/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_label51.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 06:40:44,509 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 06:40:44,513 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 06:40:44,555 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 06:40:44,555 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 06:40:44,563 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 06:40:44,566 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 06:40:44,570 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 06:40:44,573 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 06:40:44,576 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 06:40:44,577 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 06:40:44,578 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 06:40:44,578 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 06:40:44,581 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 06:40:44,585 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 06:40:44,587 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 06:40:44,588 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 06:40:44,589 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 06:40:44,590 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 06:40:44,599 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 06:40:44,601 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 06:40:44,602 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 06:40:44,603 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 06:40:44,604 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 06:40:44,616 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 06:40:44,616 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 06:40:44,617 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 06:40:44,618 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 06:40:44,620 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 06:40:44,621 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 06:40:44,621 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 06:40:44,622 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 06:40:44,623 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 06:40:44,625 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 06:40:44,626 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 06:40:44,626 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 06:40:44,626 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 06:40:44,627 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 06:40:44,627 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 06:40:44,628 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 06:40:44,630 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 06:40:44,630 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 06:40:44,668 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 06:40:44,668 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 06:40:44,670 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 06:40:44,670 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 06:40:44,670 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 06:40:44,671 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 06:40:44,671 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 06:40:44,671 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 06:40:44,671 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 06:40:44,671 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 06:40:44,672 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 06:40:44,673 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 06:40:44,673 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 06:40:44,673 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 06:40:44,673 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 06:40:44,674 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 06:40:44,674 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 06:40:44,674 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 06:40:44,674 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 06:40:44,674 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 06:40:44,675 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 06:40:44,675 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 06:40:44,675 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 06:40:44,675 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 06:40:44,675 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 06:40:44,676 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 06:40:44,676 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 06:40:44,676 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 06:40:44,676 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 06:40:44,676 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 06:40:45,001 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 06:40:45,014 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 06:40:45,017 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 06:40:45,019 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 06:40:45,019 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 06:40:45,020 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label51.c [2020-10-13 06:40:45,087 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/475a23153/d2f89721d24a4c3fad81a8d01d2de030/FLAG3c25cabee [2020-10-13 06:40:45,927 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 06:40:45,928 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label51.c [2020-10-13 06:40:45,959 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/475a23153/d2f89721d24a4c3fad81a8d01d2de030/FLAG3c25cabee [2020-10-13 06:40:46,382 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/475a23153/d2f89721d24a4c3fad81a8d01d2de030 [2020-10-13 06:40:46,393 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 06:40:46,395 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 06:40:46,396 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 06:40:46,396 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 06:40:46,400 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 06:40:46,401 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:40:46" (1/1) ... [2020-10-13 06:40:46,404 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b6d277a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:40:46, skipping insertion in model container [2020-10-13 06:40:46,404 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:40:46" (1/1) ... [2020-10-13 06:40:46,412 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 06:40:46,585 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 06:40:48,039 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:40:48,047 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 06:40:48,819 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:40:48,855 INFO L208 MainTranslator]: Completed translation [2020-10-13 06:40:48,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:40:48 WrapperNode [2020-10-13 06:40:48,857 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 06:40:48,857 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 06:40:48,863 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 06:40:48,863 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 06:40:48,877 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:40:48" (1/1) ... [2020-10-13 06:40:48,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:40:48" (1/1) ... [2020-10-13 06:40:48,929 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:40:48" (1/1) ... [2020-10-13 06:40:48,929 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:40:48" (1/1) ... [2020-10-13 06:40:49,026 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:40:48" (1/1) ... [2020-10-13 06:40:49,063 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:40:48" (1/1) ... [2020-10-13 06:40:49,083 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:40:48" (1/1) ... [2020-10-13 06:40:49,107 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 06:40:49,108 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 06:40:49,108 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 06:40:49,108 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 06:40:49,110 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:40:48" (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 06:40:49,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 06:40:49,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 06:40:49,174 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 06:40:49,174 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 06:40:49,175 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 06:40:49,175 