/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 --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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label36.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:32:35,680 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:32:35,683 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:32:35,709 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:32:35,709 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:32:35,711 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:32:35,712 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:32:35,714 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:32:35,716 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:32:35,717 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:32:35,718 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:32:35,719 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:32:35,719 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:32:35,720 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:32:35,722 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:32:35,723 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:32:35,724 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:32:35,725 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:32:35,727 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:32:35,729 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:32:35,730 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:32:35,731 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:32:35,732 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:32:35,733 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:32:35,736 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:32:35,736 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:32:35,737 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:32:35,738 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:32:35,738 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:32:35,739 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:32:35,739 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:32:35,742 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:32:35,743 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:32:35,744 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:32:35,746 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:32:35,746 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:32:35,747 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:32:35,747 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:32:35,748 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:32:35,750 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:32:35,750 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:32:35,756 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-21 12:32:35,805 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:32:35,806 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:32:35,807 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:32:35,807 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:32:35,808 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:32:35,808 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:32:35,808 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:32:35,808 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:32:35,809 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:32:35,809 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:32:35,810 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:32:35,810 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:32:35,810 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:32:35,811 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:32:35,811 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:32:35,811 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:32:35,811 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:32:35,811 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:32:35,812 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:32:35,812 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:32:35,812 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:32:35,812 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:32:35,813 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:32:35,813 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:32:35,813 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:32:35,813 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:32:35,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:32:35,814 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:32:35,814 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:32:35,814 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.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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-21 12:32:36,273 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:32:36,290 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:32:36,294 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:32:36,295 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:32:36,295 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:32:36,296 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label36.c [2020-09-21 12:32:36,378 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c2ec4c8a5/37d34ab974874579a1b678cdfa5a9b68/FLAG746dd74c3 [2020-09-21 12:32:37,040 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:32:37,041 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label36.c [2020-09-21 12:32:37,056 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c2ec4c8a5/37d34ab974874579a1b678cdfa5a9b68/FLAG746dd74c3 [2020-09-21 12:32:37,239 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c2ec4c8a5/37d34ab974874579a1b678cdfa5a9b68 [2020-09-21 12:32:37,254 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:32:37,263 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:32:37,266 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:32:37,266 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:32:37,270 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:32:37,271 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:32:37" (1/1) ... [2020-09-21 12:32:37,276 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20fc4f96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:37, skipping insertion in model container [2020-09-21 12:32:37,276 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:32:37" (1/1) ... [2020-09-21 12:32:37,286 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:32:37,356 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:32:37,978 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:32:37,984 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:32:38,100 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:32:38,131 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:32:38,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:38 WrapperNode [2020-09-21 12:32:38,132 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:32:38,133 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:32:38,133 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:32:38,133 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:32:38,152 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:38" (1/1) ... [2020-09-21 12:32:38,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:38" (1/1) ... [2020-09-21 12:32:38,175 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:38" (1/1) ... [2020-09-21 12:32:38,175 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:38" (1/1) ... [2020-09-21 12:32:38,223 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:38" (1/1) ... [2020-09-21 12:32:38,249 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:38" (1/1) ... [2020-09-21 12:32:38,260 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:38" (1/1) ... [2020-09-21 12:32:38,269 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:32:38,270 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:32:38,270 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:32:38,270 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:32:38,271 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:38" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:32:38,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:32:38,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:32:38,361 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-21 12:32:38,361 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:32:38,361 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-21 12:32:38,361 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:32:38,362 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 12:32:38,362 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-21 12:32:38,363 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:32:38,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:32:38,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:32:39,867 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:32:39,867 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-21 12:32:39,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:32:39 BoogieIcfgContainer [2020-09-21 12:32:39,875 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:32:39,876 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:32:39,876 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:32:39,880 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:32:39,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:32:37" (1/3) ... [2020-09-21 12:32:39,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f517884 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:32:39, skipping insertion in model container [2020-09-21 12:32:39,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:38" (2/3) ... [2020-09-21 12:32:39,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f517884 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:32:39, skipping insertion in model container [2020-09-21 12:32:39,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:32:39" (3/3) ... [2020-09-21 12:32:39,885 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label36.c [2020-09-21 12:32:39,896 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:32:39,907 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:32:39,929 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:32:39,961 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:32:39,962 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:32:39,962 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:32:39,962 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:32:39,962 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:32:39,962 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:32:39,962 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:32:39,963 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:32:39,991 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states. [2020-09-21 12:32:40,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-21 12:32:40,001 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:40,003 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] [2020-09-21 12:32:40,003 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:40,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:40,012 INFO L82 PathProgramCache]: Analyzing trace with hash 406410443, now seen corresponding path program 1 times [2020-09-21 12:32:40,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:40,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [946015722] [2020-09-21 