/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label55.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 13:15:51,715 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 13:15:51,718 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 13:15:51,742 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 13:15:51,742 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 13:15:51,743 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 13:15:51,744 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 13:15:51,746 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 13:15:51,748 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 13:15:51,749 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 13:15:51,749 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 13:15:51,750 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 13:15:51,751 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 13:15:51,752 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 13:15:51,753 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 13:15:51,754 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 13:15:51,761 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 13:15:51,762 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 13:15:51,764 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 13:15:51,769 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 13:15:51,772 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 13:15:51,774 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 13:15:51,777 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 13:15:51,778 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 13:15:51,782 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 13:15:51,782 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 13:15:51,782 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 13:15:51,784 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 13:15:51,784 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 13:15:51,787 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 13:15:51,787 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 13:15:51,789 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 13:15:51,790 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 13:15:51,790 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 13:15:51,791 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 13:15:51,792 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 13:15:51,792 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 13:15:51,792 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 13:15:51,793 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 13:15:51,800 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 13:15:51,801 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 13:15:51,805 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 13:15:51,843 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 13:15:51,843 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 13:15:51,845 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 13:15:51,845 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 13:15:51,846 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 13:15:51,846 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 13:15:51,846 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 13:15:51,847 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 13:15:51,847 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 13:15:51,847 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 13:15:51,848 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 13:15:51,848 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 13:15:51,848 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 13:15:51,849 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 13:15:51,849 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 13:15:51,849 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 13:15:51,849 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 13:15:51,849 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 13:15:51,850 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 13:15:51,850 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 13:15:51,850 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 13:15:51,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 13:15:51,850 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 13:15:51,850 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 13:15:51,851 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 13:15:51,851 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 13:15:51,851 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 13:15:51,851 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 13:15:51,851 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 13:15:51,852 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 13:15:52,139 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 13:15:52,151 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 13:15:52,155 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 13:15:52,157 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 13:15:52,157 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 13:15:52,158 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label55.c [2020-10-12 13:15:52,230 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d3c84f31b/52836ecb3daf4ae4870a42950bd89db7/FLAGdf976d60a [2020-10-12 13:15:52,876 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 13:15:52,879 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label55.c [2020-10-12 13:15:52,914 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d3c84f31b/52836ecb3daf4ae4870a42950bd89db7/FLAGdf976d60a [2020-10-12 13:15:53,117 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d3c84f31b/52836ecb3daf4ae4870a42950bd89db7 [2020-10-12 13:15:53,126 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 13:15:53,127 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 13:15:53,128 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 13:15:53,129 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 13:15:53,134 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 13:15:53,135 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 01:15:53" (1/1) ... [2020-10-12 13:15:53,138 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@521b4ac6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:15:53, skipping insertion in model container [2020-10-12 13:15:53,139 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 01:15:53" (1/1) ... [2020-10-12 13:15:53,148 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 13:15:53,204 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 13:15:53,997 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 13:15:54,009 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 13:15:54,225 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 13:15:54,249 INFO L208 MainTranslator]: Completed translation [2020-10-12 13:15:54,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:15:54 WrapperNode [2020-10-12 13:15:54,250 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 13:15:54,251 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 13:15:54,252 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 13:15:54,252 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 13:15:54,275 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:15:54" (1/1) ... [2020-10-12 13:15:54,275 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:15:54" (1/1) ... [2020-10-12 13:15:54,300 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:15:54" (1/1) ... [2020-10-12 13:15:54,300 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:15:54" (1/1) ... [2020-10-12 13:15:54,366 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:15:54" (1/1) ... [2020-10-12 13:15:54,387 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:15:54" (1/1) ... [2020-10-12 13:15:54,395 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:15:54" (1/1) ... [2020-10-12 13:15:54,404 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 13:15:54,405 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 13:15:54,405 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 13:15:54,406 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 13:15:54,407 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:15:54" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 13:15:54,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 13:15:54,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 13:15:54,508 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 13:15:54,508 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 13:15:54,508 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 13:15:54,509 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 13:15:54,509 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 13:15:54,509 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 13:15:54,509 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 13:15:54,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 13:15:54,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 13:15:56,375 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 13:15:56,375 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 13:15:56,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 01:15:56 BoogieIcfgContainer [2020-10-12 13:15:56,383 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 13:15:56,384 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 13:15:56,384 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 13:15:56,388 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 13:15:56,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 01:15:53" (1/3) ... [2020-10-12 13:15:56,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70042e28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 01:15:56, skipping insertion in model container [2020-10-12 13:15:56,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:15:54" (2/3) ... [2020-10-12 13:15:56,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70042e28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 01:15:56, skipping insertion in model container [2020-10-12 13:15:56,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 01:15:56" (3/3) ... [2020-10-12 13:15:56,392 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label55.c [2020-10-12 13:15:56,403 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 13:15:56,412 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 13:15:56,427 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 13:15:56,453 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 13:15:56,454 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 13:15:56,454 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 13:15:56,454 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 13:15:56,454 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 13:15:56,455 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 13:15:56,455 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 13:15:56,455 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 13:15:56,479 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states. [2020-10-12 13:15:56,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-12 13:15:56,492 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:15:56,493 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] [2020-10-12 13:15:56,493 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:15:56,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:15:56,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1587257066, now seen corresponding path program 1 times [2020-10-12 13:15:56,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:15:56,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1852689721] [2020-10-12 13:15:56,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:15:56,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:56,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:57,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:57,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-12 13:15:57,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:15:57,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 445 [2020-10-12 13:15:57,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:57,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:15:57,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:15:57,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-12 13:15:57,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 13:15:57,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:15:57,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:57,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:15:57,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:15:57,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:15:57,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:15:57,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 13:15:57,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:15:57,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:15:57,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:15:57,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:15:57,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:15:57,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:15:57,275 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1852689721] [2020-10-12 13:15:57,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:15:57,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 13:15:57,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130183424] [2020-10-12 13:15:57,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 13:15:57,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:15:57,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 13:15:57,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 13:15:57,302 INFO L87 Difference]: Start difference. First operand 292 states. Second operand 4 states. [2020-10-12 13:15:59,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:15:59,717 INFO L93 Difference]: Finished difference Result 791 states and 1386 transitions. [2020-10-12 13:15:59,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:15:59,719 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-10-12 13:15:59,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:15:59,740 INFO L225 Difference]: With dead ends: 791 [2020-10-12 13:15:59,740 INFO L226 Difference]: Without dead ends: 434 [2020-10-12 13:15:59,752 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:15:59,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2020-10-12 13:15:59,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 430. [2020-10-12 13:15:59,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 430 states. [2020-10-12 13:15:59,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 618 transitions. [2020-10-12 13:15:59,852 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 618 transitions. Word has length 51 [2020-10-12 13:15:59,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:15:59,853 INFO L479 AbstractCegarLoop]: Abstraction has 430 states and 618 transitions. [2020-10-12 13:15:59,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 13:15:59,854 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 618 transitions. [2020-10-12 13:15:59,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-12 13:15:59,870 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:15:59,871 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:15:59,871 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 13:15:59,871 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:15:59,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:15:59,872 INFO L82 PathProgramCache]: Analyzing trace with hash -1592222806, now seen corresponding path program 1 times [2020-10-12 13:15:59,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:15:59,873 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1605171433] [2020-10-12 13:15:59,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:15:59,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:15:59,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:00,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:01,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:01,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:01,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-12 13:16:01,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:16:01,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1639 [2020-10-12 13:16:01,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:01,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:16:01,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:16:01,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-12 13:16:01,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 13:16:01,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:16:01,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:01,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:01,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:01,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:16:01,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:16:01,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 13:16:01,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:01,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:16:01,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:16:01,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:16:01,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 13:16:01,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:16:01,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:01,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:01,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:01,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 13:16:01,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:16:01,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-12 