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 06:40:49,175 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 06:40:49,175 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 06:40:49,175 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 06:40:49,176 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 06:40:49,176 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 06:40:49,176 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 06:40:49,176 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 06:40:49,176 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 06:40:49,176 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 06:40:49,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 06:40:49,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 06:40:53,179 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 06:40:53,180 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 06:40:53,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:40:53 BoogieIcfgContainer [2020-10-13 06:40:53,197 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 06:40:53,199 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 06:40:53,199 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 06:40:53,202 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 06:40:53,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:40:46" (1/3) ... [2020-10-13 06:40:53,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@685557d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:40:53, skipping insertion in model container [2020-10-13 06:40:53,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:40:48" (2/3) ... [2020-10-13 06:40:53,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@685557d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:40:53, skipping insertion in model container [2020-10-13 06:40:53,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:40:53" (3/3) ... [2020-10-13 06:40:53,207 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label51.c [2020-10-13 06:40:53,217 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 06:40:53,229 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 06:40:53,243 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 06:40:53,286 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 06:40:53,286 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 06:40:53,287 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 06:40:53,287 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 06:40:53,287 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 06:40:53,287 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 06:40:53,287 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 06:40:53,287 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 06:40:53,332 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states. [2020-10-13 06:40:53,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 800 [2020-10-13 06:40:53,389 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:40:53,391 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] [2020-10-13 06:40:53,392 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:40:53,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:40:53,400 INFO L82 PathProgramCache]: Analyzing trace with hash 1972266874, now seen corresponding path program 1 times [2020-10-13 06:40:53,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:40:53,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [705046239] [2020-10-13 06:40:53,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:40:54,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:40:54,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:40:57,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:40:59,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:40:59,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 813 [2020-10-13 06:40:59,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:40:59,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 06:40:59,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:40:59,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-13 06:40:59,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:40:59,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 742 [2020-10-13 06:40:59,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 06:41:00,574 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2020-10-13 06:41:00,704 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2020-10-13 06:41:00,836 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2020-10-13 06:41:00,967 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 33 [2020-10-13 06:41:01,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:41:01,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:41:01,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:41:01,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:41:01,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:41:01,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:41:01,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-13 06:41:01,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:41:01,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:41:01,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:41:01,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:41:01,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:41:05,372 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 06:41:05,373 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [705046239] [2020-10-13 06:41:05,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:41:05,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-13 06:41:05,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026421511] [2020-10-13 06:41:05,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 06:41:05,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:41:05,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 06:41:05,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2020-10-13 06:41:05,405 INFO L87 Difference]: Start difference. First operand 906 states. Second operand 18 states. [2020-10-13 06:41:05,944 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-13 06:41:08,697 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 93 [2020-10-13 06:41:10,744 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 85 [2020-10-13 06:41:11,811 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 83 [2020-10-13 06:41:20,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:41:20,272 INFO L93 Difference]: Finished difference Result 2548 states and 4905 transitions. [2020-10-13 06:41:20,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 06:41:20,275 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 799 [2020-10-13 06:41:20,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:41:20,356 INFO L225 Difference]: With dead ends: 2548 [2020-10-13 06:41:20,356 INFO L226 Difference]: Without dead ends: 1580 [2020-10-13 06:41:20,372 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=186, Invalid=870, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 06:41:20,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1580 states. [2020-10-13 06:41:20,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1580 to 1580. [2020-10-13 06:41:20,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-10-13 06:41:20,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 2339 transitions. [2020-10-13 06:41:20,583 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 2339 transitions. Word has length 799 [2020-10-13 06:41:20,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:41:20,588 INFO L479 AbstractCegarLoop]: Abstraction has 1580 states and 2339 transitions. [2020-10-13 06:41:20,588 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 06:41:20,589 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 2339 transitions. [2020-10-13 06:41:20,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 819 [2020-10-13 06:41:20,641 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:41:20,642 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] [2020-10-13 06:41:20,643 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 06:41:20,643 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:41:20,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:41:20,644 INFO L82 PathProgramCache]: Analyzing trace with hash -2116424375, now seen corresponding path program 1 times [2020-10-13 06:41:20,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:41:20,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1483157312] [2020-10-13 