12:32:40,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:40,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:40,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:40,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:40,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-21 12:32:40,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:40,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 535 [2020-09-21 12:32:40,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:40,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:32:40,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:32:40,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-21 12:32:40,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-21 12:32:40,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:40,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:40,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:40,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:40,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:40,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:40,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 12:32:40,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:40,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:40,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:40,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:32:40,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:32:40,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:32:40,989 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [946015722] [2020-09-21 12:32:40,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:32:40,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:32:41,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084636186] [2020-09-21 12:32:41,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:32:41,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:41,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:32:41,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:32:41,048 INFO L87 Difference]: Start difference. First operand 254 states. Second operand 4 states. [2020-09-21 12:32:42,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:42,779 INFO L93 Difference]: Finished difference Result 698 states and 1240 transitions. [2020-09-21 12:32:42,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:32:42,782 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-09-21 12:32:42,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:42,802 INFO L225 Difference]: With dead ends: 698 [2020-09-21 12:32:42,802 INFO L226 Difference]: Without dead ends: 380 [2020-09-21 12:32:42,813 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:32:42,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2020-09-21 12:32:42,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 376. [2020-09-21 12:32:42,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2020-09-21 12:32:42,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 552 transitions. [2020-09-21 12:32:42,905 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 552 transitions. Word has length 54 [2020-09-21 12:32:42,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:42,906 INFO L479 AbstractCegarLoop]: Abstraction has 376 states and 552 transitions. [2020-09-21 12:32:42,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:32:42,906 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 552 transitions. [2020-09-21 12:32:42,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-09-21 12:32:42,913 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:42,913 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-21 12:32:42,913 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:32:42,914 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:42,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:42,914 INFO L82 PathProgramCache]: Analyzing trace with hash -68647627, now seen corresponding path program 1 times [2020-09-21 12:32:42,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:42,915 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [348004523] [2020-09-21 12:32:42,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:42,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:43,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:43,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:43,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:43,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:43,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-09-21 12:32:43,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:32:43,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-21 12:32:43,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:43,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:43,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-21 12:32:43,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-21 12:32:43,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 12:32:44,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:44,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:44,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:44,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:44,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:44,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:44,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:32:44,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:44,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:44,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:44,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:44,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:44,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:32:44,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:44,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:44,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:44,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-21 12:32:44,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:44,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-21 12:32:44,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:44,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:44,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:44,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-21 12:32:44,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 38 [2020-09-21 12:32:44,373 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 46 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:32:44,373 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [348004523] [2020-09-21 12:32:44,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:32:44,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 12:32:44,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115008920] [2020-09-21 12:32:44,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:32:44,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:44,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:32:44,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:32:44,377 INFO L87 Difference]: Start difference. First operand 376 states and 552 transitions. Second operand 5 states. [2020-09-21 12:32:45,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:45,792 INFO L93 Difference]: Finished difference Result 783 states and 1143 transitions. [2020-09-21 12:32:45,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:32:45,793 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2020-09-21 12:32:45,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:45,796 INFO L225 Difference]: With dead ends: 783 [2020-09-21 12:32:45,797 INFO L226 Difference]: Without dead ends: 380 [2020-09-21 12:32:45,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:32:45,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2020-09-21 12:32:45,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 376. [2020-09-21 12:32:45,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2020-09-21 12:32:45,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 506 transitions. [2020-09-21 12:32:45,828 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 506 transitions. Word has length 123 [2020-09-21 12:32:45,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:45,829 INFO L479 AbstractCegarLoop]: Abstraction has 376 states and 506 transitions. [2020-09-21 12:32:45,829 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:32:45,829 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 506 transitions. [2020-09-21 12:32:45,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-09-21 12:32:45,832 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:45,832 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-21 12:32:45,833 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:32:45,833 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:45,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:45,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1954829933, now seen corresponding path program 1 times [2020-09-21 12:32:45,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:45,834 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1365551323] [2020-09-21 12:32:45,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:45,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:45,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:46,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:46,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:46,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-09-21 12:32:46,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:32:46,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1019 [2020-09-21 12:32:46,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:46,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:46,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-09-21 12:32:46,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-21 12:32:46,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:32:47,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:47,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:47,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:47,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:47,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:47,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:47,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:32:47,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:47,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:47,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:47,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:47,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:47,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:32:47,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:47,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:47,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:47,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-21 12:32:47,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:47,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-21 12:32:47,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:47,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:47,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:47,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-21 12:32:47,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:47,149 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 46 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:32:47,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1365551323] [2020-09-21 12:32:47,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:32:47,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 12:32:47,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362365279] [2020-09-21 