13:16:01,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:01,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:16:01,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:16:01,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-12 13:16:01,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:01,947 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:16:01,948 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1605171433] [2020-10-12 13:16:01,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:16:01,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 13:16:01,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218878800] [2020-10-12 13:16:01,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 13:16:01,952 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:16:01,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 13:16:01,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:16:01,952 INFO L87 Difference]: Start difference. First operand 430 states and 618 transitions. Second operand 8 states. [2020-10-12 13:16:05,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:16:05,346 INFO L93 Difference]: Finished difference Result 1664 states and 2471 transitions. [2020-10-12 13:16:05,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 13:16:05,346 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 123 [2020-10-12 13:16:05,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:16:05,356 INFO L225 Difference]: With dead ends: 1664 [2020-10-12 13:16:05,356 INFO L226 Difference]: Without dead ends: 1240 [2020-10-12 13:16:05,358 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-12 13:16:05,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2020-10-12 13:16:05,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1208. [2020-10-12 13:16:05,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1208 states. [2020-10-12 13:16:05,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1208 states to 1208 states and 1690 transitions. [2020-10-12 13:16:05,432 INFO L78 Accepts]: Start accepts. Automaton has 1208 states and 1690 transitions. Word has length 123 [2020-10-12 13:16:05,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:16:05,433 INFO L479 AbstractCegarLoop]: Abstraction has 1208 states and 1690 transitions. [2020-10-12 13:16:05,433 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 13:16:05,433 INFO L276 IsEmpty]: Start isEmpty. Operand 1208 states and 1690 transitions. [2020-10-12 13:16:05,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-12 13:16:05,436 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:16:05,436 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:16:05,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 13:16:05,437 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:16:05,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:16:05,437 INFO L82 PathProgramCache]: Analyzing trace with hash -654834599, now seen corresponding path program 1 times [2020-10-12 13:16:05,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:16:05,438 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1280827882] [2020-10-12 13:16:05,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:16:05,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:05,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:05,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:06,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:06,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-12 13:16:06,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:16:06,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1393 [2020-10-12 13:16:06,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:06,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:16:06,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:16:06,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-12 13:16:06,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:06,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:16:06,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:06,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:06,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:06,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:16:06,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:16:06,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 13:16:06,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:06,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:16:06,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:16:06,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:16:06,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:06,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:16:07,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:07,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:07,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:07,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 13:16:07,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:16:07,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-12 13:16:07,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:07,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:16:07,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:16:07,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 13:16:07,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:16:07,387 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:16:07,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1280827882] [2020-10-12 13:16:07,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:16:07,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 13:16:07,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508238159] [2020-10-12 13:16:07,391 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:16:07,391 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:16:07,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:16:07,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:16:07,392 INFO L87 Difference]: Start difference. First operand 1208 states and 1690 transitions. Second operand 7 states. [2020-10-12 13:16:09,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:16:09,972 INFO L93 Difference]: Finished difference Result 3040 states and 4224 transitions. [2020-10-12 13:16:09,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 13:16:09,973 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 124 [2020-10-12 13:16:09,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:16:09,992 INFO L225 Difference]: With dead ends: 3040 [2020-10-12 13:16:09,993 INFO L226 Difference]: Without dead ends: 1838 [2020-10-12 13:16:09,999 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-12 13:16:10,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1838 states. [2020-10-12 13:16:10,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1838 to 1808. [2020-10-12 13:16:10,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1808 states. [2020-10-12 13:16:10,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1808 states to 1808 states and 2364 transitions. [2020-10-12 13:16:10,089 INFO L78 Accepts]: Start accepts. Automaton has 1808 states and 2364 transitions. Word has length 124 [2020-10-12 13:16:10,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:16:10,091 INFO L479 AbstractCegarLoop]: Abstraction has 1808 states and 2364 transitions. [2020-10-12 13:16:10,091 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:16:10,092 INFO L276 IsEmpty]: Start isEmpty. Operand 1808 states and 2364 transitions. [2020-10-12 13:16:10,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-12 13:16:10,098 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:16:10,098 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:16:10,098 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 13:16:10,099 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:16:10,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:16:10,099 INFO L82 PathProgramCache]: Analyzing trace with hash 1443072066, now seen corresponding path program 1 times [2020-10-12 13:16:10,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:16:10,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1742594838] [2020-10-12 13:16:10,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:16:10,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:10,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:10,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:10,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-12 13:16:10,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:16:10,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 387 [2020-10-12 13:16:10,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:10,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:16:10,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-12 13:16:10,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-12 13:16:10,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:10,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:16:10,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:10,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:10,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:10,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:16:10,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:16:10,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 13:16:10,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:10,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:16:10,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:16:10,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:16:10,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-12 13:16:10,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:16:10,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:10,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:10,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:10,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:16:10,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:16:10,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-12 13:16:10,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:10,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:16:10,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:16:10,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-12 13:16:10,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:10,980 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 43 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:16:10,982 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1742594838] [2020-10-12 13:16:10,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:16:10,982 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 13:16:10,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508751210] [2020-10-12 13:16:10,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 13:16:10,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:16:10,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 13:16:10,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:16:10,985 INFO L87 Difference]: Start difference. First operand 1808 states and 2364 transitions. Second operand 6 states. [2020-10-12 13:16:14,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:16:14,407 INFO L93 Difference]: Finished difference Result 4421 states and 5949 transitions. [2020-10-12 13:16:14,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 13:16:14,408 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 182 [2020-10-12 13:16:14,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:16:14,424 INFO L225 Difference]: With dead ends: 4421 [2020-10-12 13:16:14,425 INFO L226 Difference]: Without dead ends: 2807 [2020-10-12 13:16:14,430 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:16:14,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2807 states. [2020-10-12 13:16:14,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2807 to 2395. [2020-10-12 13:16:14,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2395 states. [2020-10-12 13:16:14,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2395 states to 2395 states and 3156 transitions. [2020-10-12 13:16:14,526 INFO L78 Accepts]: Start accepts. Automaton has 2395 states and 3156 transitions. Word has length 182 [2020-10-12 13:16:14,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:16:14,529 INFO L479 AbstractCegarLoop]: Abstraction has 2395 states and 3156 transitions. [2020-10-12 13:16:14,529 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 13:16:14,529 INFO L276 IsEmpty]: Start isEmpty. Operand 2395 states and 3156 transitions. [2020-10-12 13:16:14,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-10-12 13:16:14,537 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:16:14,538 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 13:16:14,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 13:16:14,538 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:16:14,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:16:14,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1626151708, now seen corresponding path program 1 times [2020-10-12 13:16:14,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:16:14,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [690097712] [2020-10-12 13:16:14,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:16:14,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:14,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:14,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:16,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:16,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-12 13:16:16,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:16:16,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1853 [2020-10-12 13:16:16,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:16,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 13:16:16,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:16:16,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 267 [2020-10-12 13:16:16,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:16,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:16:16,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:16,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:16,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:16,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:16:16,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:16:16,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 13:16:16,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:16,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:16:16,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:16:16,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:16:16,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:16:16,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:16:16,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:16,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:16,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:16,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 13:16:16,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:16:16,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-12 13:16:16,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:16,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:16:16,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:16:16,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-12 13:16:16,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:16,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-12 13:16:16,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:16,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:17,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:17,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 13:16:17,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:16:17,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-12 13:16:17,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:17,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 13:16:17,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:16:17,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 13:16:17,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:17,265 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 7 proven. 