06:41:20,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:41:20,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:41:21,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:41:21,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:41:24,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:41:25,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:41:25,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 834 [2020-10-13 06:41:25,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:41:25,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 06:41:25,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:41:25,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-13 06:41:25,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 06:41:25,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 705 [2020-10-13 06:41:25,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:41:27,872 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 36 [2020-10-13 06:41:28,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:41:28,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:41:28,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:41:28,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:41:28,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:41:28,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:41:28,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:41:28,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:41:28,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:41:28,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:41:28,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:41:28,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:41:28,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:41:28,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:41:28,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:41:28,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:41:28,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:41:28,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:41:28,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 06:41:28,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:41:28,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:41:28,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:41:28,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 06:41:28,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:41:32,258 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 06:41:32,258 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1483157312] [2020-10-13 06:41:32,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:41:32,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 06:41:32,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225739662] [2020-10-13 06:41:32,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 06:41:32,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:41:32,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 06:41:32,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2020-10-13 06:41:32,263 INFO L87 Difference]: Start difference. First operand 1580 states and 2339 transitions. Second operand 19 states. [2020-10-13 06:41:32,517 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-10-13 06:41:32,646 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-13 06:41:46,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:41:46,264 INFO L93 Difference]: Finished difference Result 3123 states and 5328 transitions. [2020-10-13 06:41:46,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 06:41:46,270 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 818 [2020-10-13 06:41:46,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:41:46,282 INFO L225 Difference]: With dead ends: 3123 [2020-10-13 06:41:46,283 INFO L226 Difference]: Without dead ends: 2276 [2020-10-13 06:41:46,286 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=179, Invalid=813, Unknown=0, NotChecked=0, Total=992 [2020-10-13 06:41:46,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2276 states. [2020-10-13 06:41:46,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2276 to 2276. [2020-10-13 06:41:46,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2276 states. [2020-10-13 06:41:46,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2276 states to 2276 states and 3045 transitions. [2020-10-13 06:41:46,341 INFO L78 Accepts]: Start accepts. Automaton has 2276 states and 3045 transitions. Word has length 818 [2020-10-13 06:41:46,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:41:46,343 INFO L479 AbstractCegarLoop]: Abstraction has 2276 states and 3045 transitions. [2020-10-13 06:41:46,343 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 06:41:46,343 INFO L276 IsEmpty]: Start isEmpty. Operand 2276 states and 3045 transitions. [2020-10-13 06:41:46,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 826 [2020-10-13 06:41:46,354 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:41:46,355 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] [2020-10-13 06:41:46,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 06:41:46,355 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:41:46,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:41:46,356 INFO L82 PathProgramCache]: Analyzing trace with hash -911094609, now seen corresponding path program 1 times [2020-10-13 06:41:46,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:41:46,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1682066361] [2020-10-13 06:41:46,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:41:46,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:41:46,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:41:47,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:41:51,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:41:51,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 841 [2020-10-13 06:41:51,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:41:51,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5073 [2020-10-13 06:41:51,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:41:51,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 06:41:51,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 06:41:51,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 517 [2020-10-13 06:41:51,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 06:41:55,656 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 35 [2020-10-13 06:41:55,788 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 36 [2020-10-13 06:41:55,957 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 37 [2020-10-13 06:41:56,219 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 48 [2020-10-13 06:41:56,584 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 46 [2020-10-13 06:41:56,916 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 46 [2020-10-13 06:41:57,143 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 35 [2020-10-13 06:41:57,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:41:57,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:41:57,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:41:57,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:41:57,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:41:57,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:41:57,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:41:57,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:41:57,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:41:57,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:41:57,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:41:57,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:41:57,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:41:57,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:41:57,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:41:57,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:41:57,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-13 06:41:57,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:41:57,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 06:41:57,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:41:57,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:41:57,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:41:57,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 06:41:57,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:42:00,852 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 06:42:00,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1682066361] [2020-10-13 06:42:00,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:42:00,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 06:42:00,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657018509] [2020-10-13 06:42:00,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 06:42:00,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:42:00,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 06:42:00,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2020-10-13 06:42:00,859 INFO L87 Difference]: Start difference. First operand 2276 states and 3045 transitions. Second operand 17 states. [2020-10-13 06:42:05,453 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 87 [2020-10-13 06:42:06,180 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-10-13 06:42:06,436 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 93 [2020-10-13 06:42:06,745 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 90 [2020-10-13 06:42:07,182 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 89 [2020-10-13 06:42:08,312 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 89 [2020-10-13 06:42:11,480 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 91 [2020-10-13 06:42:15,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:42:15,630 INFO L93 Difference]: Finished difference Result 4329 states and 6367 transitions. [2020-10-13 06:42:15,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 06:42:15,631 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 825 [2020-10-13 06:42:15,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:42:15,645 INFO L225 Difference]: With dead ends: 4329 [2020-10-13 06:42:15,645 INFO L226 Difference]: Without dead ends: 2786 [2020-10-13 06:42:15,649 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=153, Invalid=603, Unknown=0, NotChecked=0, Total=756 [2020-10-13 06:42:15,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2786 states. [2020-10-13 06:42:15,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2786 to 2786. [2020-10-13 06:42:15,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2786 states. [2020-10-13 06:42:15,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2786 states to 2786 states and 3564 transitions. [2020-10-13 06:42:15,718 INFO L78 Accepts]: Start accepts. Automaton has 2786 states and 3564 transitions. Word has length 825 [2020-10-13 06:42:15,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:42:15,720 INFO L479 AbstractCegarLoop]: Abstraction has 2786 states and 3564 transitions. [2020-10-13 06:42:15,720 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 06:42:15,720 INFO L276 IsEmpty]: Start isEmpty. Operand 2786 states and 3564 transitions. [2020-10-13 06:42:15,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 836 [2020-10-13 06:42:15,732 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:42:15,733 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] [2020-10-13 06:42:15,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 06:42:15,733 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:42:15,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:42:15,734 INFO L82 PathProgramCache]: Analyzing trace with hash 651155990, now seen corresponding path program 1 times [2020-10-13 06:42:15,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:42:15,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [481390298] [2020-10-13 06:42:15,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:42:15,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:42:16,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:16,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:16,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:20,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:42:20,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 853 [2020-10-13 06:42:20,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:42:20,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-13 06:42:20,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:42:20,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 06:42:20,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-13 06:42:20,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 804 [2020-10-13 06:42:20,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 06:42:21,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:42:21,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:42:21,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:21,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:42:21,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:42:21,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:42:21,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:42:21,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:42:21,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:42:21,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:42:21,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:42:21,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:42:21,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:42:21,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:42:21,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:21,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:42:21,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:42:21,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:42:21,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 06:42:21,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:42:21,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:42:21,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:42:21,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:42:21,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 06:42:21,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 06:42:21,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:42:21,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:21,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:42:21,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 06:42:21,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:42:21,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 06:42:21,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:42:21,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:42:21,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:42:21,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:42:21,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:42:22,252 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 06:42:22,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [481390298] [2020-10-13 06:42:22,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:42:22,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 06:42:22,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904745741] [2020-10-13 06:42:22,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:42:22,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:42:22,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:42:22,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:42:22,257 INFO L87 Difference]: Start difference. First operand 2786 states and 3564 transitions. Second operand 5 states. [2020-10-13 06:42:31,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:42:31,069 INFO L93 Difference]: Finished difference Result 5684 states and 8005 transitions. [2020-10-13 06:42:31,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:42:31,070 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 835 [2020-10-13 06:42:31,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:42:31,087 INFO L225 Difference]: With dead ends: 5684 [2020-10-13 06:42:31,088 INFO L226 Difference]: Without dead ends: 3631 [2020-10-13 06:42:31,093 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 06:42:31,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3631 states. [2020-10-13 06:42:31,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3631 to 3631. [2020-10-13 06:42:31,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3631 states. [2020-10-13 06:42:31,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3631 states to 3631 states and 4725 transitions. [2020-10-13 06:42:31,180 INFO L78 Accepts]: Start accepts. Automaton has 3631 states and 4725 transitions. Word has length 835 [2020-10-13 06:42:31,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:42:31,181 INFO L479 AbstractCegarLoop]: Abstraction has 3631 states and 4725 transitions. [2020-10-13 06:42:31,181 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 06:42:31,182 INFO L276 IsEmpty]: Start isEmpty. Operand 3631 states and 4725 transitions. [2020-10-13 06:42:31,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 886 [2020-10-13 06:42:31,196 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:42:31,197 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:42:31,197 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 06:42:31,197 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:42:31,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:42:31,198 INFO L82 PathProgramCache]: Analyzing trace with hash -1742620805, now seen corresponding path program 1 times [2020-10-13 06:42:31,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:42:31,198 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1751546030] [2020-10-13 06:42:31,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:42:31,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:42:31,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:31,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:36,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:42:36,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 905 [2020-10-13 06:42:36,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:42:36,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-13 06:42:36,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:42:36,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:42:36,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-13 06:42:36,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-13 06:42:36,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:42:36,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:42:36,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:42:36,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:36,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:42:36,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:42:36,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:42:36,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:42:36,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:42:36,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:42:36,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:42:36,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:42:36,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:42:36,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:42:36,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:42:36,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:36,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:42:36,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:42:36,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:42:36,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 06:42:36,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:42:36,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:42:36,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:42:36,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:42:36,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:42:36,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 06:42:36,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:42:36,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:36,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:42:36,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 06:42:36,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:42:36,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 06:42:36,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:42:36,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:42:36,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:42:36,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:42:36,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:42:36,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 06:42:36,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:42:36,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:36,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:42:36,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 06:42:36,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:42:36,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-13 06:42:36,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:42:36,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:42:36,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:42:36,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 06:42:36,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:42:36,941 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 112 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-13 06:42:36,942 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1751546030] [2020-10-13 06:42:36,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:42:36,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:42:36,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695627120] [2020-10-13 06:42:36,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:42:36,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:42:36,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:42:36,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:42:36,944 INFO L87 Difference]: Start difference. First operand 3631 states and 4725 transitions. Second operand 7 states. [2020-10-13 06:42:52,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:42:52,362 INFO L93 Difference]: Finished difference Result 10042 states and 14614 transitions. [2020-10-13 06:42:52,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:42:52,363 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 885 [2020-10-13 06:42:52,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:42:52,405 INFO L225 Difference]: With dead ends: 10042 [2020-10-13 06:42:52,405 INFO L226 Difference]: Without dead ends: 7144 [2020-10-13 06:42:52,414 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 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 06:42:52,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7144 states. [2020-10-13 06:42:52,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7144 to 7125. [2020-10-13 06:42:52,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7125 states. [2020-10-13 06:42:52,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7125 states to 7125 states and 9123 transitions. [2020-10-13 06:42:52,667 INFO L78 Accepts]: Start accepts. Automaton has 7125 states and 9123 transitions. Word has length 885 [2020-10-13 06:42:52,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:42:52,668 INFO L479 AbstractCegarLoop]: Abstraction has 7125 states and 9123 transitions. [2020-10-13 06:42:52,668 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:42:52,668 INFO L276 IsEmpty]: Start isEmpty. Operand 7125 states and 9123 transitions. [2020-10-13 06:42:52,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 889 [2020-10-13 06:42:52,712 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:42:52,712 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:42:52,713 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 06:42:52,713 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:42:52,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:42:52,714 INFO L82 PathProgramCache]: Analyzing trace with hash 689601969, now seen corresponding path program 1 times [2020-10-13 06:42:52,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:42:52,715 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [557516761] [2020-10-13 06:42:52,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:42:52,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:42:52,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:52,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:53,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:55,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:57,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:42:57,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 908 [2020-10-13 06:42:57,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:42:57,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5061 [2020-10-13 06:42:57,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:42:57,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:42:57,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-13 06:42:57,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-13 06:42:57,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:42:58,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:42:58,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:42:58,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:58,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:42:58,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:42:58,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:42:58,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:42:58,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:42:58,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:42:58,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:42:58,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:42:58,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:42:58,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:42:58,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:42:58,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:58,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:42:58,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:42:58,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:42:58,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:42:58,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:42:58,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:42:58,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:42:58,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:42:58,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:42:58,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 06:42:58,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:42:58,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:58,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:42:58,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 06:42:58,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:42:58,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 06:42:58,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:42:58,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:42:58,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:42:58,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:42:58,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:42:58,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 06:42:58,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:42:58,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:42:58,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:42:58,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-13 06:42:58,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:42:58,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-13 06:42:58,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:42:58,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:42:58,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:42:58,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-13 06:42:58,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:42:58,514 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 115 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-13 06:42:58,515 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [557516761] [2020-10-13 06:42:58,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:42:58,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:42:58,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456605169] [2020-10-13 06:42:58,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:42:58,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:42:58,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:42:58,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:42:58,518 INFO L87 Difference]: Start difference. First operand 7125 states and 9123 transitions. Second operand 7 states. [2020-10-13 06:43:10,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:43:10,097 INFO L93 Difference]: Finished difference Result 19005 states and 25848 transitions. [2020-10-13 06:43:10,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:43:10,098 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 888 [2020-10-13 06:43:10,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:43:10,167 INFO L225 Difference]: With dead ends: 19005 [2020-10-13 06:43:10,168 INFO L226 Difference]: Without dead ends: 12613 [2020-10-13 06:43:10,185 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 06:43:10,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12613 states. [2020-10-13 06:43:10,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12613 to 12460. [2020-10-13 06:43:10,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12460 states. [2020-10-13 06:43:10,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12460 states to 12460 states and 15705 transitions. [2020-10-13 06:43:10,508 INFO L78 Accepts]: Start accepts. Automaton has 12460 states and 15705 transitions. Word has length 888 [2020-10-13 06:43:10,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:43:10,509 INFO L479 AbstractCegarLoop]: Abstraction has 12460 states and 15705 transitions. [2020-10-13 06:43:10,509 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:43:10,509 INFO L276 IsEmpty]: Start isEmpty. Operand 12460 states and 15705 transitions. [2020-10-13 06:43:10,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 976 [2020-10-13 06:43:10,555 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:43:10,555 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:43:10,556 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 06:43:10,556 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:43:10,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:43:10,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1711526767, now seen corresponding path program 1 times [2020-10-13 06:43:10,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:43:10,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1357074234] [2020-10-13 06:43:10,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:43:10,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:43:10,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:11,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:11,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:13,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:15,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:43:15,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 995 [2020-10-13 06:43:15,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:43:15,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5067 [2020-10-13 06:43:15,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:43:15,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:43:15,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-13 06:43:15,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-13 06:43:15,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:43:15,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:43:15,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:43:15,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:15,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:43:15,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:43:15,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:43:15,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:43:15,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:43:15,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:43:15,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:43:15,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:43:15,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:43:15,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:43:15,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:43:15,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:15,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:43:15,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:43:15,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:43:15,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:43:15,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:43:15,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:43:15,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:43:15,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:43:15,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:43:15,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 06:43:15,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:43:15,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:15,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:43:15,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 06:43:15,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:43:15,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 06:43:15,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:43:15,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:43:15,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:43:15,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:43:15,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:43:15,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 06:43:15,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:43:16,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:16,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:43:16,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-13 06:43:16,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:43:16,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-10-13 06:43:16,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:43:16,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:43:16,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:43:16,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-13 06:43:16,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:43:16,992 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 202 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-13 06:43:16,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1357074234] [2020-10-13 06:43:16,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:43:16,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:43:16,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9759720] [2020-10-13 06:43:16,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:43:16,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:43:16,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:43:16,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:43:16,995 INFO L87 Difference]: Start difference. First operand 12460 states and 15705 transitions. Second operand 7 states. [2020-10-13 06:43:36,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:43:36,294 INFO L93 Difference]: Finished difference Result 44207 states and 62833 transitions. [2020-10-13 06:43:36,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:43:36,295 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 975 [2020-10-13 06:43:36,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:43:36,432 INFO L225 Difference]: With dead ends: 44207 [2020-10-13 06:43:36,433 INFO L226 Difference]: Without dead ends: 32480 [2020-10-13 06:43:36,472 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 06:43:36,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32480 states. [2020-10-13 06:43:37,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32480 to 32333. [2020-10-13 06:43:37,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32333 states. [2020-10-13 06:43:37,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32333 states to 32333 states and 43675 transitions. [2020-10-13 06:43:37,470 INFO L78 Accepts]: Start accepts. Automaton has 32333 states and 43675 transitions. Word has length 975 [2020-10-13 06:43:37,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:43:37,471 INFO L479 AbstractCegarLoop]: Abstraction has 32333 states and 43675 transitions. [2020-10-13 06:43:37,471 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:43:37,471 INFO L276 IsEmpty]: Start isEmpty. Operand 32333 states and 43675 transitions. [2020-10-13 06:43:37,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1002 [2020-10-13 06:43:37,601 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:43:37,601 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:43:37,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 06:43:37,602 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:43:37,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:43:37,603 INFO L82 PathProgramCache]: Analyzing trace with hash -255264413, now seen corresponding path program 1 times [2020-10-13 06:43:37,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:43:37,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1644640749] [2020-10-13 06:43:37,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:43:37,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:43:37,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:38,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:38,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:42,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:42,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:43:42,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1021 [2020-10-13 06:43:42,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:43:42,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-13 06:43:42,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:43:42,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:43:42,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 156 [2020-10-13 06:43:42,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 06:43:42,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:43:42,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:43:42,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:43:42,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:42,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:43:42,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:43:42,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:43:42,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:43:42,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:43:42,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:43:42,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:43:42,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:43:42,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:43:42,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:43:42,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:43:42,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:42,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:43:42,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:43:42,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:43:42,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:43:42,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:43:42,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:43:42,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:43:42,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:43:42,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:43:42,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 06:43:43,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:43:43,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:43,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:43:43,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 06:43:43,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:43:43,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-13 06:43:43,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:43:43,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:43:43,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:43:43,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-13 06:43:43,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:43:43,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-13 06:43:43,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:43:43,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:43,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:43:43,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 06:43:43,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:43:43,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-13 06:43:43,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:43:43,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:43:43,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:43:43,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 06:43:43,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:43:43,534 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 269 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 06:43:43,534 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1644640749] [2020-10-13 06:43:43,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:43:43,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:43:43,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002481521] [2020-10-13 06:43:43,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:43:43,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:43:43,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:43:43,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:43:43,537 INFO L87 Difference]: Start difference. First operand 32333 states and 43675 transitions. Second operand 7 states. [2020-10-13 06:43:55,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:43:55,603 INFO L93 Difference]: Finished difference Result 87115 states and 120215 transitions. [2020-10-13 06:43:55,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 06:43:55,604 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1001 [2020-10-13 06:43:55,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:43:55,825 INFO L225 Difference]: With dead ends: 87115 [2020-10-13 06:43:55,825 INFO L226 Difference]: Without dead ends: 55527 [2020-10-13 06:43:55,957 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 06:43:56,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55527 states. [2020-10-13 06:43:57,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55527 to 52926. [2020-10-13 06:43:57,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52926 states. [2020-10-13 06:43:59,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52926 states to 52926 states and 67551 transitions. [2020-10-13 06:43:59,050 INFO L78 Accepts]: Start accepts. Automaton has 52926 states and 67551 transitions. Word has length 1001 [2020-10-13 06:43:59,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:43:59,051 INFO L479 AbstractCegarLoop]: Abstraction has 52926 states and 67551 transitions. [2020-10-13 06:43:59,051 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:43:59,051 INFO L276 IsEmpty]: Start isEmpty. Operand 52926 states and 67551 transitions. [2020-10-13 06:43:59,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1060 [2020-10-13 06:43:59,259 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:43:59,260 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:43:59,260 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 06:43:59,260 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:43:59,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:43:59,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1928883352, now seen corresponding path program 1 times [2020-10-13 06:43:59,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:43:59,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2143675124] [2020-10-13 06:43:59,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:43:59,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:43:59,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:59,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:59,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:43:59,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:44:04,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:44:04,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1081 [2020-10-13 06:44:04,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:44:04,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-13 06:44:04,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:44:04,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:44:04,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 156 [2020-10-13 06:44:04,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-13 06:44:04,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:44:04,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:44:04,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:44:04,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:44:04,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:44:04,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:44:04,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:44:04,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 06:44:04,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:44:04,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:44:04,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:44:04,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:44:04,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:44:04,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:44:04,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:44:04,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:44:04,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:44:04,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:44:04,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:44:04,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:44:04,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:44:04,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:44:04,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:44:04,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:44:04,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:44:04,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 06:44:04,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:44:04,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:44:04,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:44:04,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 06:44:04,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:44:04,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-13 06:44:04,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:44:04,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:44:04,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:44:04,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-13 06:44:04,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:44:04,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-13 06:44:04,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:44:04,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:44:04,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:44:04,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 06:44:04,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:44:04,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-13 06:44:04,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:44:04,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:44:04,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:44:04,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 06:44:04,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:44:04,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-10-13 06:44:04,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:44:04,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:44:04,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:44:04,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-13 06:44:04,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:44:04,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 06:44:04,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:44:04,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:44:04,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-13 06:44:04,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:44:04,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:44:05,381 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 324 proven. 49 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2020-10-13 06:44:05,382 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2143675124] [2020-10-13 06:44:05,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:44:05,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:44:05,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898505354] [2020-10-13 06:44:05,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:44:05,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:44:05,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:44:05,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:44:05,384 INFO L87 Difference]: Start difference. First operand 52926 states and 67551 transitions. Second operand 7 states. [2020-10-13 06:44:15,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:44:15,716 INFO L93 Difference]: Finished difference Result 103054 states and 132692 transitions. [2020-10-13 06:44:15,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 06:44:15,717 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1059 [2020-10-13 06:44:15,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:44:15,901 INFO L225 Difference]: With dead ends: 103054 [2020-10-13 06:44:15,901 INFO L226 Difference]: Without dead ends: 50913 [2020-10-13 06:44:16,018 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 06:44:16,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50913 states. [2020-10-13 06:44:16,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50913 to 50799. [2020-10-13 06:44:16,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50799 states. [2020-10-13 06:44:16,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50799 states to 50799 states and 61396 transitions. [2020-10-13 06:44:16,876 INFO L78 Accepts]: Start accepts. Automaton has 50799 states and 61396 transitions. Word has length 1059 [2020-10-13 06:44:16,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:44:16,876 INFO L479 AbstractCegarLoop]: Abstraction has 50799 states and 61396 transitions. [2020-10-13 06:44:16,876 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:44:16,877 INFO L276 IsEmpty]: Start isEmpty. Operand 50799 states and 61396 transitions. [2020-10-13 06:44:16,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1173 [2020-10-13 06:44:16,942 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:44:16,943 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 06:44:16,943 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 06:44:16,943 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:44:16,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:44:16,944 INFO L82 PathProgramCache]: Analyzing trace with hash -80913925, now seen corresponding path program 1 times [2020-10-13 06:44:16,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:44:16,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [94225315] [2020-10-13 06:44:16,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:44:17,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:44:17,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:44:17,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:44:17,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking...