3560 states and 3937 transitions. Second operand 7 states. [2020-10-13 06:38:57,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:38:57,890 INFO L93 Difference]: Finished difference Result 8164 states and 9374 transitions. [2020-10-13 06:38:57,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 06:38:57,894 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 994 [2020-10-13 06:38:57,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:38:57,919 INFO L225 Difference]: With dead ends: 8164 [2020-10-13 06:38:57,919 INFO L226 Difference]: Without dead ends: 5337 [2020-10-13 06:38:57,927 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:38:57,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5337 states. [2020-10-13 06:38:58,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5337 to 5313. [2020-10-13 06:38:58,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5313 states. [2020-10-13 06:38:58,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5313 states to 5313 states and 5962 transitions. [2020-10-13 06:38:58,081 INFO L78 Accepts]: Start accepts. Automaton has 5313 states and 5962 transitions. Word has length 994 [2020-10-13 06:38:58,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:38:58,082 INFO L479 AbstractCegarLoop]: Abstraction has 5313 states and 5962 transitions. [2020-10-13 06:38:58,082 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:38:58,082 INFO L276 IsEmpty]: Start isEmpty. Operand 5313 states and 5962 transitions. [2020-10-13 06:38:58,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 998 [2020-10-13 06:38:58,110 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:38:58,111 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:38:58,111 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 06:38:58,111 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:38:58,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:38:58,112 INFO L82 PathProgramCache]: Analyzing trace with hash -1917290636, now seen corresponding path program 1 times [2020-10-13 06:38:58,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:38:58,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [267226373] [2020-10-13 06:38:58,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:38:58,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:38:58,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:58,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:58,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:59,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:03,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:03,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1017 [2020-10-13 06:39:03,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:39:03,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5099 [2020-10-13 06:39:03,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:03,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:39:03,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 156 [2020-10-13 06:39:03,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-13 06:39:03,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:39:03,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:39:03,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:03,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:03,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:03,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:39:03,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:39:03,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:39:03,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:03,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:39:03,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:39:03,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:39:03,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:39:03,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:39:03,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:03,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:03,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:03,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:39:03,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:39:03,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 06:39:03,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:03,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:39:03,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:39:03,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:39:03,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:39:03,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 06:39:03,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:03,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:03,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:03,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 06:39:03,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:39:03,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-13 06:39:03,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:03,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:39:03,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:39:03,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-13 06:39:03,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:39:03,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-13 06:39:03,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:03,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:03,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:03,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-13 06:39:03,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:39:03,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-13 06:39:03,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:03,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:39:03,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:39:03,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-13 06:39:03,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:39:04,481 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 259 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 06:39:04,482 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [267226373] [2020-10-13 06:39:04,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:39:04,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:39:04,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776124047] [2020-10-13 06:39:04,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:39:04,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:39:04,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:39:04,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:39:04,484 INFO L87 Difference]: Start difference. First operand 5313 states and 5962 transitions. Second operand 7 states. [2020-10-13 06:39:11,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:39:11,530 INFO L93 Difference]: Finished difference Result 11649 states and 13298 transitions. [2020-10-13 06:39:11,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 06:39:11,535 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 997 [2020-10-13 06:39:11,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:39:11,565 INFO L225 Difference]: With dead ends: 11649 [2020-10-13 06:39:11,565 INFO L226 Difference]: Without dead ends: 7069 [2020-10-13 06:39:11,576 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 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 06:39:11,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7069 states. [2020-10-13 06:39:11,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7069 to 7047. [2020-10-13 06:39:11,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7047 states. [2020-10-13 06:39:11,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7047 states to 7047 states and 7832 transitions. [2020-10-13 06:39:11,713 INFO L78 Accepts]: Start accepts. Automaton has 7047 states and 7832 transitions. Word has length 997 [2020-10-13 06:39:11,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:39:11,714 INFO L479 AbstractCegarLoop]: Abstraction has 7047 states and 7832 transitions. [2020-10-13 06:39:11,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:39:11,714 INFO L276 IsEmpty]: Start isEmpty. Operand 7047 states and 7832 transitions. [2020-10-13 06:39:11,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1073 [2020-10-13 06:39:11,739 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:39:11,740 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:39:11,741 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 06:39:11,741 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:39:11,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:39:11,741 INFO L82 PathProgramCache]: Analyzing trace with hash 1768164323, now seen corresponding path program 1 times [2020-10-13 06:39:11,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:39:11,742 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1877323815] [2020-10-13 06:39:11,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:39:11,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:11,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:12,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:12,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:13,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:16,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:16,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:16,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1094 [2020-10-13 06:39:16,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 06:39:16,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-13 06:39:16,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:16,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:39:16,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-13 06:39:16,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 06:39:16,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:39:17,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:39:17,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:17,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:17,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:17,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:39:17,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:39:17,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:39:17,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:17,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:39:17,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:39:17,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:39:17,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:39:17,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:39:17,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:17,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:17,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:17,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:39:17,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:39:17,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:39:17,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:17,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:39:17,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:39:17,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:39:17,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:39:17,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 06:39:17,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:17,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:17,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:17,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 06:39:17,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:39:17,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 06:39:17,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:17,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:39:17,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:39:17,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:39:17,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:39:17,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-13 06:39:17,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:17,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:17,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:17,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 06:39:17,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:39:17,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-13 06:39:17,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:17,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:39:17,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:39:17,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-13 06:39:17,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:39:17,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2020-10-13 06:39:17,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:17,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:17,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:17,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 06:39:17,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:39:17,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 06:39:17,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:17,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:39:17,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:39:17,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:39:17,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:39:17,667 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 306 proven. 2 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2020-10-13 06:39:17,668 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1877323815] [2020-10-13 06:39:17,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:39:17,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 06:39:17,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821194966] [2020-10-13 06:39:17,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 06:39:17,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:39:17,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 06:39:17,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 06:39:17,670 INFO L87 Difference]: Start difference. First operand 7047 states and 7832 transitions. Second operand 8 states. [2020-10-13 06:39:24,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:39:24,708 INFO L93 Difference]: Finished difference Result 16162 states and 18588 transitions. [2020-10-13 06:39:24,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 06:39:24,709 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1072 [2020-10-13 06:39:24,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:39:24,744 INFO L225 Difference]: With dead ends: 16162 [2020-10-13 06:39:24,744 INFO L226 Difference]: Without dead ends: 9848 [2020-10-13 06:39:24,757 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-13 06:39:24,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9848 states. [2020-10-13 06:39:24,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9848 to 9802. [2020-10-13 06:39:24,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9802 states. [2020-10-13 06:39:24,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9802 states to 9802 states and 11208 transitions. [2020-10-13 06:39:24,929 INFO L78 Accepts]: Start accepts. Automaton has 9802 states and 11208 transitions. Word has length 1072 [2020-10-13 06:39:24,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:39:24,930 INFO L479 AbstractCegarLoop]: Abstraction has 9802 states and 11208 transitions. [2020-10-13 06:39:24,930 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 06:39:24,931 INFO L276 IsEmpty]: Start isEmpty. Operand 9802 states and 11208 transitions. [2020-10-13 06:39:24,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1079 [2020-10-13 06:39:24,965 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:39:24,966 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:39:24,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 06:39:24,966 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:39:24,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:39:24,967 INFO L82 PathProgramCache]: Analyzing trace with hash -2017191849, now seen corresponding path program 1 times [2020-10-13 06:39:24,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:39:24,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [158616603] [2020-10-13 06:39:24,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:39:25,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:25,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:25,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:27,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:27,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:28,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:30,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:30,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:30,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1100 [2020-10-13 06:39:30,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 06:39:30,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5207 [2020-10-13 06:39:30,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:30,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:39:30,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-13 06:39:30,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 06:39:30,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:39:30,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:39:30,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:30,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:30,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:30,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:39:30,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:39:30,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:39:30,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:30,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:39:30,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:39:30,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:39:30,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:39:30,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:39:30,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:30,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:30,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:30,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:39:30,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:39:30,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:39:30,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:30,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:39:30,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:39:30,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:39:30,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:39:30,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 06:39:30,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:30,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:30,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:30,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 06:39:30,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:39:30,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-13 06:39:30,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:30,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:39:30,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:39:30,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:39:30,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:39:30,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-13 06:39:30,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:30,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:30,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:30,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 06:39:30,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:39:30,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-13 06:39:30,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:30,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:39:30,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:39:30,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-13 06:39:30,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:39:30,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2020-10-13 06:39:30,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:30,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:30,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:30,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:39:30,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:39:30,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 06:39:30,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:30,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:39:30,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:39:30,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 06:39:30,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:39:31,396 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 328 proven. 2 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2020-10-13 06:39:31,397 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [158616603] [2020-10-13 06:39:31,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:39:31,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 06:39:31,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737398763] [2020-10-13 06:39:31,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 06:39:31,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:39:31,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 06:39:31,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 06:39:31,399 INFO L87 Difference]: Start difference. First operand 9802 states and 11208 transitions. Second operand 8 states. [2020-10-13 06:39:41,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:39:41,719 INFO L93 Difference]: Finished difference Result 34332 states and 41698 transitions. [2020-10-13 06:39:41,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 06:39:41,720 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1078 [2020-10-13 06:39:41,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:39:41,818 INFO L225 Difference]: With dead ends: 34332 [2020-10-13 06:39:41,819 INFO L226 Difference]: Without dead ends: 25263 [2020-10-13 06:39:41,846 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-13 06:39:41,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25263 states. [2020-10-13 06:39:42,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25263 to 25200. [2020-10-13 06:39:42,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25200 states. [2020-10-13 06:39:42,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25200 states to 25200 states and 29250 transitions. [2020-10-13 06:39:42,470 INFO L78 Accepts]: Start accepts. Automaton has 25200 states and 29250 transitions. Word has length 1078 [2020-10-13 06:39:42,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:39:42,470 INFO L479 AbstractCegarLoop]: Abstraction has 25200 states and 29250 transitions. [2020-10-13 06:39:42,471 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 06:39:42,471 INFO L276 IsEmpty]: Start isEmpty. Operand 25200 states and 29250 transitions. [2020-10-13 06:39:42,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1151 [2020-10-13 06:39:42,550 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:39:42,553 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:39:42,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 06:39:42,553 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:39:42,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:39:42,554 INFO L82 PathProgramCache]: Analyzing trace with hash 1409323894, now seen corresponding path program 1 times [2020-10-13 06:39:42,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:39:42,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1157136098] [2020-10-13 06:39:42,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:39:42,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:42,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:43,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:43,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:45,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:46,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:46,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:47,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:47,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:47,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1174 [2020-10-13 06:39:47,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 06:39:47,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5069 [2020-10-13 06:39:47,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:47,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:39:47,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 275 [2020-10-13 06:39:47,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 06:39:47,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:39:47,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:39:47,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:47,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:47,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:47,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:39:47,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:39:47,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 06:39:47,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:47,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:39:47,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:39:47,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:39:47,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:39:47,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:39:47,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:47,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:47,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:47,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:39:47,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:39:47,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:39:47,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:47,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:39:47,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:39:47,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:39:47,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:39:47,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 06:39:47,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:47,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:48,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:48,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 06:39:48,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:39:48,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 06:39:48,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:48,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:39:48,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:39:48,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:39:48,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:39:48,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-13 06:39:48,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:48,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:48,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:48,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-13 06:39:48,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:39:48,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-13 06:39:48,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:48,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:39:48,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:39:48,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-13 06:39:48,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:39:48,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2020-10-13 06:39:48,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:48,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:48,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:48,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 06:39:48,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:39:48,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 06:39:48,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:48,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:39:48,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:39:48,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 06:39:48,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:39:48,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2020-10-13 06:39:48,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:48,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:48,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:48,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 06:39:48,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:39:48,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 06:39:48,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:48,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:39:48,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-13 06:39:48,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:39:48,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:39:48,659 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 429 proven. 30 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2020-10-13 06:39:48,660 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1157136098] [2020-10-13 06:39:48,660 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:39:48,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:39:48,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299319111] [2020-10-13 06:39:48,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:39:48,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:39:48,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:39:48,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:39:48,662 INFO L87 Difference]: Start difference. First operand 25200 states and 29250 transitions. Second operand 7 states. [2020-10-13 06:39:56,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:39:56,459 INFO L93 Difference]: Finished difference Result 49784 states and 58199 transitions. [2020-10-13 06:39:56,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:39:56,460 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1150 [2020-10-13 06:39:56,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:39:56,530 INFO L225 Difference]: With dead ends: 49784 [2020-10-13 06:39:56,530 INFO L226 Difference]: Without dead ends: 25317 [2020-10-13 06:39:56,578 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:39:56,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25317 states. [2020-10-13 06:39:56,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25317 to 25260. [2020-10-13 06:39:56,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25260 states. [2020-10-13 06:39:56,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25260 states to 25260 states and 28113 transitions. [2020-10-13 06:39:56,969 INFO L78 Accepts]: Start accepts. Automaton has 25260 states and 28113 transitions. Word has length 1150 [2020-10-13 06:39:56,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:39:56,970 INFO L479 AbstractCegarLoop]: Abstraction has 25260 states and 28113 transitions. [2020-10-13 06:39:56,970 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:39:56,970 INFO L276 IsEmpty]: Start isEmpty. Operand 25260 states and 28113 transitions. [2020-10-13 06:39:57,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1216 [2020-10-13 06:39:57,025 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:39:57,026 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:39:57,026 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 06:39:57,027 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:39:57,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:39:57,027 INFO L82 PathProgramCache]: Analyzing trace with hash 388565919, now seen corresponding path program 1 times [2020-10-13 06:39:57,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:39:57,028 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1086118889] [2020-10-13 06:39:57,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:39:57,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:57,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:57,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:57,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:57,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:40:02,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:40:02,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1239 [2020-10-13 06:40:02,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:40:02,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-13 06:40:02,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:40:02,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:40:02,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-13 06:40:02,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 06:40:02,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:40:02,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:40:02,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:40:02,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:40:02,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:40:02,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:40:02,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:40:02,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 06:40:02,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:40:02,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:40:02,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:40:02,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:40:02,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:40:02,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:40:02,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:40:02,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:40:02,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:40:02,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-13 06:40:02,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:40:02,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:40:02,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:40:02,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:40:02,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:40:02,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:40:02,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:40:02,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 06:40:02,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:40:02,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:40:02,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:40:02,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 237 [2020-10-13 06:40:02,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:40:02,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-13 06:40:02,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:40:02,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:40:02,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:40:02,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 228 [2020-10-13 06:40:02,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:40:02,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 06:40:02,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:40:02,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:40:02,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:40:02,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 06:40:02,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:40:02,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:40:02,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:40:02,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:40:02,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:40:02,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 06:40:02,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:40:02,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-10-13 06:40:02,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:40:02,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:40:02,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:40:02,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 06:40:02,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:40:02,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 06:40:02,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:40:02,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:40:02,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:40:02,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:40:02,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:40:02,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2020-10-13 06:40:02,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:40:02,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:40:02,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:40:02,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-13 06:40:02,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:40:02,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 06:40:02,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:40:02,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:40:02,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 138 [2020-10-13 06:40:02,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:40:02,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:40:03,372 INFO L134 CoverageAnalysis]: Checked inductivity of 637 backedges. 437 proven. 14 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2020-10-13 06:40:03,373 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1086118889] [2020-10-13 06:40:03,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:40:03,373 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:40:03,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982197283] [2020-10-13 06:40:03,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:40:03,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:40:03,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:40:03,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:40:03,375 INFO L87 Difference]: Start difference. First operand 25260 states and 28113 transitions. Second operand 7 states. [2020-10-13 06:40:10,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:40:10,608 INFO L93 Difference]: Finished difference Result 70808 states and 79948 transitions. [2020-10-13 06:40:10,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 06:40:10,610 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1215 [2020-10-13 06:40:10,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:40:10,708 INFO L225 Difference]: With dead ends: 70808 [2020-10-13 06:40:10,708 INFO L226 Difference]: Without dead ends: 46281 [2020-10-13 06:40:10,750 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 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 06:40:10,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46281 states. [2020-10-13 06:40:11,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46281 to 40349. [2020-10-13 06:40:11,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40349 states. [2020-10-13 06:40:11,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40349 states to 40349 states and 43864 transitions. [2020-10-13 06:40:11,339 INFO L78 Accepts]: Start accepts. Automaton has 40349 states and 43864 transitions. Word has length 1215 [2020-10-13 06:40:11,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:40:11,340 INFO L479 AbstractCegarLoop]: Abstraction has 40349 states and 43864 transitions. [2020-10-13 06:40:11,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:40:11,340 INFO L276 IsEmpty]: Start isEmpty. Operand 40349 states and 43864 transitions. [2020-10-13 06:40:11,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1248 [2020-10-13 06:40:11,380 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:40:11,381 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:40:11,381 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 06:40:11,381 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:40:11,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:40:11,381 INFO L82 PathProgramCache]: Analyzing trace with hash 770478142, now seen corresponding path program 1 times [2020-10-13 06:40:11,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:40:11,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [700024483] [2020-10-13 06:40:11,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:40:11,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:40:11,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:40:11,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:40:13,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:40:16,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:40:16,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1271 [2020-10-13 06:40:16,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:40:16,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5077 [2020-10-13 06:40:16,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:40:16,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:40:16,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-13 06:40:16,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-13 06:40:16,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:40:16,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:40:16,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:40:16,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:40:16,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:40:16,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:40:16,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:40:16,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 06:40:16,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:40:16,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:40:16,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:40:16,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:40:16,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:40:16,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:40:16,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:40:16,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:40:16,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:40:16,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:40:16,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:40:16,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:40:16,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:40:16,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:40:16,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:40:16,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:40:16,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:40:16,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 06:40:16,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:40:16,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:40:16,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:40:16,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 06:40:16,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:40:16,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 06:40:16,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:40:16,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:40:16,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:40:16,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:40:16,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:40:16,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-13 06:40:16,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:40:16,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:40:16,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:40:16,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 06:40:16,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:40:16,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-13 06:40:16,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:40:16,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:40:16,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:40:16,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-13 06:40:16,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:40:16,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2020-10-13 06:40:16,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:40:16,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:40:17,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:40:17,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 06:40:17,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:40:17,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-13 06:40:17,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:40:17,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:40:17,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:40:17,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 06:40:17,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:40:17,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-13 06:40:17,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:40:17,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:40:17,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:40:17,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-13 06:40:17,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:40:17,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 06:40:17,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:40:17,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:40:17,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 138 [2020-10-13 06:40:17,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:40:17,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:40:17,833 INFO L134 CoverageAnalysis]: Checked inductivity of 1009 backedges. 564 proven. 49 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2020-10-13 06:40:17,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [700024483] [2020-10-13 06:40:17,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:40:17,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:40:17,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536742293] [2020-10-13 06:40:17,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:40:17,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:40:17,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:40:17,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:40:17,836 INFO L87 Difference]: Start difference. First operand 40349 states and 43864 transitions. Second operand 7 states.