84 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2020-10-12 13:16:17,266 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [690097712] [2020-10-12 13:16:17,266 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:16:17,266 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:16:17,266 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993757353] [2020-10-12 13:16:17,267 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 13:16:17,269 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:16:17,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 13:16:17,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:16:17,271 INFO L87 Difference]: Start difference. First operand 2395 states and 3156 transitions. Second operand 8 states. [2020-10-12 13:16:21,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:16:21,617 INFO L93 Difference]: Finished difference Result 7670 states and 11466 transitions. [2020-10-12 13:16:21,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 13:16:21,618 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 261 [2020-10-12 13:16:21,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:16:21,657 INFO L225 Difference]: With dead ends: 7670 [2020-10-12 13:16:21,658 INFO L226 Difference]: Without dead ends: 5469 [2020-10-12 13:16:21,667 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-12 13:16:21,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5469 states. [2020-10-12 13:16:21,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5469 to 5380. [2020-10-12 13:16:21,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5380 states. [2020-10-12 13:16:21,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5380 states to 5380 states and 7399 transitions. [2020-10-12 13:16:21,862 INFO L78 Accepts]: Start accepts. Automaton has 5380 states and 7399 transitions. Word has length 261 [2020-10-12 13:16:21,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:16:21,863 INFO L479 AbstractCegarLoop]: Abstraction has 5380 states and 7399 transitions. [2020-10-12 13:16:21,863 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 13:16:21,863 INFO L276 IsEmpty]: Start isEmpty. Operand 5380 states and 7399 transitions. [2020-10-12 13:16:21,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2020-10-12 13:16:21,878 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:16:21,878 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, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:16:21,878 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 13:16:21,879 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:16:21,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:16:21,879 INFO L82 PathProgramCache]: Analyzing trace with hash 255356459, now seen corresponding path program 1 times [2020-10-12 13:16:21,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:16:21,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1648283330] [2020-10-12 13:16:21,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:16:21,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:22,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:22,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:22,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:23,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:25,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:27,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:27,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 326 [2020-10-12 13:16:27,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 13:16:27,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-12 13:16:27,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:27,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:16:27,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 202 [2020-10-12 13:16:27,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-12 13:16:27,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:16:27,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:16:27,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:27,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:27,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:27,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:16:27,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:16:27,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 13:16:27,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:27,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:16:27,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:16:27,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:16:27,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:16:27,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:16:27,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:27,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:27,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:27,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 13:16:27,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:16:27,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-12 13:16:27,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:27,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:16:27,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:16:27,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:16:27,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:16:27,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-12 13:16:27,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:27,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:27,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:27,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-12 13:16:27,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:16:27,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-12 13:16:27,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:27,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:16:27,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:16:27,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-12 13:16:27,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:16:27,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-12 13:16:27,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:27,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:27,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:27,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 13:16:27,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:16:27,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-12 13:16:27,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:27,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:16:27,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:16:27,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-12 13:16:27,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:16:27,760 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 226 proven. 45 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-12 13:16:27,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1648283330] [2020-10-12 13:16:27,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:16:27,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 13:16:27,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437735362] [2020-10-12 13:16:27,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 13:16:27,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:16:27,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 13:16:27,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:16:27,763 INFO L87 Difference]: Start difference. First operand 5380 states and 7399 transitions. Second operand 6 states. [2020-10-12 13:16:30,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:16:30,249 INFO L93 Difference]: Finished difference Result 14828 states and 21361 transitions. [2020-10-12 13:16:30,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 13:16:30,250 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 312 [2020-10-12 13:16:30,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:16:30,306 INFO L225 Difference]: With dead ends: 14828 [2020-10-12 13:16:30,306 INFO L226 Difference]: Without dead ends: 9832 [2020-10-12 13:16:30,324 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:16:30,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9832 states. [2020-10-12 13:16:30,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9832 to 9422. [2020-10-12 13:16:30,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9422 states. [2020-10-12 13:16:30,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9422 states to 9422 states and 13407 transitions. [2020-10-12 13:16:30,645 INFO L78 Accepts]: Start accepts. Automaton has 9422 states and 13407 transitions. Word has length 312 [2020-10-12 13:16:30,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:16:30,646 INFO L479 AbstractCegarLoop]: Abstraction has 9422 states and 13407 transitions. [2020-10-12 13:16:30,646 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 13:16:30,646 INFO L276 IsEmpty]: Start isEmpty. Operand 9422 states and 13407 transitions. [2020-10-12 13:16:30,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2020-10-12 13:16:30,662 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:16:30,663 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, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:16:30,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 13:16:30,663 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:16:30,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:16:30,664 INFO L82 PathProgramCache]: Analyzing trace with hash -299323977, now seen corresponding path program 1 times [2020-10-12 13:16:30,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:16:30,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [630328865] [2020-10-12 13:16:30,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:16:30,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:30,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:30,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:31,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:31,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:32,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:35,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:35,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 336 [2020-10-12 13:16:35,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 13:16:35,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 13:16:35,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:35,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 13:16:35,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:16:35,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-12 13:16:35,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:35,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:16:35,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:35,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:35,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:35,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:16:35,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:16:35,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 13:16:35,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:35,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:16:35,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:16:35,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:16:35,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:35,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:16:35,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:35,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:36,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:36,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:36,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 13:16:36,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:16:36,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 256 [2020-10-12 13:16:36,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:36,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:16:36,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:16:36,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-12 13:16:36,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:16:36,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-12 13:16:36,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:36,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:36,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:36,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:36,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-12 13:16:36,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:16:36,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-12 13:16:36,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:36,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:16:36,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:16:36,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-12 13:16:36,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:16:36,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-12 13:16:36,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:36,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:36,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:36,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 13:16:36,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:16:36,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-12 13:16:36,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:36,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:16:36,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:16:36,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-12 13:16:36,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:16:37,329 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 213 proven. 68 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-12 13:16:37,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [630328865] [2020-10-12 13:16:37,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:16:37,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:16:37,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424676502] [2020-10-12 13:16:37,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 13:16:37,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:16:37,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 13:16:37,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:16:37,335 INFO L87 Difference]: Start difference. First operand 9422 states and 13407 transitions. Second operand 8 states. [2020-10-12 13:16:40,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:16:40,447 INFO L93 Difference]: Finished difference Result 21645 states and 33118 transitions. [2020-10-12 13:16:40,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 13:16:40,449 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 322 [2020-10-12 13:16:40,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:16:40,511 INFO L225 Difference]: With dead ends: 21645 [2020-10-12 13:16:40,511 INFO L226 Difference]: Without dead ends: 12607 [2020-10-12 13:16:40,549 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-12 13:16:40,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12607 states. [2020-10-12 13:16:40,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12607 to 11714. [2020-10-12 13:16:40,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11714 states. [2020-10-12 13:16:40,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11714 states to 11714 states and 15617 transitions. [2020-10-12 13:16:40,891 INFO L78 Accepts]: Start accepts. Automaton has 11714 states and 15617 transitions. Word has length 322 [2020-10-12 13:16:40,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:16:40,892 INFO L479 AbstractCegarLoop]: Abstraction has 11714 states and 15617 transitions. [2020-10-12 13:16:40,892 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 13:16:40,892 INFO L276 IsEmpty]: Start isEmpty. Operand 11714 states and 15617 transitions. [2020-10-12 13:16:40,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-10-12 13:16:40,907 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:16:40,907 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, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:16:40,908 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 13:16:40,908 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:16:40,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:16:40,908 INFO L82 PathProgramCache]: Analyzing trace with hash 531462255, now seen corresponding path program 1 times [2020-10-12 13:16:40,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:16:40,909 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2024361818] [2020-10-12 13:16:40,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:16:40,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:41,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:41,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:41,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:41,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:43,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:46,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:46,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 344 [2020-10-12 13:16:46,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 13:16:46,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-12 13:16:46,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:46,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:16:46,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 202 [2020-10-12 13:16:46,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-12 13:16:46,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:46,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:16:46,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:46,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:46,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:46,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:16:46,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:16:46,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 13:16:46,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:46,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:16:46,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:16:46,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:16:46,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:46,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:16:46,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:46,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:46,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:46,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 13:16:46,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:16:46,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-12 13:16:46,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:46,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:16:46,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:16:46,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:16:46,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:46,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-12 13:16:46,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:46,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:46,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:46,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-12 13:16:46,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:16:46,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-12 13:16:46,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:46,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:16:46,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:16:46,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-12 13:16:46,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:46,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-12 13:16:46,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:46,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:46,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:46,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:46,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-12 13:16:46,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:16:46,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-12 13:16:46,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:46,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:16:46,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:16:46,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-12 13:16:46,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:46,690 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 247 proven. 45 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-12 13:16:46,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2024361818] [2020-10-12 13:16:46,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:16:46,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:16:46,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270243635] [2020-10-12 13:16:46,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:16:46,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:16:46,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:16:46,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:16:46,694 INFO L87 Difference]: Start difference. First operand 11714 states and 15617 transitions. Second operand 7 states. [2020-10-12 13:16:50,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:16:50,192 INFO L93 Difference]: Finished difference Result 23993 states and 32109 transitions. [2020-10-12 13:16:50,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:16:50,193 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 330 [2020-10-12 13:16:50,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:16:50,254 INFO L225 Difference]: With dead ends: 23993 [2020-10-12 13:16:50,254 INFO L226 Difference]: Without dead ends: 14201 [2020-10-12 13:16:50,279 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:16:50,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14201 states. [2020-10-12 13:16:50,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14201 to 12478. [2020-10-12 13:16:50,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12478 states. [2020-10-12 13:16:50,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12478 states to 12478 states and 16066 transitions. [2020-10-12 13:16:50,553 INFO L78 Accepts]: Start accepts. Automaton has 12478 states and 16066 transitions. Word has length 330 [2020-10-12 13:16:50,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:16:50,554 INFO L479 AbstractCegarLoop]: Abstraction has 12478 states and 16066 transitions. [2020-10-12 13:16:50,554 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:16:50,554 INFO L276 IsEmpty]: Start isEmpty. Operand 12478 states and 16066 transitions. [2020-10-12 13:16:50,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2020-10-12 13:16:50,571 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:16:50,571 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, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:16:50,572 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 13:16:50,572 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:16:50,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:16:50,572 INFO L82 PathProgramCache]: Analyzing trace with hash -1086865979, now seen corresponding path program 1 times [2020-10-12 13:16:50,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:16:50,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1331008584] [2020-10-12 13:16:50,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:16:50,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:50,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:50,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:50,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:51,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:54,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:54,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 355 [2020-10-12 13:16:54,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 13:16:54,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4048 [2020-10-12 13:16:54,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:54,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:16:54,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-12 13:16:54,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-12 13:16:54,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:54,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:16:54,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:54,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:54,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:54,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:16:54,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:16:54,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:16:54,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:54,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:16:54,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:16:54,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:16:54,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:54,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:16:54,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:54,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:54,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:54,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:16:54,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:16:54,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-12 13:16:54,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:54,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:16:54,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:16:54,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:16:54,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:54,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-12 13:16:54,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:54,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:55,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:55,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 13:16:55,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:16:55,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-12 13:16:55,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:55,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:16:55,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:16:55,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-12 13:16:55,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:55,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-10-12 13:16:55,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:55,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:55,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:55,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:55,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-12 13:16:55,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:16:55,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-12 13:16:55,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:55,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:16:55,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:16:55,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-12 13:16:55,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:55,218 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 243 proven. 45 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-12 13:16:55,219 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1331008584] [2020-10-12 13:16:55,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:16:55,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 13:16:55,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599093917] [2020-10-12 13:16:55,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 13:16:55,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:16:55,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 13:16:55,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:16:55,221 INFO L87 Difference]: Start difference. First operand 12478 states and 16066 transitions. Second operand 6 states. [2020-10-12 13:16:57,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:16:57,012 INFO L93 Difference]: Finished difference Result 14759 states and 19098 transitions. [2020-10-12 13:16:57,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 13:16:57,013 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 341 [2020-10-12 13:16:57,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:16:57,060 INFO L225 Difference]: With dead ends: 14759 [2020-10-12 13:16:57,060 INFO L226 Difference]: Without dead ends: 14757 [2020-10-12 13:16:57,068 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:16:57,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14757 states. [2020-10-12 13:16:57,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14757 to 14354. [2020-10-12 13:16:57,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14354 states. [2020-10-12 13:16:57,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14354 states to 14354 states and 18520 transitions. [2020-10-12 13:16:57,403 INFO L78 Accepts]: Start accepts. Automaton has 14354 states and 18520 transitions. Word has length 341 [2020-10-12 13:16:57,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:16:57,404 INFO L479 AbstractCegarLoop]: Abstraction has 14354 states and 18520 transitions. [2020-10-12 13:16:57,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 13:16:57,405 INFO L276 IsEmpty]: Start isEmpty. Operand 14354 states and 18520 transitions. [2020-10-12 13:16:57,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2020-10-12 13:16:57,421 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:16:57,421 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:16:57,422 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 13:16:57,422 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:16:57,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:16:57,423 INFO L82 PathProgramCache]: Analyzing trace with hash 259572391, now seen corresponding path program 1 times [2020-10-12 13:16:57,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:16:57,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1360052643] [2020-10-12 13:16:57,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:16:57,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:57,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:57,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:59,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:59,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 384 [2020-10-12 13:16:59,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:16:59,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1824 [2020-10-12 13:16:59,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:59,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:16:59,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-12 13:16:59,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-12 13:16:59,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:59,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:16:59,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:59,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:59,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:59,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:16:59,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:16:59,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:16:59,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:59,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:16:59,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:16:59,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:16:59,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:59,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:16:59,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:59,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:59,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:59,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 13:16:59,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:16:59,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-12 13:16:59,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:59,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:16:59,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:16:59,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-12 13:16:59,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:59,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-12 13:16:59,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:59,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:59,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:59,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 13:16:59,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:16:59,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-12 13:16:59,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:59,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:16:59,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:16:59,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-12 13:16:59,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:59,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-10-12 13:16:59,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:16:59,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:16:59,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:16:59,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 13:16:59,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:16:59,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-12 13:16:59,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:16:59,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:16:59,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-12 13:16:59,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:16:59,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:16:59,874 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 242 proven. 93 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-12 13:16:59,874 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1360052643] [2020-10-12 13:16:59,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:16:59,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:16:59,875 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372014206] [2020-10-12 13:16:59,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:16:59,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:16:59,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:16:59,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:16:59,876 INFO L87 Difference]: Start difference. First operand 14354 states and 18520 transitions. Second operand 7 states. [2020-10-12 13:17:03,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:17:03,098 INFO L93 Difference]: Finished difference Result 30070 states and 38998 transitions. [2020-10-12 13:17:03,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 13:17:03,099 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 370 [2020-10-12 13:17:03,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:17:03,149 INFO L225 Difference]: With dead ends: 30070 [2020-10-12 13:17:03,149 INFO L226 Difference]: Without dead ends: 15907 [2020-10-12 13:17:03,181 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-12 13:17:03,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15907 states. [2020-10-12 13:17:03,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15907 to 15703. [2020-10-12 13:17:03,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15703 states. [2020-10-12 13:17:03,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15703 states to 15703 states and 20084 transitions. [2020-10-12 13:17:03,516 INFO L78 Accepts]: Start accepts. Automaton has 15703 states and 20084 transitions. Word has length 370 [2020-10-12 13:17:03,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:17:03,517 INFO L479 AbstractCegarLoop]: Abstraction has 15703 states and 20084 transitions. [2020-10-12 13:17:03,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:17:03,518 INFO L276 IsEmpty]: Start isEmpty. Operand 15703 states and 20084 transitions. [2020-10-12 13:17:03,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2020-10-12 13:17:03,542 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:17:03,543 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:17:03,543 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 13:17:03,543 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:17:03,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:17:03,544 INFO L82 PathProgramCache]: Analyzing trace with hash -174309463, now seen corresponding path program 1 times [2020-10-12 13:17:03,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:17:03,544 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1444057016] [2020-10-12 13:17:03,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:17:03,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:03,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:03,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:05,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:05,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 393 [2020-10-12 13:17:05,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:17:05,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2141 [2020-10-12 13:17:05,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:05,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:17:05,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 246 [2020-10-12 13:17:05,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-12 13:17:05,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:17:05,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:17:05,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:05,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:05,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:05,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:17:05,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:17:05,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:17:05,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:05,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:17:05,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:17:05,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:17:05,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:17:05,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:17:05,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:05,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:05,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:05,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:17:05,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:17:05,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-12 13:17:05,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:05,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:17:05,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:17:05,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:17:05,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:17:05,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-12 13:17:05,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:05,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:06,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:06,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-12 13:17:06,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:17:06,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-10-12 13:17:06,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:06,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:17:06,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:17:06,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-12 13:17:06,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:17:06,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-10-12 13:17:06,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:06,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:06,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:06,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 13:17:06,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:17:06,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-12 13:17:06,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:06,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:17:06,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:17:06,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 13:17:06,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:17:06,561 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 319 proven. 2 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2020-10-12 13:17:06,561 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1444057016] [2020-10-12 13:17:06,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:17:06,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:17:06,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871730420] [2020-10-12 13:17:06,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:17:06,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:17:06,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:17:06,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:17:06,564 INFO L87 Difference]: Start difference. First operand 15703 states and 20084 transitions. Second operand 7 states. [2020-10-12 13:17:10,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:17:10,335 INFO L93 Difference]: Finished difference Result 35233 states and 45522 transitions. [2020-10-12 13:17:10,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 13:17:10,335 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 379 [2020-10-12 13:17:10,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:17:10,393 INFO L225 Difference]: With dead ends: 35233 [2020-10-12 13:17:10,393 INFO L226 Difference]: Without dead ends: 19527 [2020-10-12 13:17:10,418 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:17:10,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19527 states. [2020-10-12 13:17:10,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19527 to 17242. [2020-10-12 13:17:10,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17242 states. [2020-10-12 13:17:10,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17242 states to 17242 states and 21670 transitions. [2020-10-12 13:17:10,766 INFO L78 Accepts]: Start accepts. Automaton has 17242 states and 21670 transitions. Word has length 379 [2020-10-12 13:17:10,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:17:10,767 INFO L479 AbstractCegarLoop]: Abstraction has 17242 states and 21670 transitions. [2020-10-12 13:17:10,767 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:17:10,767 INFO L276 IsEmpty]: Start isEmpty. Operand 17242 states and 21670 transitions. [2020-10-12 13:17:10,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2020-10-12 13:17:10,786 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:17:10,787 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:17:10,787 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 13:17:10,788 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:17:10,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:17:10,788 INFO L82 PathProgramCache]: Analyzing trace with hash 1581989085, now seen corresponding path program 1 times [2020-10-12 13:17:10,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:17:10,789 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [495632174] [2020-10-12 13:17:10,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:17:10,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:10,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:11,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:13,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:13,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 398 [2020-10-12 13:17:13,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:17:13,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2287 [2020-10-12 13:17:13,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:13,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:17:13,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 251 [2020-10-12 13:17:13,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-12 13:17:13,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:17:13,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:17:13,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:13,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:13,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:13,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:17:13,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:17:13,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 13:17:13,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:13,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:17:13,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:17:13,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:17:13,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:17:13,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:17:13,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:13,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:13,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:13,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:17:13,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:17:13,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-12 13:17:13,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:13,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:17:13,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:17:13,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:17:13,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:17:13,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-12 13:17:13,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:13,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:13,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:13,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-12 13:17:13,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:17:13,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-12 13:17:13,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:13,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:17:13,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:17:13,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-12 13:17:13,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:17:13,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-12 13:17:13,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:13,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:13,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:13,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 13:17:13,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:17:13,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-12 13:17:13,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:13,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:17:13,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:17:13,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 13:17:13,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:17:13,625 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 319 proven. 2 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2020-10-12 13:17:13,626 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [495632174] [2020-10-12 13:17:13,626 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:17:13,626 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:17:13,626 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058111622] [2020-10-12 13:17:13,627 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:17:13,627 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:17:13,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:17:13,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:17:13,628 INFO L87 Difference]: Start difference. First operand 17242 states and 21670 transitions. Second operand 7 states. [2020-10-12 13:17:16,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:17:16,017 INFO L93 Difference]: Finished difference Result 33374 states and 41937 transitions. [2020-10-12 13:17:16,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 13:17:16,019 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 384 [2020-10-12 13:17:16,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:17:16,067 INFO L225 Difference]: With dead ends: 33374 [2020-10-12 13:17:16,067 INFO L226 Difference]: Without dead ends: 18624 [2020-10-12 13:17:16,190 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-12 13:17:16,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18624 states. [2020-10-12 13:17:16,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18624 to 17428. [2020-10-12 13:17:16,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17428 states. [2020-10-12 13:17:16,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17428 states to 17428 states and 21721 transitions. [2020-10-12 13:17:16,492 INFO L78 Accepts]: Start accepts. Automaton has 17428 states and 21721 transitions. Word has length 384 [2020-10-12 13:17:16,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:17:16,493 INFO L479 AbstractCegarLoop]: Abstraction has 17428 states and 21721 transitions. [2020-10-12 13:17:16,493 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:17:16,493 INFO L276 IsEmpty]: Start isEmpty. Operand 17428 states and 21721 transitions. [2020-10-12 13:17:16,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2020-10-12 13:17:16,524 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:17:16,525 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, 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, 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] [2020-10-12 13:17:16,525 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 13:17:16,525 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:17:16,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:17:16,526 INFO L82 PathProgramCache]: Analyzing trace with hash 1628692186, now seen corresponding path program 1 times [2020-10-12 13:17:16,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:17:16,526 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1056927174] [2020-10-12 13:17:16,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:17:16,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:16,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:16,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:17,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:20,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:21,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:21,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:21,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 487 [2020-10-12 13:17:21,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 13:17:21,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 13:17:21,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:21,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 13:17:21,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 251 [2020-10-12 13:17:21,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 235 [2020-10-12 13:17:21,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:17:21,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:17:21,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:21,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:21,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:21,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:17:21,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:17:21,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:17:21,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:21,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:17:21,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:17:21,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:17:21,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:17:21,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:17:21,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:21,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:21,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:21,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:17:21,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:17:21,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 13:17:21,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:21,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:17:21,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:17:21,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:17:21,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:17:21,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-12 13:17:21,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:21,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:21,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:21,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-12 13:17:21,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:17:21,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-12 13:17:21,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:21,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:17:21,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:17:21,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-12 13:17:21,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:17:21,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-12 13:17:21,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:21,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:21,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:22,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:22,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 13:17:22,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:17:22,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-12 13:17:22,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:22,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:17:22,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:17:22,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-12 13:17:22,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:17:22,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2020-10-12 13:17:22,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:22,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:22,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:22,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 13:17:22,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:17:22,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-12 13:17:22,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:22,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 13:17:22,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:17:22,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 13:17:22,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:17:22,593 INFO L134 CoverageAnalysis]: Checked inductivity of 733 backedges. 441 proven. 178 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-10-12 13:17:22,593 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1056927174] [2020-10-12 13:17:22,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:17:22,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 13:17:22,594 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876038855] [2020-10-12 13:17:22,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 13:17:22,596 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:17:22,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 13:17:22,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-12 13:17:22,597 INFO L87 Difference]: Start difference. First operand 17428 states and 21721 transitions. Second operand 9 states. [2020-10-12 13:17:27,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:17:27,734 INFO L93 Difference]: Finished difference Result 35504 states and 44808 transitions. [2020-10-12 13:17:27,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 13:17:27,735 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 471 [2020-10-12 13:17:27,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:17:27,789 INFO L225 Difference]: With dead ends: 35504 [2020-10-12 13:17:27,789 INFO L226 Difference]: Without dead ends: 20580 [2020-10-12 13:17:27,811 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-10-12 13:17:27,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20580 states. [2020-10-12 13:17:28,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20580 to 20306. [2020-10-12 13:17:28,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20306 states. [2020-10-12 13:17:28,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20306 states to 20306 states and 24932 transitions. [2020-10-12 13:17:28,173 INFO L78 Accepts]: Start accepts. Automaton has 20306 states and 24932 transitions. Word has length 471 [2020-10-12 13:17:28,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:17:28,174 INFO L479 AbstractCegarLoop]: Abstraction has 20306 states and 24932 transitions. [2020-10-12 13:17:28,174 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 13:17:28,174 INFO L276 IsEmpty]: Start isEmpty. Operand 20306 states and 24932 transitions. [2020-10-12 13:17:28,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2020-10-12 13:17:28,207 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:17:28,208 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 13:17:28,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 13:17:28,208 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:17:28,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:17:28,208 INFO L82 PathProgramCache]: Analyzing trace with hash 1523846542, now seen corresponding path program 1 times [2020-10-12 13:17:28,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:17:28,213 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [794854806] [2020-10-12 13:17:28,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:17:28,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:28,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:28,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:29,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:29,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:33,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:33,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 521 [2020-10-12 13:17:33,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 13:17:33,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-12 13:17:33,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:33,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 13:17:33,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-12 13:17:33,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 307 [2020-10-12 13:17:33,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:17:33,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:17:33,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:33,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:33,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:33,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:17:33,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:17:33,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:17:33,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:33,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:17:33,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:17:33,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:17:33,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:17:33,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:17:33,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:33,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:33,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:33,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:17:33,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:17:33,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 13:17:33,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:33,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:17:33,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:17:33,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:17:33,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:17:33,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-12 13:17:33,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:33,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:33,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:33,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 13:17:33,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:17:33,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-12 13:17:33,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:33,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:17:33,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:17:33,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-12 13:17:33,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:17:33,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-10-12 13:17:33,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:33,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:33,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:33,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-12 13:17:33,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:17:33,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-12 13:17:33,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:33,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:17:33,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:17:33,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-12 13:17:33,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:17:33,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2020-10-12 13:17:33,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:33,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:33,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:33,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 13:17:33,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:17:33,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-12 13:17:33,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:33,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 13:17:33,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:17:33,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 13:17:33,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:17:34,033 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 450 proven. 90 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2020-10-12 13:17:34,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [794854806] [2020-10-12 13:17:34,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:17:34,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 13:17:34,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113354326] [2020-10-12 13:17:34,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 13:17:34,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:17:34,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 13:17:34,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:17:34,035 INFO L87 Difference]: Start difference. First operand 20306 states and 24932 transitions. Second operand 8 states. [2020-10-12 13:17:37,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:17:37,975 INFO L93 Difference]: Finished difference Result 46576 states and 57167 transitions. [2020-10-12 13:17:37,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 13:17:37,976 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 505 [2020-10-12 13:17:37,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:17:38,034 INFO L225 Difference]: With dead ends: 46576 [2020-10-12 13:17:38,034 INFO L226 Difference]: Without dead ends: 28774 [2020-10-12 13:17:38,060 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:17:38,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28774 states. [2020-10-12 13:17:38,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28774 to 28340. [2020-10-12 13:17:38,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28340 states. [2020-10-12 13:17:38,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28340 states to 28340 states and 34612 transitions. [2020-10-12 13:17:38,856 INFO L78 Accepts]: Start accepts. Automaton has 28340 states and 34612 transitions. Word has length 505 [2020-10-12 13:17:38,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:17:38,857 INFO L479 AbstractCegarLoop]: Abstraction has 28340 states and 34612 transitions. [2020-10-12 13:17:38,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 13:17:38,857 INFO L276 IsEmpty]: Start isEmpty. Operand 28340 states and 34612 transitions. [2020-10-12 13:17:38,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2020-10-12 13:17:38,893 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:17:38,894 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-12 13:17:38,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 13:17:38,894 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:17:38,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:17:38,895 INFO L82 PathProgramCache]: Analyzing trace with hash 362693242, now seen corresponding path program 1 times [2020-10-12 13:17:38,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:17:38,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [749415978] [2020-10-12 13:17:38,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:17:39,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:39,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:39,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:39,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:41,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:44,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:44,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 545 [2020-10-12 13:17:44,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 13:17:44,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 13:17:44,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:44,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 13:17:44,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 252 [2020-10-12 13:17:44,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 292 [2020-10-12 13:17:44,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:17:44,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:17:44,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:44,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:44,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:44,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:17:44,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:17:44,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:17:44,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:44,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:17:44,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:17:44,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:17:44,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:17:44,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:17:44,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:44,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:44,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:44,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:17:44,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:17:44,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-12 13:17:44,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:44,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:17:44,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:17:44,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:17:44,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:17:44,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-12 13:17:44,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:44,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:44,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:44,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 13:17:44,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:17:44,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-12 13:17:44,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:44,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:17:44,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:17:44,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-12 13:17:44,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:17:44,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-10-12 13:17:44,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:44,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:44,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:44,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-12 13:17:44,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:17:44,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-12 13:17:44,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:44,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:17:44,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:17:44,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-12 13:17:44,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:17:44,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2020-10-12 13:17:44,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:44,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:44,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:44,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 13:17:44,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:17:44,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-12 13:17:44,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:44,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 13:17:44,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:17:44,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 13:17:44,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:17:45,012 INFO L134 CoverageAnalysis]: Checked inductivity of 805 backedges. 505 proven. 185 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-12 13:17:45,012 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [749415978] [2020-10-12 13:17:45,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:17:45,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 13:17:45,013 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000742887] [2020-10-12 13:17:45,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 13:17:45,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:17:45,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 13:17:45,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-12 13:17:45,014 INFO L87 Difference]: Start difference. First operand 28340 states and 34612 transitions. Second operand 9 states. [2020-10-12 13:17:50,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:17:50,224 INFO L93 Difference]: Finished difference Result 63194 states and 77981 transitions. [2020-10-12 13:17:50,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 13:17:50,225 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 529 [2020-10-12 13:17:50,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:17:50,296 INFO L225 Difference]: With dead ends: 63194 [2020-10-12 13:17:50,296 INFO L226 Difference]: Without dead ends: 35237 [2020-10-12 13:17:50,327 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-10-12 13:17:50,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35237 states. [2020-10-12 13:17:50,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35237 to 32792. [2020-10-12 13:17:50,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32792 states. [2020-10-12 13:17:50,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32792 states to 32792 states and 39383 transitions. [2020-10-12 13:17:50,861 INFO L78 Accepts]: Start accepts. Automaton has 32792 states and 39383 transitions. Word has length 529 [2020-10-12 13:17:50,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:17:50,862 INFO L479 AbstractCegarLoop]: Abstraction has 32792 states and 39383 transitions. [2020-10-12 13:17:50,862 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 13:17:50,862 INFO L276 IsEmpty]: Start isEmpty. Operand 32792 states and 39383 transitions. [2020-10-12 13:17:50,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 672 [2020-10-12 13:17:50,915 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:17:50,916 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, 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, 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, 3, 3, 3, 3, 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] [2020-10-12 13:17:50,916 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 13:17:50,917 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:17:50,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:17:50,917 INFO L82 PathProgramCache]: Analyzing trace with hash -1483644133, now seen corresponding path program 1 times [2020-10-12 13:17:50,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:17:50,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [231618795] [2020-10-12 13:17:50,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:17:51,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:51,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:51,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:53,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:56,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:56,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 689 [2020-10-12 13:17:56,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:17:56,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-12 13:17:56,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:56,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 13:17:56,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 542 [2020-10-12 13:17:56,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-12 13:17:56,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:17:56,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:17:56,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:56,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:56,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:56,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:17:56,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:17:56,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:17:56,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:56,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:17:56,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:17:56,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:17:56,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:17:56,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:17:56,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:56,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:56,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:56,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 13:17:56,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:17:56,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 13:17:56,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:56,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:17:56,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:17:56,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:17:56,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:17:56,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-12 13:17:56,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:56,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:56,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:56,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:17:56,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:17:56,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 13:17:56,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:56,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:17:56,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:17:56,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:17:56,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:17:56,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-12 13:17:56,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:56,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:56,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:56,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-12 13:17:56,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:17:56,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 13:17:56,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:56,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:17:56,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:17:56,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:17:56,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:17:56,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2020-10-12 13:17:56,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:56,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:56,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:56,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-12 13:17:56,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:17:56,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-12 13:17:56,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:56,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:17:56,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:17:56,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-12 13:17:56,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:17:56,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 534 [2020-10-12 13:17:56,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:56,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:56,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:56,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 13:17:56,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:17:56,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-12 13:17:56,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:56,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 13:17:56,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:17:56,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 13:17:56,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:17:57,302 INFO L134 CoverageAnalysis]: Checked inductivity of 1315 backedges. 550 proven. 51 refuted. 0 times theorem prover too weak. 714 trivial. 0 not checked. [2020-10-12 13:17:57,302 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [231618795] [2020-10-12 13:17:57,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:17:57,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 13:17:57,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987751997] [2020-10-12 13:17:57,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 13:17:57,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:17:57,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 13:17:57,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:17:57,305 INFO L87 Difference]: Start difference. First operand 32792 states and 39383 transitions. Second operand 8 states. [2020-10-12 13:18:04,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:18:04,057 INFO L93 Difference]: Finished difference Result 69788 states and 83917 transitions. [2020-10-12 13:18:04,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 13:18:04,059 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 671 [2020-10-12 13:18:04,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:18:04,165 INFO L225 Difference]: With dead ends: 69788 [2020-10-12 13:18:04,165 INFO L226 Difference]: Without dead ends: 37190 [2020-10-12 13:18:04,204 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2020-10-12 13:18:04,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37190 states. [2020-10-12 13:18:04,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37190 to 33798. [2020-10-12 13:18:04,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33798 states. [2020-10-12 13:18:04,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33798 states to 33798 states and 40146 transitions. [2020-10-12 13:18:04,767 INFO L78 Accepts]: Start accepts. Automaton has 33798 states and 40146 transitions. Word has length 671 [2020-10-12 13:18:04,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:18:04,769 INFO L479 AbstractCegarLoop]: Abstraction has 33798 states and 40146 transitions. [2020-10-12 13:18:04,769 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 13:18:04,769 INFO L276 IsEmpty]: Start isEmpty. Operand 33798 states and 40146 transitions. [2020-10-12 13:18:04,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 759 [2020-10-12 13:18:04,851 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:18:04,852 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, 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, 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, 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] [2020-10-12 13:18:04,852 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 13:18:04,852 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:18:04,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:18:04,853 INFO L82 PathProgramCache]: Analyzing trace with hash -1870495012, now seen corresponding path program 1 times [2020-10-12 13:18:04,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:18:04,854 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2029399214] [2020-10-12 13:18:04,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:18:05,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:18:05,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:05,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:07,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:08,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:09,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:10,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:18:10,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 778 [2020-10-12 13:18:10,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 13:18:10,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5063 [2020-10-12 13:18:10,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:18:10,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 13:18:10,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-12 13:18:10,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 373 [2020-10-12 13:18:10,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:18:10,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:18:10,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:18:10,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:10,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:18:10,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:18:10,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:18:10,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:18:10,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:18:10,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:18:10,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:18:10,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:18:10,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:18:10,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:18:10,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:18:10,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:10,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:18:10,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 13:18:10,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:18:10,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-12 13:18:10,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:18:10,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:18:10,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:18:10,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:18:10,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:18:10,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-12 13:18:10,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:18:10,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:10,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:18:10,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:18:10,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:18:10,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-12 13:18:10,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:18:10,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:18:10,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:18:10,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-12 13:18:10,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:18:10,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-12 13:18:10,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:18:10,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:10,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:18:10,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-12 13:18:10,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:18:10,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-12 13:18:10,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:18:10,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:18:10,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:18:10,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-12 13:18:10,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:18:10,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2020-10-12 13:18:10,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:18:10,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:11,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:18:11,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-12 13:18:11,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:18:11,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 352 [2020-10-12 13:18:11,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:18:11,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 13:18:11,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:18:11,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-12 13:18:11,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:18:11,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 534 [2020-10-12 13:18:11,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:18:11,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:11,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:18:11,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 13:18:11,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:18:11,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-12 13:18:11,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:18:11,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:18:11,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:18:11,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-12 13:18:11,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:18:11,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 621 [2020-10-12 13:18:11,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:18:11,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:11,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:18:11,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 13:18:11,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:18:11,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-12 13:18:11,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:18:11,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:18:11,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-12 13:18:11,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:18:11,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:18:12,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1794 backedges. 928 proven. 282 refuted. 0 times theorem prover too weak. 584 trivial. 0 not checked. [2020-10-12 13:18:12,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2029399214] [2020-10-12 13:18:12,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:18:12,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 13:18:12,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733357604] [2020-10-12 13:18:12,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 13:18:12,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:18:12,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 13:18:12,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-12 13:18:12,707 INFO L87 Difference]: Start difference. First operand 33798 states and 40146 transitions. Second operand 9 states. [2020-10-12 13:18:24,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:18:24,159 INFO L93 Difference]: Finished difference Result 84561 states and 100827 transitions. [2020-10-12 13:18:24,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 13:18:24,161 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 758 [2020-10-12 13:18:24,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:18:24,285 INFO L225 Difference]: With dead ends: 84561 [2020-10-12 13:18:24,286 INFO L226 Difference]: Without dead ends: 51147 [2020-10-12 13:18:24,329 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=128, Invalid=472, Unknown=0, NotChecked=0, Total=600 [2020-10-12 13:18:24,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51147 states. [2020-10-12 13:18:25,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51147 to 46470. [2020-10-12 13:18:25,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46470 states. [2020-10-12 13:18:25,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46470 states to 46470 states and 55303 transitions. [2020-10-12 13:18:25,172 INFO L78 Accepts]: Start accepts. Automaton has 46470 states and 55303 transitions. Word has length 758 [2020-10-12 13:18:25,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:18:25,174 INFO L479 AbstractCegarLoop]: Abstraction has 46470 states and 55303 transitions. [2020-10-12 13:18:25,174 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 13:18:25,174 INFO L276 IsEmpty]: Start isEmpty. Operand 46470 states and 55303 transitions. [2020-10-12 13:18:25,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 792 [2020-10-12 13:18:25,272 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:18:25,274 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, 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, 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, 2, 2, 2, 2, 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] [2020-10-12 13:18:25,274 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 13:18:25,274 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:18:25,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:18:25,275 INFO L82 PathProgramCache]: Analyzing trace with hash 1543647603, now seen corresponding path program 1 times [2020-10-12 13:18:25,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:18:25,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [628477054] [2020-10-12 13:18:25,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:18:25,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:18:25,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:25,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:25,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:27,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:27,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:27,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:28,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:29,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:30,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:30,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:18:30,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 811 [2020-10-12 13:18:30,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 13:18:30,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-12 13:18:30,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:18:30,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:18:30,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 414 [2020-10-12 13:18:30,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-10-12 13:18:30,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:18:30,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:18:30,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:18:30,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:30,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:18:30,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:18:30,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:18:30,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:18:30,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:18:30,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:18:30,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:18:30,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:18:30,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:18:30,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:18:30,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:18:30,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:30,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:18:30,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:18:30,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:18:30,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-12 13:18:30,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:18:30,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:18:30,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:18:30,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:18:30,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:18:30,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-12 13:18:30,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:18:30,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:30,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:31,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:18:31,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-12 13:18:31,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:18:31,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-10-12 13:18:31,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:18:31,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:18:31,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 152 [2020-10-12 13:18:31,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:18:31,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:18:31,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-10-12 13:18:31,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:18:31,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:31,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:18:31,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-12 13:18:31,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:18:31,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-12 13:18:31,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:18:31,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:18:31,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:18:31,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-12 13:18:31,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:18:31,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2020-10-12 13:18:31,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:18:31,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:31,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:18:31,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-12 13:18:31,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:18:31,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 334 [2020-10-12 13:18:31,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:18:31,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:18:31,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:18:31,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-12 13:18:31,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:18:32,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2020-10-12 13:18:32,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:18:32,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:32,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:18:32,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 13:18:32,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:18:32,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-12 13:18:32,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:18:32,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:18:32,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-12 13:18:32,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:18:32,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:18:32,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 654 [2020-10-12 13:18:32,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:18:32,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:32,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:18:32,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 13:18:32,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:18:32,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-12 13:18:32,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:18:32,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:18:32,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-12 13:18:32,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:18:32,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:18:32,572 INFO L134 CoverageAnalysis]: Checked inductivity of 1820 backedges. 683 proven. 185 refuted. 0 times theorem prover too weak. 952 trivial. 0 not checked. [2020-10-12 13:18:32,572 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [628477054] [2020-10-12 13:18:32,572 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:18:32,572 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 13:18:32,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867906275] [2020-10-12 13:18:32,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 13:18:32,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:18:32,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 13:18:32,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:18:32,575 INFO L87 Difference]: Start difference. First operand 46470 states and 55303 transitions. Second operand 8 states. [2020-10-12 13:18:38,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:18:38,154 INFO L93 Difference]: Finished difference Result 96951 states and 115594 transitions. [2020-10-12 13:18:38,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 13:18:38,156 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 791 [2020-10-12 13:18:38,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:18:38,288 INFO L225 Difference]: With dead ends: 96951 [2020-10-12 13:18:38,289 INFO L226 Difference]: Without dead ends: 51246 [2020-10-12 13:18:38,343 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2020-10-12 13:18:38,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51246 states. [2020-10-12 13:18:39,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51246 to 49836. [2020-10-12 13:18:39,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49836 states. [2020-10-12 13:18:39,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49836 states to 49836 states and 58508 transitions. [2020-10-12 13:18:39,084 INFO L78 Accepts]: Start accepts. Automaton has 49836 states and 58508 transitions. Word has length 791 [2020-10-12 13:18:39,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:18:39,085 INFO L479 AbstractCegarLoop]: Abstraction has 49836 states and 58508 transitions. [2020-10-12 13:18:39,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 13:18:39,085 INFO L276 IsEmpty]: Start isEmpty. Operand 49836 states and 58508 transitions. [2020-10-12 13:18:39,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 820 [2020-10-12 13:18:39,161 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:18:39,162 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, 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, 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, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-12 13:18:39,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 13:18:39,163 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:18:39,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:18:39,163 INFO L82 PathProgramCache]: Analyzing trace with hash -1710822424, now seen corresponding path program 1 times [2020-10-12 13:18:39,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:18:39,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1026749117] [2020-10-12 13:18:39,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:18:39,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:18:39,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:39,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:40,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:41,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:44,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:18:44,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 839 [2020-10-12 13:18:44,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 13:18:44,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-12 13:18:44,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:18:44,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 13:18:44,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 546 [2020-10-12 13:18:44,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 292 [2020-10-12 13:18:44,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:18:44,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:18:44,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:18:44,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:44,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:18:44,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:18:44,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:18:44,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 13:18:44,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:18:44,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:18:44,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:18:44,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:18:44,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:18:44,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:18:44,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:18:44,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:44,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:18:44,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 13:18:44,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:18:44,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-12 13:18:44,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:18:44,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:18:44,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:18:44,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:18:44,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:18:44,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-12 13:18:44,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:18:44,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:44,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:18:44,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:18:44,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:18:44,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-12 13:18:44,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:18:44,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:18:44,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:18:44,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:18:44,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:18:44,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-12 13:18:44,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:18:44,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:44,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:18:44,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-12 13:18:44,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:18:44,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-12 13:18:44,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:18:44,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:18:44,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:18:44,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:18:44,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:18:44,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2020-10-12 13:18:45,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:18:45,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:45,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:18:45,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-12 13:18:45,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:18:45,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-10-12 13:18:45,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:18:45,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:18:45,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:18:45,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-12 13:18:45,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:18:45,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-12 13:18:45,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:18:45,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:45,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:18:45,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-12 13:18:45,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:18:45,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 280 [2020-10-12 13:18:45,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:18:45,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:18:45,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:18:45,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-12 13:18:45,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-12 13:18:45,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 682 [2020-10-12 13:18:45,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:18:45,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:46,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:18:46,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 13:18:46,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:18:46,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 340 [2020-10-12 13:18:46,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:18:46,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 13:18:46,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:18:46,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 13:18:46,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:18:46,795 INFO L134 CoverageAnalysis]: Checked inductivity of 1964 backedges. 1062 proven. 92 refuted. 0 times theorem prover too weak. 810 trivial. 0 not checked. [2020-10-12 13:18:46,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1026749117] [2020-10-12 13:18:46,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:18:46,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 13:18:46,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103547372] [2020-10-12 13:18:46,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 13:18:46,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:18:46,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 13:18:46,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:18:46,798 INFO L87 Difference]: Start difference. First operand 49836 states and 58508 transitions. Second operand 8 states. [2020-10-12 13:18:53,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:18:53,082 INFO L93 Difference]: Finished difference Result 107532 states and 127030 transitions. [2020-10-12 13:18:53,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 13:18:53,084 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 819 [2020-10-12 13:18:53,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:18:53,084 INFO L225 Difference]: With dead ends: 107532 [2020-10-12 13:18:53,084 INFO L226 Difference]: Without dead ends: 0 [2020-10-12 13:18:53,143 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-12 13:18:53,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-12 13:18:53,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-12 13:18:53,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-12 13:18:53,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-12 13:18:53,144 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 819 [2020-10-12 13:18:53,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:18:53,145 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-12 13:18:53,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 13:18:53,145 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-12 13:18:53,145 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-12 13:18:53,145 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-12 13:18:53,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-12 13:19:00,084 WARN L193 SmtUtils]: Spent 3.42 s on a formula simplification. DAG size of input: 1032 DAG size of output: 686 [2020-10-12 13:19:03,363 WARN L193 SmtUtils]: Spent 3.27 s on a formula simplification. DAG size of input: 1032 DAG size of output: 686 [2020-10-12 13:19:03,614 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 48