12:32:47,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:32:47,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:47,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:32:47,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:32:47,152 INFO L87 Difference]: Start difference. First operand 376 states and 506 transitions. Second operand 5 states. [2020-09-21 12:32:48,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:48,746 INFO L93 Difference]: Finished difference Result 934 states and 1292 transitions. [2020-09-21 12:32:48,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:32:48,747 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-09-21 12:32:48,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:48,752 INFO L225 Difference]: With dead ends: 934 [2020-09-21 12:32:48,752 INFO L226 Difference]: Without dead ends: 564 [2020-09-21 12:32:48,753 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:32:48,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2020-09-21 12:32:48,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 560. [2020-09-21 12:32:48,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 560 states. [2020-09-21 12:32:48,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 699 transitions. [2020-09-21 12:32:48,783 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 699 transitions. Word has length 127 [2020-09-21 12:32:48,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:48,783 INFO L479 AbstractCegarLoop]: Abstraction has 560 states and 699 transitions. [2020-09-21 12:32:48,784 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:32:48,784 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 699 transitions. [2020-09-21 12:32:48,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-09-21 12:32:48,789 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:48,789 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:32:48,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 12:32:48,790 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:48,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:48,790 INFO L82 PathProgramCache]: Analyzing trace with hash 760149143, now seen corresponding path program 1 times [2020-09-21 12:32:48,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:48,791 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1817884312] [2020-09-21 12:32:48,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:48,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:48,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:49,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:49,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:49,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:49,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-09-21 12:32:49,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:32:49,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1001 [2020-09-21 12:32:49,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:49,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:49,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-09-21 12:32:49,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-21 12:32:49,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:32:49,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:49,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:49,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:49,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:49,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:49,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:49,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:32:49,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:49,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:49,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:49,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:49,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:49,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:32:49,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:50,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:50,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:50,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-21 12:32:50,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:50,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-21 12:32:50,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:50,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:50,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:50,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-21 12:32:50,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:50,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-21 12:32:50,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:50,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:50,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:50,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-21 12:32:50,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:50,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-09-21 12:32:50,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:50,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:50,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:32:50,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-21 12:32:50,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:50,438 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 164 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 12:32:50,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1817884312] [2020-09-21 12:32:50,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:32:50,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 12:32:50,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018773197] [2020-09-21 12:32:50,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:32:50,441 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:50,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:32:50,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:32:50,442 INFO L87 Difference]: Start difference. First operand 560 states and 699 transitions. Second operand 7 states. [2020-09-21 12:32:52,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:52,386 INFO L93 Difference]: Finished difference Result 1318 states and 1616 transitions. [2020-09-21 12:32:52,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-21 12:32:52,387 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 210 [2020-09-21 12:32:52,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:52,391 INFO L225 Difference]: With dead ends: 1318 [2020-09-21 12:32:52,391 INFO L226 Difference]: Without dead ends: 574 [2020-09-21 12:32:52,393 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-21 12:32:52,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2020-09-21 12:32:52,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 562. [2020-09-21 12:32:52,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 562 states. [2020-09-21 12:32:52,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 624 transitions. [2020-09-21 12:32:52,418 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 624 transitions. Word has length 210 [2020-09-21 12:32:52,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:52,418 INFO L479 AbstractCegarLoop]: Abstraction has 562 states and 624 transitions. [2020-09-21 12:32:52,419 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:32:52,419 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 624 transitions. [2020-09-21 12:32:52,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-09-21 12:32:52,423 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:52,423 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-21 12:32:52,424 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 12:32:52,424 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:52,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:52,424 INFO L82 PathProgramCache]: Analyzing trace with hash -222397767, now seen corresponding path program 1 times [2020-09-21 12:32:52,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:52,425 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [707067368] [2020-09-21 12:32:52,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:52,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:52,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:52,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:53,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:53,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-09-21 12:32:53,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:32:53,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1044 [2020-09-21 12:32:53,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:53,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:32:53,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:32:53,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-09-21 12:32:53,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:53,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:53,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:53,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:53,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:53,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:53,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:53,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:32:53,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:53,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:53,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:53,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:32:53,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:53,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:32:53,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:53,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:54,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:54,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-21 12:32:54,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:54,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 307 [2020-09-21 12:32:54,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:54,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:54,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:32:54,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-09-21 12:32:54,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:54,244 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:32:54,244 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [707067368] [2020-09-21 12:32:54,244 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:32:54,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 12:32:54,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445049419] [2020-09-21 12:32:54,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:32:54,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:54,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:32:54,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:32:54,246 INFO L87 Difference]: Start difference. First operand 562 states and 624 transitions. Second operand 7 states. [2020-09-21 12:32:55,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:55,777 INFO L93 Difference]: Finished difference Result 1504 states and 1705 transitions. [2020-09-21 12:32:55,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 12:32:55,778 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 233 [2020-09-21 12:32:55,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:55,783 INFO L225 Difference]: With dead ends: 1504 [2020-09-21 12:32:55,784 INFO L226 Difference]: Without dead ends: 948 [2020-09-21 12:32:55,786 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-21 12:32:55,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 948 states. [2020-09-21 12:32:55,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 948 to 934. [2020-09-21 12:32:55,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 934 states. [2020-09-21 12:32:55,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 934 states to 934 states and 1017 transitions. [2020-09-21 12:32:55,813 INFO L78 Accepts]: Start accepts. Automaton has 934 states and 1017 transitions. Word has length 233 [2020-09-21 12:32:55,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:55,814 INFO L479 AbstractCegarLoop]: Abstraction has 934 states and 1017 transitions. [2020-09-21 12:32:55,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:32:55,814 INFO L276 IsEmpty]: Start isEmpty. Operand 934 states and 1017 transitions. [2020-09-21 12:32:55,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2020-09-21 12:32:55,819 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:55,820 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:32:55,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 12:32:55,820 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:55,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:55,821 INFO L82 PathProgramCache]: Analyzing trace with hash 622459871, now seen corresponding path program 1 times [2020-09-21 12:32:55,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:55,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [924055174] [2020-09-21 12:32:55,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:55,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:55,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:56,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:56,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:56,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:56,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 355 [2020-09-21 12:32:56,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:32:56,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1039 [2020-09-21 12:32:56,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:56,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:56,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 120 [2020-09-21 12:32:56,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-09-21 12:32:56,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:57,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:57,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:57,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:57,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:57,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:57,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:57,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:32:57,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:57,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:57,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:57,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:57,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:57,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:32:57,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:57,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:57,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:57,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-21 12:32:57,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:57,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-09-21 12:32:57,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:57,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:57,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:57,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-21 12:32:57,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:57,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-09-21 12:32:57,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:57,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:57,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:57,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-21 12:32:57,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:57,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 284 [2020-09-21 12:32:57,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:57,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:57,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:32:57,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-09-21 12:32:57,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:57,935 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 200 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 12:32:57,936 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [924055174] [2020-09-21 12:32:57,937 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:32:57,937 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 12:32:57,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044830851] [2020-09-21 12:32:57,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:32:57,939 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:57,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:32:57,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:32:57,939 INFO L87 Difference]: Start difference. First operand 934 states and 1017 transitions. Second operand 7 states. [2020-09-21 12:32:59,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:59,662 INFO L93 Difference]: Finished difference Result 2624 states and 2902 transitions. [2020-09-21 12:32:59,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 12:32:59,663 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 342 [2020-09-21 12:32:59,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:59,670 INFO L225 Difference]: With dead ends: 2624 [2020-09-21 12:32:59,671 INFO L226 Difference]: Without dead ends: 1696 [2020-09-21 12:32:59,673 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-21 12:32:59,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1696 states. [2020-09-21 12:32:59,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1696 to 1678. [2020-09-21 12:32:59,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1678 states. [2020-09-21 12:32:59,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1678 states to 1678 states and 1833 transitions. [2020-09-21 12:32:59,721 INFO L78 Accepts]: Start accepts. Automaton has 1678 states and 1833 transitions. Word has length 342 [2020-09-21 12:32:59,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:59,722 INFO L479 AbstractCegarLoop]: Abstraction has 1678 states and 1833 transitions. [2020-09-21 12:32:59,722 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:32:59,722 INFO L276 IsEmpty]: Start isEmpty. Operand 1678 states and 1833 transitions. [2020-09-21 12:32:59,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2020-09-21 12:32:59,728 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:59,728 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:32:59,729 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 12:32:59,729 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:59,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:59,729 INFO L82 PathProgramCache]: Analyzing trace with hash 1021842063, now seen corresponding path program 1 times [2020-09-21 12:32:59,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:59,730 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1353591588] [2020-09-21 12:32:59,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:59,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:59,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:59,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:00,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:00,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:00,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 379 [2020-09-21 12:33:00,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:33:00,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1010 [2020-09-21 12:33:00,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:00,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:33:00,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 325 [2020-09-21 12:33:00,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-21 12:33:00,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:00,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:33:00,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:00,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:00,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:00,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:33:00,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:00,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:33:00,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:00,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:33:00,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:33:00,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:33:00,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:00,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:33:00,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:00,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:00,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:00,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-09-21 12:33:00,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:00,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-21 12:33:00,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:00,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:33:00,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:33:00,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:33:00,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:01,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-21 12:33:01,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:01,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:01,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:01,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-21 12:33:01,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:01,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-09-21 12:33:01,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:01,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:33:01,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:33:01,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-09-21 12:33:01,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:01,400 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 95 proven. 2 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2020-09-21 12:33:01,401 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1353591588] [2020-09-21 12:33:01,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:33:01,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 12:33:01,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727829768] [2020-09-21 12:33:01,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:33:01,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:33:01,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:33:01,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:33:01,403 INFO L87 Difference]: Start difference. First operand 1678 states and 1833 transitions. Second operand 5 states. [2020-09-21 12:33:02,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:33:02,562 INFO L93 Difference]: Finished difference Result 3546 states and 3972 transitions. [2020-09-21 12:33:02,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:33:02,564 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 366 [2020-09-21 12:33:02,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:33:02,574 INFO L225 Difference]: With dead ends: 3546 [2020-09-21 12:33:02,575 INFO L226 Difference]: Without dead ends: 2056 [2020-09-21 12:33:02,579 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:33:02,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2056 states. [2020-09-21 12:33:02,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2056 to 2052. [2020-09-21 12:33:02,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2052 states. [2020-09-21 12:33:02,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2052 states to 2052 states and 2294 transitions. [2020-09-21 12:33:02,640 INFO L78 Accepts]: Start accepts. Automaton has 2052 states and 2294 transitions. Word has length 366 [2020-09-21 12:33:02,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:33:02,642 INFO L479 AbstractCegarLoop]: Abstraction has 2052 states and 2294 transitions. [2020-09-21 12:33:02,643 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:33:02,643 INFO L276 IsEmpty]: Start isEmpty. Operand 2052 states and 2294 transitions. [2020-09-21 12:33:02,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2020-09-21 12:33:02,653 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:33:02,653 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:33:02,654 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 12:33:02,654 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:33:02,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:33:02,654 INFO L82 PathProgramCache]: Analyzing trace with hash -1740316258, now seen corresponding path program 1 times [2020-09-21 12:33:02,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:33:02,655 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2147421493] [2020-09-21 12:33:02,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:33:02,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:02,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:02,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:03,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:03,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:03,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 461 [2020-09-21 12:33:03,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:33:03,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1028 [2020-09-21 12:33:03,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:03,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:33:03,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 407 [2020-09-21 12:33:03,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-21 12:33:03,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:03,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:33:03,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:03,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:03,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:03,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:33:03,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:03,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:33:03,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:03,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:33:03,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:33:03,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:33:03,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:33:03,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:33:03,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:03,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:04,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:04,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-09-21 12:33:04,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:04,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-21 12:33:04,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:04,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:33:04,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:33:04,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:33:04,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:04,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-21 12:33:04,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:04,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:04,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:04,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-21 12:33:04,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:04,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-21 12:33:04,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:04,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:33:04,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:33:04,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:33:04,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:04,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2020-09-21 12:33:04,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:04,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:04,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:04,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-21 12:33:04,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:04,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-21 12:33:04,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:04,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:33:04,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:33:04,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-21 12:33:04,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:04,468 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 144 proven. 3 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2020-09-21 12:33:04,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2147421493] [2020-09-21 12:33:04,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:33:04,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 12:33:04,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881947170] [2020-09-21 12:33:04,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:33:04,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:33:04,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:33:04,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:33:04,471 INFO L87 Difference]: Start difference. First operand 2052 states and 2294 transitions. Second operand 5 states. [2020-09-21 12:33:05,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:33:05,692 INFO L93 Difference]: Finished difference Result 4838 states and 5526 transitions. [2020-09-21 12:33:05,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:33:05,693 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 446 [2020-09-21 12:33:05,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:33:05,707 INFO L225 Difference]: With dead ends: 4838 [2020-09-21 12:33:05,707 INFO L226 Difference]: Without dead ends: 2974 [2020-09-21 12:33:05,712 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:33:05,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2974 states. [2020-09-21 12:33:05,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2974 to 2974. [2020-09-21 12:33:05,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2974 states. [2020-09-21 12:33:05,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2974 states to 2974 states and 3326 transitions. [2020-09-21 12:33:05,788 INFO L78 Accepts]: Start accepts. Automaton has 2974 states and 3326 transitions. Word has length 446 [2020-09-21 12:33:05,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:33:05,789 INFO L479 AbstractCegarLoop]: Abstraction has 2974 states and 3326 transitions. [2020-09-21 12:33:05,789 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:33:05,789 INFO L276 IsEmpty]: Start isEmpty. Operand 2974 states and 3326 transitions. [2020-09-21 12:33:05,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2020-09-21 12:33:05,794 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:33:05,795 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:33:05,795 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 12:33:05,795 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:33:05,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:33:05,796 INFO L82 PathProgramCache]: Analyzing trace with hash 764060722, now seen corresponding path program 1 times [2020-09-21 12:33:05,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:33:05,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1402989540] [2020-09-21 12:33:05,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:33:05,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:05,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:06,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:06,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:06,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:06,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 467 [2020-09-21 12:33:06,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:33:06,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1058 [2020-09-21 12:33:06,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:06,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:33:06,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 413 [2020-09-21 12:33:06,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-21 12:33:06,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:07,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:33:07,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:07,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:07,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:07,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:33:07,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:07,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:33:07,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:07,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:33:07,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:33:07,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:33:07,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:07,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:33:07,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:07,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:07,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:07,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-09-21 12:33:07,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:07,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-21 12:33:07,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:07,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:33:07,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:33:07,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:33:07,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:07,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-21 12:33:07,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:07,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:07,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:07,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-21 12:33:07,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:07,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-21 12:33:07,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:07,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:33:07,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:33:07,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:33:07,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:07,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2020-09-21 12:33:07,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:07,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:07,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:07,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-21 12:33:07,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:07,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-21 12:33:07,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:07,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:33:07,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:33:07,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-21 12:33:07,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:07,534 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 144 proven. 3 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2020-09-21 12:33:07,535 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1402989540] [2020-09-21 12:33:07,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:33:07,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-21 12:33:07,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238251340] [2020-09-21 12:33:07,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 12:33:07,538 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:33:07,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 12:33:07,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:33:07,539 INFO L87 Difference]: Start difference. First operand 2974 states and 3326 transitions. Second operand 6 states. [2020-09-21 12:33:09,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:33:09,252 INFO L93 Difference]: Finished difference Result 3346 states and 3821 transitions. [2020-09-21 12:33:09,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 12:33:09,252 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 452 [2020-09-21 12:33:09,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:33:09,267 INFO L225 Difference]: With dead ends: 3346 [2020-09-21 12:33:09,268 INFO L226 Difference]: Without dead ends: 3344 [2020-09-21 12:33:09,269 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:33:09,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3344 states. [2020-09-21 12:33:09,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3344 to 3160. [2020-09-21 12:33:09,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3160 states. [2020-09-21 12:33:09,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3160 states to 3160 states and 3586 transitions. [2020-09-21 12:33:09,349 INFO L78 Accepts]: Start accepts. Automaton has 3160 states and 3586 transitions. Word has length 452 [2020-09-21 12:33:09,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:33:09,350 INFO L479 AbstractCegarLoop]: Abstraction has 3160 states and 3586 transitions. [2020-09-21 12:33:09,350 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 12:33:09,351 INFO L276 IsEmpty]: Start isEmpty. Operand 3160 states and 3586 transitions. [2020-09-21 12:33:09,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2020-09-21 12:33:09,356 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:33:09,356 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:33:09,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 12:33:09,357 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:33:09,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:33:09,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1479931810, now seen corresponding path program 1 times [2020-09-21 12:33:09,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:33:09,358 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1903777676] [2020-09-21 12:33:09,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:33:09,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:09,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:09,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:09,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:10,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:10,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 475 [2020-09-21 12:33:10,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:33:10,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1023 [2020-09-21 12:33:10,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:10,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:33:10,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 144 [2020-09-21 12:33:10,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-09-21 12:33:10,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:10,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:33:10,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:10,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:10,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:10,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:33:10,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:10,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:33:10,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:10,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:33:10,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:33:10,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:33:10,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:10,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:33:10,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:10,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:10,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:10,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-09-21 12:33:10,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:10,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-09-21 12:33:10,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:10,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:33:10,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:33:10,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-21 12:33:10,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:10,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-21 12:33:10,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:10,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:11,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:11,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-21 12:33:11,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:11,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 328 [2020-09-21 12:33:11,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:11,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:33:11,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:33:11,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-09-21 12:33:11,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:11,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2020-09-21 12:33:11,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:11,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:11,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:11,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-21 12:33:11,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:11,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-21 12:33:11,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:11,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:33:11,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-09-21 12:33:11,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:33:11,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:11,456 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 275 proven. 93 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-09-21 12:33:11,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1903777676] [2020-09-21 12:33:11,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:33:11,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 12:33:11,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284019876] [2020-09-21 12:33:11,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:33:11,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:33:11,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:33:11,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:33:11,458 INFO L87 Difference]: Start difference. First operand 3160 states and 3586 transitions. Second operand 7 states. [2020-09-21 12:33:13,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:33:13,333 INFO L93 Difference]: Finished difference Result 7336 states and 8820 transitions. [2020-09-21 12:33:13,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 12:33:13,334 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 460 [2020-09-21 12:33:13,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:33:13,357 INFO L225 Difference]: With dead ends: 7336 [2020-09-21 12:33:13,357 INFO L226 Difference]: Without dead ends: 4364 [2020-09-21 12:33:13,369 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-21 12:33:13,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4364 states. [2020-09-21 12:33:13,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4364 to 4274. [2020-09-21 12:33:13,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4274 states. [2020-09-21 12:33:13,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4274 states to 4274 states and 4860 transitions. [2020-09-21 12:33:13,493 INFO L78 Accepts]: Start accepts. Automaton has 4274 states and 4860 transitions. Word has length 460 [2020-09-21 12:33:13,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:33:13,493 INFO L479 AbstractCegarLoop]: Abstraction has 4274 states and 4860 transitions. [2020-09-21 12:33:13,494 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:33:13,494 INFO L276 IsEmpty]: Start isEmpty. Operand 4274 states and 4860 transitions. [2020-09-21 12:33:13,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 638 [2020-09-21 12:33:13,501 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:33:13,502 INFO L422 BasicCegarLoop]: trace histogram [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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:33:13,502 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-21 12:33:13,503 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:33:13,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:33:13,504 INFO L82 PathProgramCache]: Analyzing trace with hash -615262044, now seen corresponding path program 1 times [2020-09-21 12:33:13,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:33:13,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [311469765] [2020-09-21 12:33:13,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:33:13,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:13,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:13,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:14,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:14,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:14,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:14,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 654 [2020-09-21 12:33:14,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-21 12:33:14,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1020 [2020-09-21 12:33:14,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:14,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:33:14,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 144 [2020-09-21 12:33:14,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-09-21 12:33:14,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:14,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:33:14,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:14,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:14,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:14,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:33:14,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:14,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:33:14,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:14,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:33:14,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:33:14,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:33:14,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:14,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:33:14,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:14,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:14,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:14,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-09-21 12:33:14,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:14,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-09-21 12:33:14,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:14,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:33:14,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:33:14,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-21 12:33:14,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:33:14,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-21 12:33:14,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:15,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:15,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:15,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-09-21 12:33:15,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:15,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 270 [2020-09-21 12:33:15,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:15,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:33:15,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:33:15,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-09-21 12:33:15,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:15,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2020-09-21 12:33:15,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:15,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:15,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:15,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-21 12:33:15,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:15,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-21 12:33:15,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:15,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:33:15,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 178 [2020-09-21 12:33:15,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:33:15,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:15,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 497 [2020-09-21 12:33:15,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:15,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:15,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:15,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-21 12:33:15,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:15,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-21 12:33:15,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:15,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:33:15,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-09-21 12:33:15,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:33:15,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:15,950 INFO L134 CoverageAnalysis]: Checked inductivity of 913 backedges. 326 proven. 267 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked. [2020-09-21 12:33:15,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [311469765] [2020-09-21 12:33:15,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:33:15,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 12:33:15,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383817213] [2020-09-21 12:33:15,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:33:15,952 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:33:15,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:33:15,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:33:15,953 INFO L87 Difference]: Start difference. First operand 4274 states and 4860 transitions. Second operand 7 states. [2020-09-21 12:33:17,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:33:17,853 INFO L93 Difference]: Finished difference Result 8558 states and 9779 transitions. [2020-09-21 12:33:17,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 12:33:17,853 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 637 [2020-09-21 12:33:17,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:33:17,873 INFO L225 Difference]: With dead ends: 8558 [2020-09-21 12:33:17,873 INFO L226 Difference]: Without dead ends: 4280 [2020-09-21 12:33:17,885 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-09-21 12:33:17,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4280 states. [2020-09-21 12:33:17,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4280 to 4090. [2020-09-21 12:33:17,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4090 states. [2020-09-21 12:33:17,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4090 states to 4090 states and 4615 transitions. [2020-09-21 12:33:17,969 INFO L78 Accepts]: Start accepts. Automaton has 4090 states and 4615 transitions. Word has length 637 [2020-09-21 12:33:17,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:33:17,970 INFO L479 AbstractCegarLoop]: Abstraction has 4090 states and 4615 transitions. [2020-09-21 12:33:17,970 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:33:17,970 INFO L276 IsEmpty]: Start isEmpty. Operand 4090 states and 4615 transitions. [2020-09-21 12:33:17,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 724 [2020-09-21 12:33:17,979 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:33:17,979 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 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] [2020-09-21 12:33:17,980 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-21 12:33:17,980 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:33:17,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:33:17,980 INFO L82 PathProgramCache]: Analyzing trace with hash -1454134783, now seen corresponding path program 1 times [2020-09-21 12:33:17,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:33:17,981 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [84914893] [2020-09-21 12:33:17,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:33:18,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:18,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:18,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:19,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:19,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:19,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 742 [2020-09-21 12:33:19,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:33:19,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1361 [2020-09-21 12:33:19,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:19,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:33:19,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 232 [2020-09-21 12:33:19,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-09-21 12:33:19,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:19,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:33:19,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:19,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:19,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:19,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:33:19,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:19,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:33:19,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:19,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:33:19,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:33:19,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:33:19,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:19,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:33:19,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:19,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:19,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:19,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-21 12:33:19,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:19,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-21 12:33:19,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:19,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:33:19,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:33:19,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:33:19,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:19,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-09-21 12:33:19,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:19,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:19,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:19,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-21 12:33:19,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:19,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-09-21 12:33:19,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:19,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:33:19,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:33:19,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-21 12:33:19,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:33:19,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-09-21 12:33:19,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:19,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:20,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:20,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-09-21 12:33:20,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:20,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 369 [2020-09-21 12:33:20,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:20,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:33:20,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:33:20,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-09-21 12:33:20,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:33:20,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2020-09-21 12:33:20,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:20,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:20,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:20,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-21 12:33:20,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:20,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-21 12:33:20,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:20,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:33:20,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 178 [2020-09-21 12:33:20,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:33:20,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:20,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 583 [2020-09-21 12:33:20,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:20,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:20,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:20,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-21 12:33:20,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:20,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-21 12:33:20,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:20,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:33:20,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-09-21 12:33:20,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:33:20,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:20,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1335 backedges. 469 proven. 267 refuted. 0 times theorem prover too weak. 599 trivial. 0 not checked. [2020-09-21 12:33:20,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [84914893] [2020-09-21 12:33:20,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:33:20,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 12:33:20,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915763183] [2020-09-21 12:33:20,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:33:20,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:33:20,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:33:20,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:33:20,902 INFO L87 Difference]: Start difference. First operand 4090 states and 4615 transitions. Second operand 7 states. [2020-09-21 12:33:22,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:33:22,426 INFO L93 Difference]: Finished difference Result 8360 states and 9504 transitions. [2020-09-21 12:33:22,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 12:33:22,427 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 723 [2020-09-21 12:33:22,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:33:22,444 INFO L225 Difference]: With dead ends: 8360 [2020-09-21 12:33:22,444 INFO L226 Difference]: Without dead ends: 4458 [2020-09-21 12:33:22,452 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-09-21 12:33:22,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4458 states. [2020-09-21 12:33:22,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4458 to 4456. [2020-09-21 12:33:22,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4456 states. [2020-09-21 12:33:22,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4456 states to 4456 states and 5033 transitions. [2020-09-21 12:33:22,540 INFO L78 Accepts]: Start accepts. Automaton has 4456 states and 5033 transitions. Word has length 723 [2020-09-21 12:33:22,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:33:22,541 INFO L479 AbstractCegarLoop]: Abstraction has 4456 states and 5033 transitions. [2020-09-21 12:33:22,541 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:33:22,541 INFO L276 IsEmpty]: Start isEmpty. Operand 4456 states and 5033 transitions. [2020-09-21 12:33:22,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 823 [2020-09-21 12:33:22,551 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:33:22,551 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:33:22,552 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-21 12:33:22,552 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:33:22,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:33:22,552 INFO L82 PathProgramCache]: Analyzing trace with hash 837626905, now seen corresponding path program 1 times [2020-09-21 12:33:22,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:33:22,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [590931701] [2020-09-21 12:33:22,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:33:22,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:22,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:23,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:23,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:23,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 843 [2020-09-21 12:33:23,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:33:23,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1009 [2020-09-21 12:33:23,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:23,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:33:23,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 512 [2020-09-21 12:33:23,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-09-21 12:33:23,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:23,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:33:23,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:23,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:23,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:23,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:33:23,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:23,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:33:23,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:23,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:33:23,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:33:23,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:33:23,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:23,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:33:23,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:23,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:23,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:23,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-21 12:33:23,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:23,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-21 12:33:23,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:23,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:33:23,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:33:23,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:33:23,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:23,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-09-21 12:33:23,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:23,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:23,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:23,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-21 12:33:23,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:23,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-21 12:33:23,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:23,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:33:23,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:33:23,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:33:23,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:23,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-09-21 12:33:23,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:24,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:24,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:24,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-21 12:33:24,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:24,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-21 12:33:24,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:24,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:33:24,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:33:24,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:33:24,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:33:24,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-09-21 12:33:24,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:24,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:24,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:24,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-09-21 12:33:24,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:24,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-09-21 12:33:24,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:24,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:33:24,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:33:24,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-09-21 12:33:24,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:24,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-09-21 12:33:24,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:24,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:24,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:24,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-21 12:33:24,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:24,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-09-21 12:33:24,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:24,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:33:24,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:33:24,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-09-21 12:33:24,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:24,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 682 [2020-09-21 12:33:24,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:24,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:24,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:24,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-21 12:33:24,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:24,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-21 12:33:24,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:24,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:33:24,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-09-21 12:33:24,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:33:24,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:24,982 INFO L134 CoverageAnalysis]: Checked inductivity of 1911 backedges. 796 proven. 93 refuted. 0 times theorem prover too weak. 1022 trivial. 0 not checked. [2020-09-21 12:33:24,982 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [590931701] [2020-09-21 12:33:24,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:33:24,982 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 12:33:24,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889224622] [2020-09-21 12:33:24,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:33:24,983 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:33:24,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:33:24,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:33:24,984 INFO L87 Difference]: Start difference. First operand 4456 states and 5033 transitions. Second operand 7 states. [2020-09-21 12:33:26,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:33:26,591 INFO L93 Difference]: Finished difference Result 9828 states and 11289 transitions. [2020-09-21 12:33:26,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 12:33:26,591 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 822 [2020-09-21 12:33:26,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:33:26,611 INFO L225 Difference]: With dead ends: 9828 [2020-09-21 12:33:26,611 INFO L226 Difference]: Without dead ends: 5560 [2020-09-21 12:33:26,620 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-21 12:33:26,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5560 states. [2020-09-21 12:33:26,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5560 to 5370. [2020-09-21 12:33:26,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5370 states. [2020-09-21 12:33:26,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5370 states to 5370 states and 6115 transitions. [2020-09-21 12:33:26,712 INFO L78 Accepts]: Start accepts. Automaton has 5370 states and 6115 transitions. Word has length 822 [2020-09-21 12:33:26,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:33:26,714 INFO L479 AbstractCegarLoop]: Abstraction has 5370 states and 6115 transitions. [2020-09-21 12:33:26,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:33:26,714 INFO L276 IsEmpty]: Start isEmpty. Operand 5370 states and 6115 transitions. [2020-09-21 12:33:26,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 899 [2020-09-21 12:33:26,725 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:33:26,726 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:33:26,726 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-21 12:33:26,727 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:33:26,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:33:26,727 INFO L82 PathProgramCache]: Analyzing trace with hash 765732386, now seen corresponding path program 1 times [2020-09-21 12:33:26,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:33:26,728 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1123801898] [2020-09-21 12:33:26,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:33:26,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat